DATABASE RESOURCES PRICING ABOUT US

{"id": "APPLE:B42E67860AD9D9F5B9307A29A1189DF0", "vendorId": null, "type": "apple", "bulletinFamily": "software", "title": "About the security content of macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave", "description": "# About the security content of macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave\n\nThis document describes the security content of macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave.\n\n## About Apple security updates\n\nFor our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the [Apple security updates](<https://support.apple.com/kb/HT201222>) page.\n\nApple security documents reference vulnerabilities by [CVE-ID](<http://cve.mitre.org/about/>) when possible.\n\nFor more information about security, see the [Apple Product Security](<https://support.apple.com/kb/HT201220>) page.\n\n\n\n## macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave\n\nReleased February 1, 2021\n\n**Analytics**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1761: Cees Elzinga\n\n**APFS**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A local user may be able to read arbitrary files\n\nDescription: The issue was addressed with improved permissions logic.\n\nCVE-2021-1797: Thomas Tempelmann\n\n**CFNetwork Cache**\n\nAvailable for: macOS Catalina 10.15.7 and macOS Mojave 10.14.6\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: An integer overflow was addressed with improved input validation.\n\nCVE-2020-27945: Zhuo Liang of Qihoo 360 Vulcan Team\n\n**CoreAnimation**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A malicious application could execute arbitrary code leading to compromise of user information\n\nDescription: A memory corruption issue was addressed with improved state management.\n\nCVE-2021-1760: @S0rryMybad of 360 Vulcan Team\n\n**CoreAudio**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing maliciously crafted web content may lead to code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1747: JunDong Xie of Ant Security Light-Year Lab\n\n**CoreGraphics**\n\nAvailable for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted font file may lead to arbitrary code execution\n\nDescription: An out-of-bounds write issue was addressed with improved bounds checking.\n\nCVE-2021-1776: Ivan Fratric of Google Project Zero\n\nEntry updated March 16, 2021\n\n**CoreMedia**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1759: Hou JingYi (@hjy79425575) of Qihoo 360 CERT\n\n**CoreText**\n\nAvailable for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted text file may lead to arbitrary code execution\n\nDescription: A stack overflow was addressed with improved input validation.\n\nCVE-2021-1772: Mickey Jin (@patch1t) of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry updated March 16, 2021\n\n**CoreText**\n\nAvailable for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS Big Sur 11.0.1\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1792: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry updated March 16, 2021\n\n**Crash Reporter**\n\nAvailable for: macOS Catalina 10.15.7\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1761: Cees Elzinga\n\n**Crash Reporter**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1787: James Hutchins\n\n**Crash Reporter**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: A local user may be able to create or modify system files\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1786: Csaba Fitzl (@theevilbit) of Offensive Security\n\n**Directory Utility**\n\nAvailable for: macOS Catalina 10.15.7\n\nImpact: A malicious application may be able to access private information\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2020-27937: Wojciech Regu\u0142a (@_r3ggi) of SecuRing\n\n**Endpoint Security**\n\nAvailable for: macOS Catalina 10.15.7\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1802: Zhongcheng Li (@CK01) of WPS Security Response Center\n\n**FairPlay**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A malicious application may be able to disclose kernel memory\n\nDescription: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation.\n\nCVE-2021-1791: Junzhi Lu (@pwn0rz), Qi Sun &amp; Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\n**FontParser**\n\nAvailable for: macOS Catalina 10.15.7\n\nImpact: Processing a maliciously crafted font may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1790: Peter Nguyen Vu Hoang of STAR Labs\n\n**FontParser**\n\nAvailable for: macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted font may lead to arbitrary code execution\n\nDescription: This issue was addressed by removing the vulnerable code.\n\nCVE-2021-1775: Mickey Jin and Qi Sun of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry updated March 16, 2021\n\n**FontParser**\n\nAvailable for: macOS Mojave 10.14.6\n\nImpact: A remote attacker may be able to leak memory\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2020-29608: Xingwei Lin of Ant Security Light-Year Lab\n\n**FontParser**\n\nAvailable for: macOS Big Sur 11.0.1 and macOS Catalina 10.15.7\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1758: Peter Nguyen of STAR Labs\n\n**ImageIO**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An access issue was addressed with improved memory management.\n\nCVE-2021-1783: Xingwei Lin of Ant Security Light-Year Lab\n\n**ImageIO**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1741: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1743: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative, Xingwei Lin of Ant Security Light-Year Lab\n\n** \nImageIO**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1773: Xingwei Lin of Ant Security Light-Year Lab\n\n**ImageIO**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: An out-of-bounds read issue existed in the curl. This issue was addressed with improved bounds checking.\n\nCVE-2021-1778: Xingwei Lin of Ant Security Light-Year Lab\n\n**ImageIO**\n\nAvailable for: macOS Catalina 10.15.7, macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1736: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1785: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry updated March 16, 2021\n\n**ImageIO**\n\nAvailable for: macOS Mojave 10.14.6, macOS Catalina 10.15.7, macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1766: Danny Rosseau of Carve Systems\n\nEntry updated March 16, 2021\n\n**ImageIO**\n\nAvailable for: macOS Catalina 10.15.7, macOS Big Sur 11.0.1\n\nImpact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1818: Xingwei Lin of Ant-Financial Light-Year Security Lab\n\nEntry updated March 16, 2021\n\n**ImageIO**\n\nAvailable for: macOS Catalina 10.15.7, macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1742: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1746: Jeonghoon Shin(@singi21a) of THEORI, Mickey Jin &amp; Qi Sun of Trend Micro working with Trend Micro\u2019s Zero Day Initiative, Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1754: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1774: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1777: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1793: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry updated March 16, 2021\n\n**ImageIO**\n\nAvailable for: macOS Big Sur 11.0.1 and macOS Catalina 10.15.7\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1737: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1738: Lei Sun\n\nCVE-2021-1744: Xingwei Lin of Ant Security Light-Year Lab\n\n**IOKit**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: An application may be able to execute arbitrary code with system privileges\n\nDescription: A logic error in kext loading was addressed with improved state handling.\n\nCVE-2021-1779: Csaba Fitzl (@theevilbit) of Offensive Security\n\n**IOSkywalkFamily**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1757: Pan ZhenPeng (@Peterpan0927) of Alibaba Security, Proteas\n\n**Kernel**\n\nAvailable for: macOS Catalina 10.15.7 and macOS Mojave 10.14.6\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: A logic issue existed resulting in memory corruption. This was addressed with improved state management.\n\nCVE-2020-27904: Zuozhi Fan (@pattern_F_) of Ant Group Tianqiong Security Lab\n\n**Kernel**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1764: @m00nbsd\n\n**Kernel**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: A malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited.\n\nDescription: A race condition was addressed with improved locking.\n\nCVE-2021-1782: an anonymous researcher\n\n**Kernel**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1750: @0xalsr\n\n**Login Window**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: An attacker in a privileged network position may be able to bypass authentication policy\n\nDescription: An authentication issue was addressed with improved state management.\n\nCVE-2020-29633: Jewel Lambert of Original Spin, LLC.\n\n**Messages**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A malicious application may be able to leak sensitive user information\n\nDescription: A privacy issue existed in the handling of Contact cards. This was addressed with improved state management.\n\nCVE-2021-1781: Csaba Fitzl (@theevilbit) of Offensive Security\n\nEntry added March 16, 2021\n\n**Messages**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: A user that is removed from an iMessage group could rejoin the group\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1771: Shreyas Ranganatha (@strawsnoceans)\n\n**Model I/O**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1762: Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry updated March 16, 2021\n\n**Model I/O**\n\nAvailable for: macOS Catalina 10.15.7\n\nImpact: Processing a maliciously crafted file may lead to heap corruption\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2020-29614: ZhiWei Sun (@5n1p3r0010) of Topsec Alpha Lab\n\n**Model I/O**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: A buffer overflow was addressed with improved bounds checking.\n\nCVE-2021-1763: Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\n**Model I/O**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted image may lead to heap corruption\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1767: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\n**Model I/O**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1745: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\n**Model I/O**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1753: Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\n**Model I/O**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1768: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\n**NetFSFramework**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Mounting a maliciously crafted Samba network share may lead to arbitrary code execution\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1751: Mikko Kentt\u00e4l\u00e4 (@Turmio_) of SensorFu\n\n**OpenLDAP**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2020-25709\n\n**Power Management**\n\nAvailable for: macOS Mojave 10.14.6, macOS Catalina 10.15.7\n\nImpact: A malicious application may be able to elevate privileges\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2020-27938: Tim Michaud (@TimGMichaud) of Leviathan\n\n**Screen Sharing**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Multiple issues in pcre\n\nDescription: Multiple issues were addressed by updating to version 8.44.\n\nCVE-2019-20838\n\nCVE-2020-14155\n\n**SQLite**\n\nAvailable for: macOS Catalina 10.15.7\n\nImpact: Multiple issues in SQLite\n\nDescription: Multiple issues were addressed with improved checks.\n\nCVE-2020-15358\n\n**Swift**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A malicious attacker with arbitrary read and write capability may be able to bypass Pointer Authentication\n\nDescription: A logic issue was addressed with improved validation.\n\nCVE-2021-1769: CodeColorist of Ant-Financial Light-Year Labs\n\n**WebKit**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1788: Francisco Alonso (@revskills)\n\n**WebKit**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Maliciously crafted web content may violate iframe sandboxing policy\n\nDescription: This issue was addressed with improved iframe sandbox enforcement.\n\nCVE-2021-1765: Eliya Stein of Confiant\n\nCVE-2021-1801: Eliya Stein of Confiant\n\n**WebKit**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A type confusion issue was addressed with improved state handling.\n\nCVE-2021-1789: @S0rryMybad of 360 Vulcan Team\n\n**WebKit**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.\n\nDescription: A logic issue was addressed with improved restrictions.\n\nCVE-2021-1871: an anonymous researcher\n\nCVE-2021-1870: an anonymous researcher\n\n**WebRTC**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A malicious website may be able to access restricted ports on arbitrary servers\n\nDescription: A port redirection issue was addressed with additional port validation.\n\nCVE-2021-1799: Gregory Vishnepolsky &amp; Ben Seri of Armis Security, and Samy Kamkar\n\n**XNU**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A malicious application may be able to execute arbitrary code with kernel privileges\n\nDescription: A type confusion issue was addressed with improved state handling.\n\nCVE-2021-30869: Apple\n\nEntry added September 23, 2021\n\n\n\n## Additional recognition\n\n**Kernel**\n\nWe would like to acknowledge Junzhi Lu (@pwn0rz), Mickey Jin &amp; Jesse Change of Trend Micro for their assistance.\n\n**libpthread**\n\nWe would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.\n\n**Login Window**\n\nWe would like to acknowledge Jose Moises Romero-Villanueva of CrySolve for their assistance.\n\n**Mail Drafts**\n\nWe would like to acknowledge Jon Bottarini of HackerOne for their assistance.\n\n**Screen Sharing Server**\n\nWe would like to acknowledge @gorelics for their assistance.\n\n**WebRTC**\n\nWe would like to acknowledge Philipp Hancke for their assistance.\n\nInformation about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. [Contact the vendor](<http://support.apple.com/kb/HT2693>) for additional information.\n\nPublished Date: September 23, 2021\n", "published": "2021-02-01T00:00:00", "modified": "2021-02-01T00:00:00", "epss": [{"cve": "CVE-2019-20838", "epss": 0.00744, "percentile": 0.78269, "modified": "2023-06-06"}, {"cve": "CVE-2020-14155", "epss": 0.00462, "percentile": 0.71817, "modified": "2023-06-06"}, {"cve": "CVE-2020-15358", "epss": 0.00078, "percentile": 0.32289, "modified": "2023-06-06"}, {"cve": "CVE-2020-25709", "epss": 0.00383, "percentile": 0.69129, "modified": "2023-06-06"}, {"cve": "CVE-2020-27904", "epss": 0.00071, "percentile": 0.29152, "modified": "2023-06-06"}, {"cve": "CVE-2020-27937", "epss": 0.00061, "percentile": 0.2406, "modified": "2023-06-06"}, {"cve": "CVE-2020-27938", "epss": 0.00065, "percentile": 0.2681, "modified": "2023-06-06"}, {"cve": "CVE-2020-27945", "epss": 0.00077, "percentile": 0.3146, "modified": "2023-06-06"}, {"cve": "CVE-2020-29608", "epss": 0.00087, "percentile": 0.35883, "modified": "2023-06-06"}, {"cve": "CVE-2020-29614", "epss": 0.00076, "percentile": 0.30889, "modified": "2023-06-06"}, {"cve": "CVE-2020-29633", "epss": 0.00191, "percentile": 0.55359, "modified": "2023-06-06"}, {"cve": "CVE-2021-1736", "epss": 0.00065, "percentile": 0.26669, "modified": "2023-05-27"}, {"cve": "CVE-2021-1737", "epss": 0.0008, "percentile": 0.32894, "modified": "2023-05-27"}, {"cve": "CVE-2021-1738", "epss": 0.00076, "percentile": 0.3091, "modified": "2023-05-27"}, {"cve": "CVE-2021-1741", "epss": 0.00082, "percentile": 0.3374, "modified": "2023-05-27"}, {"cve": "CVE-2021-1742", "epss": 0.00074, "percentile": 0.30316, "modified": "2023-05-27"}, {"cve": "CVE-2021-1743", "epss": 0.00089, "percentile": 0.36671, "modified": "2023-05-27"}, {"cve": "CVE-2021-1744", "epss": 0.00082, "percentile": 0.3374, "modified": "2023-05-27"}, {"cve": "CVE-2021-1745", "epss": 0.00081, "percentile": 0.33208, "modified": "2023-05-27"}, {"cve": "CVE-2021-1746", "epss": 0.00081, "percentile": 0.33253, "modified": "2023-05-27"}, {"cve": "CVE-2021-1747", "epss": 0.00082, "percentile": 0.3374, "modified": "2023-05-27"}, {"cve": "CVE-2021-1750", "epss": 0.00071, "percentile": 0.29119, "modified": "2023-05-27"}, {"cve": "CVE-2021-1751", "epss": 0.00042, "percentile": 0.05679, "modified": "2023-05-27"}, {"cve": "CVE-2021-1753", "epss": 0.00081, "percentile": 0.33208, "modified": "2023-05-27"}, {"cve": "CVE-2021-1754", "epss": 0.00074, "percentile": 0.30316, "modified": "2023-05-27"}, {"cve": "CVE-2021-1757", "epss": 0.00042, "percentile": 0.05679, "modified": "2023-05-27"}, {"cve": "CVE-2021-1758", "epss": 0.00221, "percentile": 0.58913, "modified": "2023-05-27"}, {"cve": "CVE-2021-1759", "epss": 0.00086, "percentile": 0.35115, "modified": "2023-05-27"}, {"cve": "CVE-2021-1760", "epss": 0.00065, "percentile": 0.26674, "modified": "2023-05-27"}, {"cve": "CVE-2021-1761", "epss": 0.00397, "percentile": 0.69658, "modified": "2023-05-27"}, {"cve": "CVE-2021-1762", "epss": 0.0008, "percentile": 0.32894, "modified": "2023-05-27"}, {"cve": "CVE-2021-1763", "epss": 0.00081, "percentile": 0.33208, "modified": "2023-05-27"}, {"cve": "CVE-2021-1764", "epss": 0.00437, "percentile": 0.7101, "modified": "2023-05-27"}, {"cve": "CVE-2021-1765", "epss": 0.00093, "percentile": 0.38281, "modified": "2023-05-27"}, {"cve": "CVE-2021-1766", "epss": 0.0006, "percentile": 0.23309, "modified": "2023-05-27"}, {"cve": "CVE-2021-1767", "epss": 0.00065, "percentile": 0.26875, "modified": "2023-05-27"}, {"cve": "CVE-2021-1768", "epss": 0.00081, "percentile": 0.33208, "modified": "2023-05-27"}, {"cve": "CVE-2021-1769", "epss": 0.00045, "percentile": 0.12529, "modified": "2023-05-27"}, {"cve": "CVE-2021-1771", "epss": 0.0005, "percentile": 0.17435, "modified": "2023-05-27"}, {"cve": "CVE-2021-1772", "epss": 0.00074, "percentile": 0.30384, "modified": "2023-05-27"}, {"cve": "CVE-2021-1773", "epss": 0.00058, "percentile": 0.21832, "modified": "2023-05-27"}, {"cve": "CVE-2021-1774", "epss": 0.00074, "percentile": 0.30316, "modified": "2023-05-27"}, {"cve": "CVE-2021-1775", "epss": 0.00068, "percentile": 0.28085, "modified": "2023-05-27"}, {"cve": "CVE-2021-1776", "epss": 0.00082, "percentile": 0.3374, "modified": "2023-05-27"}, {"cve": "CVE-2021-1777", "epss": 0.00074, "percentile": 0.30316, "modified": "2023-05-27"}, {"cve": "CVE-2021-1778", "epss": 0.00067, "percentile": 0.2746, "modified": "2023-05-27"}, {"cve": "CVE-2021-1779", "epss": 0.00061, "percentile": 0.23757, "modified": "2023-05-27"}, {"cve": "CVE-2021-1781", "epss": 0.00064, "percentile": 0.26181, "modified": "2023-05-27"}, {"cve": "CVE-2021-1782", "epss": 0.00097, "percentile": 0.3946, "modified": "2023-05-27"}, {"cve": "CVE-2021-1783", "epss": 0.00074, "percentile": 0.30316, "modified": "2023-05-27"}, {"cve": "CVE-2021-1785", "epss": 0.00082, "percentile": 0.3374, "modified": "2023-05-27"}, {"cve": "CVE-2021-1786", "epss": 0.00042, "percentile": 0.05679, "modified": "2023-05-27"}, {"cve": "CVE-2021-1787", "epss": 0.00042, "percentile": 0.05679, "modified": "2023-05-27"}, {"cve": "CVE-2021-1788", "epss": 0.00197, "percentile": 0.56209, "modified": "2023-05-27"}, {"cve": "CVE-2021-1789", "epss": 0.00483, "percentile": 0.72431, "modified": "2023-05-27"}, {"cve": "CVE-2021-1790", "epss": 0.00065, "percentile": 0.26669, "modified": "2023-05-27"}, {"cve": "CVE-2021-1791", "epss": 0.00068, "percentile": 0.27723, "modified": "2023-05-27"}, {"cve": "CVE-2021-1792", "epss": 0.01221, "percentile": 0.83331, "modified": "2023-05-27"}, {"cve": "CVE-2021-1793", "epss": 0.00074, "percentile": 0.30316, "modified": "2023-05-27"}, {"cve": "CVE-2021-1797", "epss": 0.00042, "percentile": 0.05679, "modified": "2023-05-27"}, {"cve": "CVE-2021-1799", "epss": 0.00202, "percentile": 0.56718, "modified": "2023-05-27"}, {"cve": "CVE-2021-1801", "epss": 0.00175, "percentile": 0.53226, "modified": "2023-05-27"}, {"cve": "CVE-2021-1802", "epss": 0.00042, "percentile": 0.05679, "modified": "2023-05-27"}, {"cve": "CVE-2021-1818", "epss": 0.00465, "percentile": 0.71839, "modified": "2023-05-27"}, {"cve": "CVE-2021-1870", "epss": 0.00541, "percentile": 0.74006, "modified": "2023-05-27"}, {"cve": "CVE-2021-1871", "epss": 0.00316, "percentile": 0.65961, "modified": "2023-05-27"}, {"cve": "CVE-2021-30869", "epss": 0.00089, "percentile": 0.36563, "modified": "2023-05-27"}], "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}, "cvss2": {"cvssV2": {"version": "2.0", "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "accessVector": "NETWORK", "accessComplexity": "MEDIUM", "authentication": "NONE", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "baseScore": 9.3}, "severity": "HIGH", "exploitabilityScore": 8.6, "impactScore": 10.0, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}, "cvss3": {"cvssV3": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL"}, "exploitabilityScore": 3.9, "impactScore": 5.9}, "href": "https://support.apple.com/kb/HT212147", "reporter": "Apple", "references": ["https://support.apple.com/en-us/HT201222"], "cvelist": ["CVE-2019-20838", "CVE-2020-14155", "CVE-2020-15358", "CVE-2020-25709", "CVE-2020-27904", "CVE-2020-27937", "CVE-2020-27938", "CVE-2020-27945", "CVE-2020-29608", "CVE-2020-29614", "CVE-2020-29633", "CVE-2021-1736", "CVE-2021-1737", "CVE-2021-1738", "CVE-2021-1741", "CVE-2021-1742", "CVE-2021-1743", "CVE-2021-1744", "CVE-2021-1745", "CVE-2021-1746", "CVE-2021-1747", "CVE-2021-1750", "CVE-2021-1751", "CVE-2021-1753", "CVE-2021-1754", "CVE-2021-1757", "CVE-2021-1758", "CVE-2021-1759", "CVE-2021-1760", "CVE-2021-1761", "CVE-2021-1762", "CVE-2021-1763", "CVE-2021-1764", "CVE-2021-1765", "CVE-2021-1766", "CVE-2021-1767", "CVE-2021-1768", "CVE-2021-1769", "CVE-2021-1771", "CVE-2021-1772", "CVE-2021-1773", "CVE-2021-1774", "CVE-2021-1775", "CVE-2021-1776", "CVE-2021-1777", "CVE-2021-1778", "CVE-2021-1779", "CVE-2021-1781", "CVE-2021-1782", "CVE-2021-1783", "CVE-2021-1785", "CVE-2021-1786", "CVE-2021-1787", "CVE-2021-1788", "CVE-2021-1789", "CVE-2021-1790", "CVE-2021-1791", "CVE-2021-1792", "CVE-2021-1793", "CVE-2021-1797", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1802", "CVE-2021-1818", "CVE-2021-1870", "CVE-2021-1871", "CVE-2021-30869"], "immutableFields": [], "lastseen": "2023-06-06T22:03:02", "viewCount": 10, "enchantments": {"affected_software": {"major_version": [{"name": "macos big sur", "version": 11}, {"name": "macos catalina", "version": 10}, {"name": "and macos mojave", "version": 10}]}, "affected_software_major_version": [{"name": "macos big sur", "version": 11}, {"name": "macos catalina", "version": 10}, {"name": "and macos mojave", "version": 10}], "dependencies": {"references": [{"type": "almalinux", "idList": ["ALSA-2021:1581", "ALSA-2021:4373", "ALSA-2021:4381"]}, {"type": "alpinelinux", "idList": ["ALPINE:CVE-2020-14155", "ALPINE:CVE-2020-15358", "ALPINE:CVE-2020-25709", "ALPINE:CVE-2021-1765", "ALPINE:CVE-2021-1788", "ALPINE:CVE-2021-1789", "ALPINE:CVE-2021-1799", "ALPINE:CVE-2021-1801", "ALPINE:CVE-2021-1870", "ALPINE:CVE-2021-1871"]}, {"type": "amazon", "idList": ["ALAS2-2022-1770"]}, {"type": "apple", "idList": ["APPLE:1497A45CB0DAAC2F9E2072CB335CDF69", "APPLE:2CFF37D24AF31A8E2676CA31BB144D00", "APPLE:341D114D330F307514C2721DBB8BFACA", "APPLE:47A6F4E1660238E39625B31A34F6CDF1", "APPLE:69486846F4E103257D8EDC36AB4251D2", "APPLE:914AF8F52D4AB5DC92631271089CEE87", "APPLE:9AAA600C4496E1F352EC9F07A8BDC39B", "APPLE:B69E745380EF6BD25EB61E697869CC84", "APPLE:BA98C8C16843FE168383A913EC4AD2F4", 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"checkpoint_advisories", "idList": ["CPAI-2021-1175"]}, {"type": "chrome", "idList": ["GCSA-2509954079155194578"]}, {"type": "cisa_kev", "idList": ["CISA-KEV-CVE-2021-1782", "CISA-KEV-CVE-2021-1789", "CISA-KEV-CVE-2021-1870", "CISA-KEV-CVE-2021-1871", "CISA-KEV-CVE-2021-30869"]}, {"type": "cloudfoundry", "idList": ["CFOUNDRY:C51D5E136965C2018AA261ADFD5CD91D"]}, {"type": "cve", "idList": ["CVE-2019-20838", "CVE-2020-14155", "CVE-2020-15358", "CVE-2020-25709", "CVE-2020-27904", "CVE-2020-27937", "CVE-2020-27938", "CVE-2020-27945", "CVE-2020-29608", "CVE-2020-29614", "CVE-2020-29633", "CVE-2021-1736", "CVE-2021-1737", "CVE-2021-1738", "CVE-2021-1741", "CVE-2021-1742", "CVE-2021-1743", "CVE-2021-1744", "CVE-2021-1745", "CVE-2021-1746", "CVE-2021-1747", "CVE-2021-1750", "CVE-2021-1751", "CVE-2021-1753", "CVE-2021-1754", "CVE-2021-1757", "CVE-2021-1758", "CVE-2021-1759", "CVE-2021-1760", "CVE-2021-1761", "CVE-2021-1762", "CVE-2021-1763", "CVE-2021-1764", "CVE-2021-1765", "CVE-2021-1766", "CVE-2021-1767", "CVE-2021-1768", "CVE-2021-1769", "CVE-2021-1771", "CVE-2021-1772", "CVE-2021-1773", "CVE-2021-1774", "CVE-2021-1775", "CVE-2021-1776", "CVE-2021-1777", "CVE-2021-1778", "CVE-2021-1779", "CVE-2021-1781", "CVE-2021-1782", "CVE-2021-1783", "CVE-2021-1785", "CVE-2021-1786", "CVE-2021-1787", "CVE-2021-1788", "CVE-2021-1789", "CVE-2021-1790", "CVE-2021-1791", "CVE-2021-1792", "CVE-2021-1793", "CVE-2021-1797", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1802", "CVE-2021-1818", "CVE-2021-1870", "CVE-2021-1871", "CVE-2021-30869"]}, {"type": "debian", "idList": ["DEBIAN:DLA-2481-1:F1C1C", "DEBIAN:DSA-4792-1:3A5B5", "DEBIAN:DSA-4792-1:9EED2", "DEBIAN:DSA-4877-1:61845", "DEBIAN:DSA-4877-1:95C13", "DEBIAN:DSA-4923-1:EA1C3"]}, {"type": "debiancve", "idList": ["DEBIANCVE:CVE-2019-20838", "DEBIANCVE:CVE-2020-14155", "DEBIANCVE:CVE-2020-15358", "DEBIANCVE:CVE-2020-25709", "DEBIANCVE:CVE-2021-1765", "DEBIANCVE:CVE-2021-1788", "DEBIANCVE:CVE-2021-1789", "DEBIANCVE:CVE-2021-1799", 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"RHSA-2021:5137", "RHSA-2022:0056", "RHSA-2022:0202", "RHSA-2022:0318", "RHSA-2022:0434", "RHSA-2022:0580", "RHSA-2022:0621", "RHSA-2022:0842", "RHSA-2022:0856", "RHSA-2022:1039", "RHSA-2022:1042", "RHSA-2022:1081", "RHSA-2022:1396", "RHSA-2022:5069", "RHSA-2022:5070", "RHSA-2022:5840", "RHSA-2022:5924", "RHSA-2022:6429", "RHSA-2022:6526"]}, {"type": "redhatcve", "idList": ["RH:CVE-2019-20838", "RH:CVE-2020-14155", "RH:CVE-2020-15358", "RH:CVE-2020-25709", "RH:CVE-2021-1765", "RH:CVE-2021-1788", "RH:CVE-2021-1789", "RH:CVE-2021-1799", "RH:CVE-2021-1801", "RH:CVE-2021-1870", "RH:CVE-2021-1871"]}, {"type": "rocky", "idList": ["RLSA-2021:1581", "RLSA-2021:4373", "RLSA-2021:4381"]}, {"type": "rosalinux", "idList": ["ROSA-SA-2021-1975"]}, {"type": "sqlite", "idList": ["SQLT:CVE-2020-15358"]}, {"type": "suse", "idList": ["OPENSUSE-SU-2021:0102-1", "OPENSUSE-SU-2021:0107-1", "OPENSUSE-SU-2021:0637-1", "OPENSUSE-SU-2021:1058-1", "OPENSUSE-SU-2021:1441-1", "OPENSUSE-SU-2021:2320-1", "OPENSUSE-SU-2021:3529-1", "OPENSUSE-SU-2022:0182-1", "OPENSUSE-SU-2022:0182-2"]}, {"type": "thn", "idList": ["THN:012D6A298BED906B54D36D175756D4A7", "THN:080F85D43290560CDED8F282EE277B00", "THN:0D13405795D42B516C33D8E56A44BA9D", "THN:2741F0E9DD9F764C60701C9C81F231C5", "THN:3F527FB34758F461CB88126624C0A51D", "THN:4376782A3F009FEED68FDD2022A11EF5", "THN:4EFE9C3A3A0DEB0019296A14C9EAC1FA", "THN:59DC40FBDFBEBE12E11B551510E4B2E6", "THN:6A9CD6F085628D08978727C0FF597535", "THN:6D9C30F48BF06002190A9401A9E9AFC8", "THN:739D9EFE8C7F1B29E2430DAC65CDEE52", "THN:87650195BF482879C3C258B474B11411", "THN:99F0C5326CD3398017C19279EE84B66E", "THN:BB8CDCFD08801BDD2929E342853D03E9", "THN:C81BD176DFB6F0D878C30EC98291E803"]}, {"type": "threatpost", "idList": ["THREATPOST:1A88FF1D2951B8467D062697D5D05CFA", "THREATPOST:233067E74345C95478CA096160DFCE43", "THREATPOST:26C336F10C4AB0FEC01844CA1040746F", "THREATPOST:33E56DEB736406F9DD08C7533BF1812B", "THREATPOST:4EC160EC2EBC650C54F5047502D0F7A4", "THREATPOST:8372A3E62BAD4992E997A34240A7EB45", "THREATPOST:903E3AE69515CA2F78F2D16CDEB05861", "THREATPOST:E13609652D43E0698E1BBCD2FE20E670"]}, {"type": "ubuntu", "idList": ["USN-4438-1", "USN-4634-1", "USN-4634-2", "USN-4894-1", "USN-4939-1", "USN-5425-1"]}, {"type": "ubuntucve", "idList": ["UB:CVE-2019-20838", "UB:CVE-2020-14155", "UB:CVE-2020-15358", "UB:CVE-2020-25709", "UB:CVE-2021-1765", "UB:CVE-2021-1788", "UB:CVE-2021-1789", "UB:CVE-2021-1799", "UB:CVE-2021-1801", "UB:CVE-2021-1870", "UB:CVE-2021-1871"]}, {"type": "veracode", "idList": ["VERACODE:28548", "VERACODE:28550", "VERACODE:29857", "VERACODE:29859", "VERACODE:29860", "VERACODE:29861", "VERACODE:29862", "VERACODE:29886", "VERACODE:29888", "VERACODE:30556", "VERACODE:32922"]}, {"type": "zdi", "idList": ["ZDI-21-138", "ZDI-21-139", "ZDI-21-141", "ZDI-21-142", "ZDI-21-143", "ZDI-21-144", "ZDI-21-145", "ZDI-21-146", "ZDI-21-147", "ZDI-21-148", "ZDI-21-149", "ZDI-21-193", "ZDI-21-251", "ZDI-21-758"]}]}, "score": {"value": 9.3, "vector": "NONE"}, "epss": [{"cve": "CVE-2019-20838", "epss": 0.00744, "percentile": 0.78204, "modified": "2023-05-01"}, {"cve": "CVE-2020-14155", "epss": 0.00275, "percentile": 0.63293, "modified": "2023-05-01"}, {"cve": "CVE-2020-15358", "epss": 0.00078, "percentile": 0.32192, "modified": "2023-05-01"}, {"cve": "CVE-2020-25709", "epss": 0.00383, "percentile": 0.68982, "modified": "2023-05-01"}, {"cve": "CVE-2020-27904", "epss": 0.00071, "percentile": 0.29046, "modified": "2023-05-01"}, {"cve": "CVE-2020-27937", "epss": 0.00061, "percentile": 0.23971, "modified": "2023-05-01"}, {"cve": "CVE-2020-27938", "epss": 0.00065, "percentile": 0.2671, "modified": "2023-05-01"}, {"cve": "CVE-2020-27945", "epss": 0.00077, "percentile": 0.31357, "modified": "2023-05-01"}, {"cve": "CVE-2020-29608", "epss": 0.00087, "percentile": 0.35776, "modified": "2023-05-01"}, {"cve": "CVE-2020-29614", "epss": 0.00076, "percentile": 0.30786, "modified": "2023-05-01"}, {"cve": "CVE-2020-29633", "epss": 0.00191, "percentile": 0.5518, "modified": "2023-05-01"}, {"cve": "CVE-2021-1736", "epss": 0.00065, "percentile": 0.26588, "modified": "2023-05-01"}, {"cve": "CVE-2021-1737", "epss": 0.0008, "percentile": 0.32802, "modified": "2023-05-01"}, {"cve": "CVE-2021-1738", "epss": 0.00076, "percentile": 0.30834, "modified": "2023-05-01"}, {"cve": "CVE-2021-1741", "epss": 0.00082, "percentile": 0.33663, "modified": "2023-05-01"}, {"cve": "CVE-2021-1742", "epss": 0.00074, "percentile": 0.30242, "modified": "2023-05-01"}, {"cve": "CVE-2021-1743", "epss": 0.00089, "percentile": 0.36568, "modified": "2023-05-01"}, {"cve": "CVE-2021-1744", "epss": 0.00082, "percentile": 0.33663, "modified": "2023-05-01"}, {"cve": "CVE-2021-1745", "epss": 0.00081, "percentile": 0.33105, "modified": "2023-05-01"}, {"cve": "CVE-2021-1746", "epss": 0.00081, "percentile": 0.33148, "modified": "2023-05-01"}, {"cve": "CVE-2021-1747", "epss": 0.00082, "percentile": 0.33663, "modified": "2023-05-01"}, {"cve": "CVE-2021-1750", "epss": 0.00071, "percentile": 0.29046, "modified": "2023-05-01"}, {"cve": "CVE-2021-1751", "epss": 0.00042, "percentile": 0.05657, "modified": "2023-05-01"}, {"cve": "CVE-2021-1753", "epss": 0.00081, "percentile": 0.33105, "modified": "2023-05-01"}, {"cve": "CVE-2021-1754", "epss": 0.00074, "percentile": 0.30242, "modified": "2023-05-01"}, {"cve": "CVE-2021-1757", "epss": 0.00042, "percentile": 0.05657, "modified": "2023-05-01"}, {"cve": "CVE-2021-1758", "epss": 0.00221, "percentile": 0.58775, "modified": "2023-05-01"}, {"cve": "CVE-2021-1759", "epss": 0.00086, "percentile": 0.3505, "modified": "2023-05-01"}, {"cve": "CVE-2021-1760", "epss": 0.00065, "percentile": 0.26591, "modified": "2023-05-01"}, {"cve": "CVE-2021-1761", "epss": 0.00397, "percentile": 0.69558, "modified": "2023-05-01"}, {"cve": "CVE-2021-1762", "epss": 0.0008, "percentile": 0.32802, "modified": "2023-05-01"}, {"cve": "CVE-2021-1763", "epss": 0.00081, "percentile": 0.33105, "modified": "2023-05-01"}, {"cve": "CVE-2021-1764", "epss": 0.00437, "percentile": 0.7094, "modified": "2023-05-01"}, {"cve": "CVE-2021-1765", "epss": 0.00093, "percentile": 0.38161, "modified": "2023-05-01"}, {"cve": "CVE-2021-1766", "epss": 0.0006, "percentile": 0.23247, "modified": "2023-05-01"}, {"cve": "CVE-2021-1767", "epss": 0.00065, "percentile": 0.26802, "modified": "2023-05-01"}, {"cve": "CVE-2021-1768", "epss": 0.00081, "percentile": 0.33105, "modified": "2023-05-01"}, {"cve": "CVE-2021-1769", "epss": 0.00045, "percentile": 0.12518, "modified": "2023-05-01"}, {"cve": "CVE-2021-1771", "epss": 0.0005, "percentile": 0.17469, "modified": "2023-05-01"}, {"cve": "CVE-2021-1772", "epss": 0.00074, "percentile": 0.30305, "modified": "2023-05-01"}, {"cve": "CVE-2021-1773", "epss": 0.00058, "percentile": 0.21792, "modified": "2023-05-01"}, {"cve": "CVE-2021-1774", "epss": 0.00074, "percentile": 0.30242, "modified": "2023-05-01"}, {"cve": "CVE-2021-1775", "epss": 0.00068, "percentile": 0.28002, "modified": "2023-05-01"}, {"cve": "CVE-2021-1776", "epss": 0.00082, "percentile": 0.33663, "modified": "2023-05-01"}, {"cve": "CVE-2021-1777", "epss": 0.00074, "percentile": 0.30242, "modified": "2023-05-01"}, {"cve": "CVE-2021-1778", "epss": 0.00067, "percentile": 0.27372, "modified": "2023-05-01"}, {"cve": "CVE-2021-1779", "epss": 0.00061, "percentile": 0.23712, "modified": "2023-05-01"}, {"cve": "CVE-2021-1781", "epss": 0.00064, "percentile": 0.26099, "modified": "2023-05-01"}, {"cve": "CVE-2021-1782", "epss": 0.00097, "percentile": 0.39334, "modified": "2023-05-01"}, {"cve": "CVE-2021-1783", "epss": 0.00074, "percentile": 0.30242, "modified": "2023-05-01"}, {"cve": "CVE-2021-1785", "epss": 0.00082, "percentile": 0.33663, "modified": "2023-05-01"}, {"cve": "CVE-2021-1786", "epss": 0.00042, "percentile": 0.05657, "modified": "2023-05-01"}, {"cve": "CVE-2021-1787", "epss": 0.00042, "percentile": 0.05657, "modified": "2023-05-01"}, {"cve": "CVE-2021-1788", "epss": 0.00197, "percentile": 0.56104, "modified": "2023-05-01"}, {"cve": "CVE-2021-1789", "epss": 0.00483, "percentile": 0.72367, "modified": "2023-05-01"}, {"cve": "CVE-2021-1790", "epss": 0.00065, "percentile": 0.26588, "modified": "2023-05-01"}, {"cve": "CVE-2021-1791", "epss": 0.00068, "percentile": 0.27635, "modified": "2023-05-01"}, {"cve": "CVE-2021-1792", "epss": 0.01221, "percentile": 0.83277, "modified": "2023-05-01"}, {"cve": "CVE-2021-1793", "epss": 0.00074, "percentile": 0.30242, "modified": "2023-05-01"}, {"cve": "CVE-2021-1797", "epss": 0.00042, "percentile": 0.05657, "modified": "2023-05-01"}, {"cve": "CVE-2021-1799", "epss": 0.00202, "percentile": 0.56594, "modified": "2023-05-01"}, {"cve": "CVE-2021-1801", "epss": 0.00175, "percentile": 0.53084, "modified": "2023-05-01"}, {"cve": "CVE-2021-1802", "epss": 0.00042, "percentile": 0.05657, "modified": "2023-05-01"}, {"cve": "CVE-2021-1818", "epss": 0.00465, "percentile": 0.71764, "modified": "2023-05-01"}, {"cve": "CVE-2021-1870", "epss": 0.00541, "percentile": 0.73923, "modified": "2023-05-01"}, {"cve": "CVE-2021-1871", "epss": 0.00316, "percentile": 0.65866, "modified": "2023-05-01"}, {"cve": "CVE-2021-30869", "epss": 0.00089, "percentile": 0.36456, "modified": "2023-05-02"}], "vulnersScore": 9.3}, "_state": {"affected_software_major_version": 0, "dependencies": 1686087756, "score": 1686089033, "epss": 0}, "_internal": {"score_hash": "ba1c2876113272f4598eace05b434ed7"}, "affectedSoftware": [{"version": "11.0.1", "operator": "lt", "name": "macos big sur"}, {"version": "10.15.7", "operator": "lt", "name": "macos catalina"}, {"version": "10.14.6", "operator": "lt", "name": "and macos mojave"}]}

{"nessus": [{"lastseen": "2023-05-18T15:24:32", "description": "The remote host is running a version of macOS / Mac OS X that is 10.14.x prior to 10.14.6 Security Update 2021-001 Mojave, 10.15.x prior to 10.15.7 Security Update 2021-001 Catalina, or 11.x prior to 11.2. It is, therefore, affected by multiple vulnerabilities, including the following:\n\n - A logic issue existed resulting in memory corruption. This was addressed with improved state management.\n An application may be able to execute arbitrary code with kernel privileges. (CVE-2020-27904)\n\n - A logic issue existed that allowed applications to execute arbitrary code with kernel privileges.\n (CVE-2021-1750)\n\n - An out-of-bounds-write caused by improper input validation allowed maliciously crafted USD files to unexpectedly terminate an application or cause arbitrary code execution. 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Recent releases are listed on the [Apple security updates](<https://support.apple.com/kb/HT201222>) page.\n\nApple security documents reference vulnerabilities by [CVE-ID](<http://cve.mitre.org/about/>) when possible.\n\nFor more information about security, see the [Apple Product Security](<https://support.apple.com/kb/HT201220>) page.\n\n\n\n## macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave\n\nReleased February 1, 2021\n\n**Analytics**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1761: Cees Elzinga\n\n**APFS**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A local user may be able to read arbitrary files\n\nDescription: The issue was addressed with improved permissions logic.\n\nCVE-2021-1797: Thomas Tempelmann\n\n**CFNetwork Cache**\n\nAvailable for: macOS Catalina 10.15.7 and macOS Mojave 10.14.6\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: An integer overflow was addressed with improved input validation.\n\nCVE-2020-27945: Zhuo Liang of Qihoo 360 Vulcan Team\n\n**CoreAnimation**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A malicious application could execute arbitrary code leading to compromise of user information\n\nDescription: A memory corruption issue was addressed with improved state management.\n\nCVE-2021-1760: @S0rryMybad of 360 Vulcan Team\n\n**CoreAudio**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing maliciously crafted web content may lead to code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1747: JunDong Xie of Ant Security Light-Year Lab\n\n**CoreGraphics**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted font file may lead to arbitrary code execution\n\nDescription: An out-of-bounds write issue was addressed with improved bounds checking.\n\nCVE-2021-1776: Ivan Fratric of Google Project Zero\n\n**CoreMedia**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1759: Hou JingYi (@hjy79425575) of Qihoo 360 CERT\n\n**CoreText**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted text file may lead to arbitrary code execution\n\nDescription: A stack overflow was addressed with improved input validation.\n\nCVE-2021-1772: Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\n**CoreText**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1792: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\n**Crash Reporter**\n\nAvailable for: macOS Catalina 10.15.7\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1761: Cees Elzinga\n\n**Crash Reporter**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1787: James Hutchins\n\n**Crash Reporter**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: A local user may be able to create or modify system files\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1786: Csaba Fitzl (@theevilbit) of Offensive Security\n\n**Directory Utility**\n\nAvailable for: macOS Catalina 10.15.7\n\nImpact: A malicious application may be able to access private information\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2020-27937: Wojciech Regu\u0142a (@_r3ggi) of SecuRing\n\n**Endpoint Security**\n\nAvailable for: macOS Catalina 10.15.7\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1802: Zhongcheng Li (@CK01) from WPS Security Response Center\n\n**FairPlay**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A malicious application may be able to disclose kernel memory\n\nDescription: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation.\n\nCVE-2021-1791: Junzhi Lu (@pwn0rz), Qi Sun &amp; Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\n**FontParser**\n\nAvailable for: macOS Catalina 10.15.7\n\nImpact: Processing a maliciously crafted font may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1790: Peter Nguyen Vu Hoang of STAR Labs\n\n**FontParser**\n\nAvailable for: macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted font may lead to arbitrary code execution\n\nDescription: This issue was addressed by removing the vulnerable code.\n\nCVE-2021-1775: Mickey Jin and Qi Sun of Trend Micro\n\n**FontParser**\n\nAvailable for: macOS Mojave 10.14.6\n\nImpact: A remote attacker may be able to leak memory\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2020-29608: Xingwei Lin of Ant Security Light-Year Lab\n\n**FontParser**\n\nAvailable for: macOS Big Sur 11.0.1 and macOS Catalina 10.15.7\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1758: Peter Nguyen of STAR Labs\n\n**ImageIO**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An access issue was addressed with improved memory management.\n\nCVE-2021-1783: Xingwei Lin of Ant Security Light-Year Lab\n\n**ImageIO**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1741: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1743: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative, Xingwei Lin of Ant Security Light-Year Lab\n\n** \nImageIO**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1773: Xingwei Lin of Ant Security Light-Year Lab\n\n**ImageIO**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: An out-of-bounds read issue existed in the curl. This issue was addressed with improved bounds checking.\n\nCVE-2021-1778: Xingwei Lin of Ant Security Light-Year Lab\n\n**ImageIO**\n\nAvailable for: macOS Big Sur 11.0.1 and macOS Catalina 10.15.7\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1736: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1785: Xingwei Lin of Ant Security Light-Year Lab\n\n**ImageIO**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1766: Danny Rosseau of Carve Systems\n\n**ImageIO**\n\nAvailable for: macOS Big Sur 11.0.1 and macOS Catalina 10.15.7\n\nImpact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1818: Xingwei Lin from Ant-Financial Light-Year Security Lab\n\n**ImageIO**\n\nAvailable for: macOS Big Sur 11.0.1 and macOS Catalina 10.15.7\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1742: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1746: Mickey Jin &amp; Qi Sun of Trend Micro, Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1754: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1774: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1777: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1793: Xingwei Lin of Ant Security Light-Year Lab\n\n**ImageIO**\n\nAvailable for: macOS Big Sur 11.0.1 and macOS Catalina 10.15.7\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1737: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1738: Lei Sun\n\nCVE-2021-1744: Xingwei Lin of Ant Security Light-Year Lab\n\n**IOKit**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: An application may be able to execute arbitrary code with system privileges\n\nDescription: A logic error in kext loading was addressed with improved state handling.\n\nCVE-2021-1779: Csaba Fitzl (@theevilbit) of Offensive Security\n\n**IOSkywalkFamily**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1757: Pan ZhenPeng (@Peterpan0927) of Alibaba Security, Proteas\n\n**Kernel**\n\nAvailable for: macOS Catalina 10.15.7 and macOS Mojave 10.14.6\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: A logic issue existed resulting in memory corruption. This was addressed with improved state management.\n\nCVE-2020-27904: Zuozhi Fan (@pattern_F_) of Ant Group Tianqiong Security Lab\n\n**Kernel**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1764: @m00nbsd\n\n**Kernel**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: A malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited.\n\nDescription: A race condition was addressed with improved locking.\n\nCVE-2021-1782: an anonymous researcher\n\n**Kernel**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1750: @0xalsr\n\n**Login Window**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: An attacker in a privileged network position may be able to bypass authentication policy\n\nDescription: An authentication issue was addressed with improved state management.\n\nCVE-2020-29633: Jewel Lambert of Original Spin, LLC.\n\n**Messages**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: A user that is removed from an iMessage group could rejoin the group\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1771: Shreyas Ranganatha (@strawsnoceans)\n\n**Model I/O**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1762: Mickey Jin of Trend Micro\n\n**Model I/O**\n\nAvailable for: macOS Catalina 10.15.7\n\nImpact: Processing a maliciously crafted file may lead to heap corruption\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2020-29614: ZhiWei Sun (@5n1p3r0010) from Topsec Alpha Lab\n\n**Model I/O**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: A buffer overflow was addressed with improved bounds checking.\n\nCVE-2021-1763: Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\n**Model I/O**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted image may lead to heap corruption\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1767: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\n**Model I/O**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1745: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\n**Model I/O**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1753: Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\n**Model I/O**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1768: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\n**NetFSFramework**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: Mounting a maliciously crafted Samba network share may lead to arbitrary code execution\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1751: Mikko Kentt\u00e4l\u00e4 (@Turmio_) of SensorFu\n\n**OpenLDAP**\n\nAvailable for: macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2020-25709\n\n**Power Management**\n\nAvailable for: macOS Mojave 10.14.6, macOS Catalina 10.15.7\n\nImpact: A malicious application may be able to elevate privileges\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2020-27938: Tim Michaud (@TimGMichaud) of Leviathan\n\n**Screen Sharing**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Multiple issues in pcre\n\nDescription: Multiple issues were addressed by updating to version 8.44.\n\nCVE-2019-20838\n\nCVE-2020-14155\n\n**SQLite**\n\nAvailable for: macOS Catalina 10.15.7\n\nImpact: Multiple issues in SQLite\n\nDescription: Multiple issues were addressed with improved checks.\n\nCVE-2020-15358\n\n**Swift**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A malicious attacker with arbitrary read and write capability may be able to bypass Pointer Authentication\n\nDescription: A logic issue was addressed with improved validation.\n\nCVE-2021-1769: CodeColorist of Ant-Financial Light-Year Labs\n\n**WebKit**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1788: Francisco Alonso (@revskills)\n\n**WebKit**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Maliciously crafted web content may violate iframe sandboxing policy\n\nDescription: This issue was addressed with improved iframe sandbox enforcement.\n\nCVE-2021-1765: Eliya Stein of Confiant\n\nCVE-2021-1801: Eliya Stein of Confiant\n\n**WebKit**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A type confusion issue was addressed with improved state handling.\n\nCVE-2021-1789: @S0rryMybad of 360 Vulcan Team\n\n**WebKit**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.\n\nDescription: A logic issue was addressed with improved restrictions.\n\nCVE-2021-1871: an anonymous researcher\n\nCVE-2021-1870: an anonymous researcher\n\n**WebRTC**\n\nAvailable for: macOS Big Sur 11.0.1\n\nImpact: A malicious website may be able to access restricted ports on arbitrary servers\n\nDescription: A port redirection issue was addressed with additional port validation.\n\nCVE-2021-1799: Gregory Vishnepolsky &amp; Ben Seri of Armis Security, and Samy Kamkar\n\n\n\n## Additional recognition\n\n**Kernel**\n\nWe would like to acknowledge Junzhi Lu (@pwn0rz), Mickey Jin &amp; Jesse Change of Trend Micro for their assistance.\n\n**libpthread**\n\nWe would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.\n\n**Login Window**\n\nWe would like to acknowledge Jose Moises Romero-Villanueva of CrySolve for their assistance.\n\n**Mail Drafts**\n\nWe would like to acknowledge Jon Bottarini of HackerOne for their assistance.\n\n**Screen Sharing Server**\n\nWe would like to acknowledge @gorelics for their assistance.\n\n**WebRTC**\n\nWe would like to acknowledge Philipp Hancke for their assistance.\n", "edition": 3, "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 7.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-02-18T06:14:03", "title": "About the security content of macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave - Apple Support", "type": "apple", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 10.0, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1774", "CVE-2021-1736", "CVE-2021-1753", "CVE-2021-1775", "CVE-2021-1818", "CVE-2020-29614", "CVE-2021-1871", "CVE-2021-1772", "CVE-2021-1763", "CVE-2021-1778", "CVE-2021-1743", "CVE-2021-1769", "CVE-2021-1761", "CVE-2021-1762", "CVE-2021-1802", "CVE-2021-1792", "CVE-2020-14155", "CVE-2021-1757", "CVE-2021-1744", "CVE-2021-1786", "CVE-2021-1791", "CVE-2020-29633", "CVE-2021-1773", "CVE-2021-1767", "CVE-2021-1758", "CVE-2021-1777", "CVE-2021-1771", "CVE-2021-1787", "CVE-2021-1760", "CVE-2019-20838", "CVE-2021-1768", "CVE-2020-27938", "CVE-2021-1870", "CVE-2020-27904", "CVE-2021-1746", "CVE-2021-1745", "CVE-2021-1785", "CVE-2021-1759", "CVE-2021-1737", "CVE-2021-1742", "CVE-2021-1741", "CVE-2021-1747", "CVE-2021-1790", "CVE-2021-1801", "CVE-2020-29608", "CVE-2020-27945", "CVE-2021-1799", "CVE-2021-1788", "CVE-2021-1782", "CVE-2021-1766", "CVE-2021-1783", "CVE-2021-1779", "CVE-2021-1797", "CVE-2021-1738", "CVE-2020-25709", "CVE-2020-15358", "CVE-2021-1754", "CVE-2021-1765", "CVE-2021-1793", "CVE-2021-1776", "CVE-2021-1789", "CVE-2020-27937", "CVE-2021-1764", "CVE-2021-1751", "CVE-2021-1750"], "modified": "2021-02-18T06:14:03", "id": "APPLE:HT212147", "href": "https://support.apple.com/kb/HT212147", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2023-05-27T14:28:35", "description": "# About the security content of tvOS 14.4\n\nThis document describes the security content of tvOS 14.4.\n\n## About Apple security updates\n\nFor our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the [Apple security updates](<https://support.apple.com/kb/HT201222>) page.\n\nApple security documents reference vulnerabilities by [CVE-ID](<http://cve.mitre.org/about/>) when possible.\n\nFor more information about security, see the [Apple Product Security](<https://support.apple.com/kb/HT201220>) page.\n\n\n\n## tvOS 14.4\n\nReleased January 26, 2021\n\n**Analytics**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1761: Cees Elzinga\n\nEntry added February 1, 2021\n\n**APFS**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A local user may be able to read arbitrary files\n\nDescription: The issue was addressed with improved permissions logic.\n\nCVE-2021-1797: Thomas Tempelmann\n\nEntry added February 1, 2021\n\n**CoreAnimation**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A malicious application could execute arbitrary code leading to compromise of user information\n\nDescription: A memory corruption issue was addressed with improved state management.\n\nCVE-2021-1760: @S0rryMybad of 360 Vulcan Team\n\nEntry added February 1, 2021\n\n**CoreAudio**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing maliciously crafted web content may lead to code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1747: JunDong Xie of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**CoreGraphics**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted font file may lead to arbitrary code execution\n\nDescription: An out-of-bounds write issue was addressed with improved bounds checking.\n\nCVE-2021-1776: Ivan Fratric of Google Project Zero\n\nEntry added February 1, 2021\n\n**CoreMedia**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1759: Hou JingYi (@hjy79425575) of Qihoo 360 CERT\n\nEntry added February 1, 2021\n\n**CoreText**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted text file may lead to arbitrary code execution\n\nDescription: A stack overflow was addressed with improved input validation.\n\nCVE-2021-1772: Mickey Jin (@patch1t) of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**CoreText**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1792: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**Crash Reporter**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A local user may be able to create or modify system files\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1786: Csaba Fitzl (@theevilbit) of Offensive Security\n\nEntry added February 1, 2021\n\n**Crash Reporter**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1787: James Hutchins\n\nEntry added February 1, 2021\n\n**FairPlay**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A malicious application may be able to disclose kernel memory\n\nDescription: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation.\n\nCVE-2021-1791: Junzhi Lu(@pwn0rz), Qi Sun and Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**FontParser**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1758: Peter Nguyen of STAR Labs\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1818: Xingwei Lin of Ant-Financial Light-Year Security Lab\n\nEntry added March 16, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1766: Danny Rosseau of Carve Systems\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1785: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1744: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1818: Xingwei Lin of Ant-Financial Light-Year Security Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1742: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1746: Jeonghoon Shin(@singi21a) of THEORI, Mickey Jin &amp; Qi Sun of Trend Micro working with Trend Micro\u2019s Zero Day Initiative, Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1754: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1774: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1777: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1793: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1773: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1741: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1743: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative, Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: An out-of-bounds read issue existed in the curl. This issue was addressed with improved bounds checking.\n\nCVE-2021-1778: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An access issue was addressed with improved memory management.\n\nCVE-2021-1783: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**IOSkywalkFamily**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1757: Proteas and Pan ZhenPeng (@Peterpan0927) of Alibaba Security\n\nEntry added February 1, 2021\n\n**iTunes Store**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted URL may lead to arbitrary javascript code execution\n\nDescription: A validation issue was addressed with improved input sanitization.\n\nCVE-2021-1748: CodeColorist working with Ant Security Light-Year Labs\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**Kernel**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1764: @m00nbsd\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**Kernel**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1750: @0xalsr\n\nEntry added February 1, 2021\n\n**Kernel**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited.\n\nDescription: A race condition was addressed with improved locking.\n\nCVE-2021-1782: an anonymous researcher\n\n**Swift**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A malicious attacker with arbitrary read and write capability may be able to bypass Pointer Authentication\n\nDescription: A logic issue was addressed with improved validation.\n\nCVE-2021-1769: CodeColorist of Ant-Financial Light-Year Labs\n\nEntry added February 1, 2021\n\n**WebKit**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1788: Francisco Alonso (@revskills)\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**WebKit**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A type confusion issue was addressed with improved state handling.\n\nCVE-2021-1789: @S0rryMybad of 360 Vulcan Team\n\nEntry added February 1, 2021\n\n**WebKit**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Maliciously crafted web content may violate iframe sandboxing policy\n\nDescription: This issue was addressed with improved iframe sandbox enforcement.\n\nCVE-2021-1801: Eliya Stein of Confiant\n\nEntry added February 1, 2021\n\n**WebRTC**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A malicious website may be able to access restricted ports on arbitrary servers\n\nDescription: A port redirection issue was addressed with additional port validation.\n\nCVE-2021-1799: Gregory Vishnepolsky &amp; Ben Seri of Armis Security, and Samy Kamkar\n\nEntry added February 1, 2021\n\n\n\n## Additional recognition\n\n**iTunes Store**\n\nWe would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.\n\nEntry added February 1, 2021\n\n**Kernel**\n\nWe would like to acknowledge Junzhi Lu (@pwn0rz), Mickey Jin &amp; Jesse Change of Trend Micro for their assistance.\n\nEntry added February 1, 2021\n\n**libpthread**\n\nWe would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.\n\nEntry added February 1, 2021\n\n**Store Demo**\n\nWe would like to acknowledge @08Tc3wBB for their assistance.\n\nEntry added February 1, 2021\n\nInformation about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. [Contact the vendor](<http://support.apple.com/kb/HT2693>) for additional information.\n\nPublished Date: March 16, 2021\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-01-26T00:00:00", "type": "apple", "title": "About the security content of tvOS 14.4", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1741", "CVE-2021-1742", "CVE-2021-1743", "CVE-2021-1744", "CVE-2021-1746", "CVE-2021-1747", "CVE-2021-1748", "CVE-2021-1750", "CVE-2021-1754", "CVE-2021-1757", "CVE-2021-1758", "CVE-2021-1759", "CVE-2021-1760", "CVE-2021-1761", "CVE-2021-1764", "CVE-2021-1766", "CVE-2021-1769", "CVE-2021-1772", "CVE-2021-1773", "CVE-2021-1774", "CVE-2021-1776", "CVE-2021-1777", "CVE-2021-1778", "CVE-2021-1782", "CVE-2021-1783", "CVE-2021-1785", "CVE-2021-1786", "CVE-2021-1787", "CVE-2021-1788", "CVE-2021-1789", "CVE-2021-1791", "CVE-2021-1792", "CVE-2021-1793", "CVE-2021-1797", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1818"], "modified": "2021-01-26T00:00:00", "id": "APPLE:F8BE10D8CFAE590690202C33D00B6E6B", "href": "https://support.apple.com/kb/HT212149", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2023-05-30T06:02:31", "description": "# About the security content of watchOS 7.3\n\nThis document describes the security content of watchOS 7.3.\n\n## About Apple security updates\n\nFor our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the [Apple security updates](<https://support.apple.com/kb/HT201222>) page.\n\nApple security documents reference vulnerabilities by [CVE-ID](<http://cve.mitre.org/about/>) when possible.\n\nFor more information about security, see the [Apple Product Security](<https://support.apple.com/kb/HT201220>) page.\n\n\n\n## watchOS 7.3\n\nReleased January 26, 2021\n\n**Analytics**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1761: Cees Elzinga\n\nEntry added February 1, 2021\n\n**APFS**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A local user may be able to read arbitrary files\n\nDescription: The issue was addressed with improved permissions logic.\n\nCVE-2021-1797: Thomas Tempelmann\n\nEntry added February 1, 2021\n\n**CoreAnimation**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A malicious application could execute arbitrary code leading to compromise of user information\n\nDescription: A memory corruption issue was addressed with improved state management.\n\nCVE-2021-1760: @S0rryMybad of 360 Vulcan Team\n\nEntry added February 1, 2021\n\n**CoreAudio**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing maliciously crafted web content may lead to code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1747: JunDong Xie of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**CoreGraphics**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted font file may lead to arbitrary code execution\n\nDescription: An out-of-bounds write issue was addressed with improved bounds checking.\n\nCVE-2021-1776: Ivan Fratric of Google Project Zero\n\nEntry added February 1, 2021\n\n**CoreText**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted text file may lead to arbitrary code execution\n\nDescription: A stack overflow was addressed with improved input validation.\n\nCVE-2021-1772: Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**CoreText**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1792: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**Crash Reporter**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A local user may be able to create or modify system files\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1786: Csaba Fitzl (@theevilbit) of Offensive Security\n\nEntry added February 1, 2021\n\n**Crash Reporter**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1787: James Hutchins\n\nEntry added February 1, 2021\n\n**FairPlay**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A malicious application may be able to disclose kernel memory\n\nDescription: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation.\n\nCVE-2021-1791: Junzhi Lu(@pwn0rz), Qi Sun and Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**FontParser**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1758: Peter Nguyen of STAR Labs\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1818: Xingwei Lin of Ant-Financial Light-Year Security Lab\n\nEntry added March 16, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1773: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1766: Danny Rosseau of Carve Systems\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1785: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1744: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1818: Xingwei Lin of Ant-Financial Light-Year Security Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1742: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1746: Jeonghoon Shin(@singi21a) of THEORI, Mickey Jin &amp; Qi Sun of Trend Micro working with Trend Micro\u2019s Zero Day Initiative, Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1754: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1774: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1777: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1793: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1741: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1743: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative, Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: An out-of-bounds read issue existed in the curl. This issue was addressed with improved bounds checking.\n\nCVE-2021-1778: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An access issue was addressed with improved memory management.\n\nCVE-2021-1783: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**IOSkywalkFamily**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1757: Proteas and Pan ZhenPeng (@Peterpan0927) of Alibaba Security\n\nEntry added February 1, 2021\n\n**iTunes Store**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted URL may lead to arbitrary javascript code execution\n\nDescription: A validation issue was addressed with improved input sanitization.\n\nCVE-2021-1748: CodeColorist working with Ant Security Light-Year Labs\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**Kernel**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1764: @m00nbsd\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**Kernel**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1750: @0xalsr\n\nEntry added February 1, 2021\n\n**Kernel**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited.\n\nDescription: A race condition was addressed with improved locking.\n\nCVE-2021-1782: an anonymous researcher\n\n**Swift**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A malicious attacker with arbitrary read and write capability may be able to bypass Pointer Authentication\n\nDescription: A logic issue was addressed with improved validation.\n\nCVE-2021-1769: CodeColorist of Ant-Financial Light-Year Labs\n\nEntry added February 1, 2021\n\n**WebKit**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1788: Francisco Alonso (@revskills)\n\nEntry added February 1, 2021, updated March 16, 2021\n\n**WebKit**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A type confusion issue was addressed with improved state handling.\n\nCVE-2021-1789: @S0rryMybad of 360 Vulcan Team\n\nEntry added February 1, 2021\n\n**WebKit**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Maliciously crafted web content may violate iframe sandboxing policy\n\nDescription: This issue was addressed with improved iframe sandbox enforcement.\n\nCVE-2021-1801: Eliya Stein of Confiant\n\nEntry added February 1, 2021\n\n**WebRTC**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A malicious website may be able to access restricted ports on arbitrary servers\n\nDescription: A port redirection issue was addressed with additional port validation.\n\nCVE-2021-1799: Gregory Vishnepolsky &amp; Ben Seri of Armis Security, and Samy Kamkar\n\nEntry added February 1, 2021\n\n\n\n## Additional recognition\n\n**iTunes Store**\n\nWe would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.\n\nEntry added February 1, 2021\n\n**Kernel**\n\nWe would like to acknowledge Junzhi Lu (@pwn0rz), Mickey Jin &amp; Jesse Change of Trend Micro for their assistance.\n\nEntry added February 1, 2021\n\n**libpthread**\n\nWe would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.\n\nEntry added February 1, 2021\n\n**Store Demo**\n\nWe would like to acknowledge @08Tc3wBB for their assistance.\n\nEntry added February 1, 2021\n\nInformation about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. [Contact the vendor](<http://support.apple.com/kb/HT2693>) for additional information.\n\nPublished Date: March 16, 2021\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-01-26T00:00:00", "type": "apple", "title": "About the security content of watchOS 7.3", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1741", "CVE-2021-1742", "CVE-2021-1743", "CVE-2021-1744", "CVE-2021-1746", "CVE-2021-1747", "CVE-2021-1748", "CVE-2021-1750", "CVE-2021-1754", "CVE-2021-1757", "CVE-2021-1758", "CVE-2021-1760", "CVE-2021-1761", "CVE-2021-1764", "CVE-2021-1766", "CVE-2021-1769", "CVE-2021-1772", "CVE-2021-1773", "CVE-2021-1774", "CVE-2021-1776", "CVE-2021-1777", "CVE-2021-1778", "CVE-2021-1782", "CVE-2021-1783", "CVE-2021-1785", "CVE-2021-1786", "CVE-2021-1787", "CVE-2021-1788", "CVE-2021-1789", "CVE-2021-1791", "CVE-2021-1792", "CVE-2021-1793", "CVE-2021-1797", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1818"], "modified": "2021-01-26T00:00:00", "id": "APPLE:B69E745380EF6BD25EB61E697869CC84", "href": "https://support.apple.com/kb/HT212148", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2021-02-02T04:44:57", "description": "## About Apple security updates\n\nFor our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the [Apple security updates](<https://support.apple.com/kb/HT201222>) page.\n\nApple security documents reference vulnerabilities by [CVE-ID](<http://cve.mitre.org/about/>) when possible.\n\nFor more information about security, see the [Apple Product Security](<https://support.apple.com/kb/HT201220>) page.\n\n\n\n## tvOS 14.4\n\nReleased January 26, 2021\n\n**Analytics**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1761: Cees Elzinga\n\nEntry added February 1, 2021\n\n**APFS**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A local user may be able to read arbitrary files\n\nDescription: The issue was addressed with improved permissions logic.\n\nCVE-2021-1797: Thomas Tempelmann\n\nEntry added February 1, 2021\n\n**CoreAnimation**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A malicious application could execute arbitrary code leading to compromise of user information\n\nDescription: A memory corruption issue was addressed with improved state management.\n\nCVE-2021-1760: @S0rryMybad of 360 Vulcan Team\n\nEntry added February 1, 2021\n\n**CoreAudio**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing maliciously crafted web content may lead to code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1747: JunDong Xie of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**CoreGraphics**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted font file may lead to arbitrary code execution\n\nDescription: An out-of-bounds write issue was addressed with improved bounds checking.\n\nCVE-2021-1776: Ivan Fratric of Google Project Zero\n\nEntry added February 1, 2021\n\n**CoreMedia**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1759: Hou JingYi (@hjy79425575) of Qihoo 360 CERT\n\nEntry added February 1, 2021\n\n**CoreText**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted text file may lead to arbitrary code execution\n\nDescription: A stack overflow was addressed with improved input validation.\n\nCVE-2021-1772: Mickey Jin of Trend Micro\n\nEntry added February 1, 2021\n\n**CoreText**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1792: Mickey Jin &amp; Junzhi Lu of Trend Micro\n\nEntry added February 1, 2021\n\n**Crash Reporter**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A local user may be able to create or modify system files\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1786: Csaba Fitzl (@theevilbit) of Offensive Security\n\nEntry added February 1, 2021\n\n**Crash Reporter**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1787: James Hutchins\n\nEntry added February 1, 2021\n\n**FairPlay**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A malicious application may be able to disclose kernel memory\n\nDescription: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation.\n\nCVE-2021-1791: Junzhi Lu (@pwn0rz), Qi Sun &amp; Mickey Jin of Trend Micro\n\nEntry added February 1, 2021\n\n**FontParser**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1758: Peter Nguyen of STAR Labs\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1766: Danny Rosseau of Carve Systems\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1785: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1744: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1818: Xingwei Lin from Ant-financial Light-Year Security Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1746: Xingwei Lin of Ant Security Light-Year Lab, and Mickey Jin &amp; Qi Sun of Trend Micro\n\nCVE-2021-1793: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1773: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1741: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1743: Xingwei Lin of Ant Security Light-Year Lab, and Mickey Jin &amp; Junzhi Lu of Trend Micro\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: An out-of-bounds read issue existed in the curl. This issue was addressed with improved bounds checking.\n\nCVE-2021-1778: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An access issue was addressed with improved memory management.\n\nCVE-2021-1783: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**IOSkywalkFamily**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1757: Proteas and Pan ZhenPeng (@Peterpan0927) of Alibaba Security\n\nEntry added February 1, 2021\n\n**iTunes Store**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing a maliciously crafted URL may lead to arbitrary javascript code execution\n\nDescription: A validation issue was addressed with improved input sanitization.\n\nCVE-2021-1748: CodeColorist of Ant-Financial Light-Year Labs\n\nEntry added February 1, 2021\n\n**Kernel**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1764: Maxime Villard (m00nbsd)\n\nEntry added February 1, 2021\n\n**Kernel**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1750: @0xalsr\n\nEntry added February 1, 2021\n\n**Kernel**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited.\n\nDescription: A race condition was addressed with improved locking.\n\nCVE-2021-1782: an anonymous researcher\n\n**Swift**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A malicious attacker with arbitrary read and write capability may be able to bypass Pointer Authentication\n\nDescription: A logic issue was addressed with improved validation.\n\nCVE-2021-1769: CodeColorist of Ant-Financial Light-Year Labs\n\nEntry added February 1, 2021\n\n**WebKit**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1788: Francisco Alonso (@revskills)\n\nEntry added February 1, 2021\n\n**WebKit**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A type confusion issue was addressed with improved state handling.\n\nCVE-2021-1789: @S0rryMybad of 360 Vulcan Team\n\nEntry added February 1, 2021\n\n**WebKit**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: Maliciously crafted web content may violate iframe sandboxing policy\n\nDescription: This issue was addressed with improved iframe sandbox enforcement.\n\nCVE-2021-1801: Eliya Stein of Confiant\n\nEntry added February 1, 2021\n\n**WebRTC**\n\nAvailable for: Apple TV 4K and Apple TV HD\n\nImpact: A malicious website may be able to access restricted ports on arbitrary servers\n\nDescription: A port redirection issue was addressed with additional port validation.\n\nCVE-2021-1799: Gregory Vishnepolsky &amp; Ben Seri of Armis Security, and Samy Kamkar\n\nEntry added February 1, 2021\n\n\n\n## Additional recognition\n\n**iTunes Store**\n\nWe would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.\n\nEntry added February 1, 2021\n\n**Kernel**\n\nWe would like to acknowledge Junzhi Lu (@pwn0rz), Mickey Jin &amp; Jesse Change of Trend Micro for their assistance.\n\nEntry added February 1, 2021\n\n**libpthread**\n\nWe would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.\n\nEntry added February 1, 2021\n\n**Store Demo**\n\nWe would like to acknowledge @08Tc3wBB for their assistance.\n\nEntry added February 1, 2021\n", "edition": 3, "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 7.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-02-01T06:39:19", "title": "About the security content of tvOS 14.4 - Apple Support", "type": "apple", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 10.0, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1818", "CVE-2021-1772", "CVE-2021-1778", "CVE-2021-1743", "CVE-2021-1769", "CVE-2021-1761", "CVE-2021-1792", "CVE-2021-1757", "CVE-2021-1744", "CVE-2021-1786", "CVE-2021-1791", "CVE-2021-1748", "CVE-2021-1773", "CVE-2021-1758", "CVE-2021-1787", "CVE-2021-1760", "CVE-2021-1746", "CVE-2021-1785", "CVE-2021-1759", "CVE-2021-1741", "CVE-2021-1747", "CVE-2021-1801", "CVE-2021-1799", "CVE-2021-1788", "CVE-2021-1782", "CVE-2021-1766", "CVE-2021-1783", "CVE-2021-1797", "CVE-2021-1793", "CVE-2021-1776", "CVE-2021-1789", "CVE-2021-1764", "CVE-2021-1750"], "modified": "2021-02-01T06:39:19", "id": "APPLE:HT212149", "href": "https://support.apple.com/kb/HT212149", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2021-02-02T04:43:06", "description": "## About Apple security updates\n\nFor our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the [Apple security updates](<https://support.apple.com/kb/HT201222>) page.\n\nApple security documents reference vulnerabilities by [CVE-ID](<http://cve.mitre.org/about/>) when possible.\n\nFor more information about security, see the [Apple Product Security](<https://support.apple.com/kb/HT201220>) page.\n\n\n\n## watchOS 7.3\n\nReleased January 26, 2021\n\n**Analytics**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1761: Cees Elzinga\n\nEntry added February 1, 2021\n\n**APFS**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A local user may be able to read arbitrary files\n\nDescription: The issue was addressed with improved permissions logic.\n\nCVE-2021-1797: Thomas Tempelmann\n\nEntry added February 1, 2021\n\n**CoreAnimation**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A malicious application could execute arbitrary code leading to compromise of user information\n\nDescription: A memory corruption issue was addressed with improved state management.\n\nCVE-2021-1760: @S0rryMybad of 360 Vulcan Team\n\nEntry added February 1, 2021\n\n**CoreAudio**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing maliciously crafted web content may lead to code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1747: JunDong Xie of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**CoreGraphics**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted font file may lead to arbitrary code execution\n\nDescription: An out-of-bounds write issue was addressed with improved bounds checking.\n\nCVE-2021-1776: Ivan Fratric of Google Project Zero\n\nEntry added February 1, 2021\n\n**CoreText**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted text file may lead to arbitrary code execution\n\nDescription: A stack overflow was addressed with improved input validation.\n\nCVE-2021-1772: Mickey Jin of Trend Micro\n\nEntry added February 1, 2021\n\n**CoreText**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1792: Mickey Jin &amp; Junzhi Lu of Trend Micro\n\nEntry added February 1, 2021\n\n**Crash Reporter**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A local user may be able to create or modify system files\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1786: Csaba Fitzl (@theevilbit) of Offensive Security\n\nEntry added February 1, 2021\n\n**Crash Reporter**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1787: James Hutchins\n\nEntry added February 1, 2021\n\n**FairPlay**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A malicious application may be able to disclose kernel memory\n\nDescription: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation.\n\nCVE-2021-1791: Junzhi Lu (@pwn0rz), Qi Sun &amp; Mickey Jin of Trend Micro\n\nEntry added February 1, 2021\n\n**FontParser**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1758: Peter Nguyen of STAR Labs\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1773: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1766: Danny Rosseau of Carve Systems\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1785: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1744: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1818: Xingwei Lin from Ant-Financial Light-Year Security Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1746: Xingwei Lin of Ant Security Light-Year Lab, and Mickey Jin &amp; Qi Sun of Trend Micro\n\nCVE-2021-1793: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1741: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1743: Xingwei Lin of Ant Security Light-Year Lab, and Mickey Jin &amp; Junzhi Lu of Trend Micro\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: An out-of-bounds read issue existed in the curl. This issue was addressed with improved bounds checking.\n\nCVE-2021-1778: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An access issue was addressed with improved memory management.\n\nCVE-2021-1783: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**IOSkywalkFamily**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1757: Proteas and Pan ZhenPeng (@Peterpan0927) of Alibaba Security\n\nEntry added February 1, 2021\n\n**iTunes Store**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing a maliciously crafted URL may lead to arbitrary javascript code execution\n\nDescription: A validation issue was addressed with improved input sanitization.\n\nCVE-2021-1748: CodeColorist of Ant-Financial Light-Year Labs\n\nEntry added February 1, 2021\n\n**Kernel**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1764: Maxime Villard (m00nbsd)\n\nEntry added February 1, 2021\n\n**Kernel**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1750: @0xalsr\n\nEntry added February 1, 2021\n\n**Kernel**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited.\n\nDescription: A race condition was addressed with improved locking.\n\nCVE-2021-1782: an anonymous researcher\n\n**Swift**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A malicious attacker with arbitrary read and write capability may be able to bypass Pointer Authentication\n\nDescription: A logic issue was addressed with improved validation.\n\nCVE-2021-1769: CodeColorist of Ant-Financial Light-Year Labs\n\nEntry added February 1, 2021\n\n**WebKit**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1788: Francisco Alonso (@revskills)\n\nEntry added February 1, 2021\n\n**WebKit**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A type confusion issue was addressed with improved state handling.\n\nCVE-2021-1789: @S0rryMybad of 360 Vulcan Team\n\nEntry added February 1, 2021\n\n**WebKit**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: Maliciously crafted web content may violate iframe sandboxing policy\n\nDescription: This issue was addressed with improved iframe sandbox enforcement.\n\nCVE-2021-1801: Eliya Stein of Confiant\n\nEntry added February 1, 2021\n\n**WebRTC**\n\nAvailable for: Apple Watch Series 3 and later\n\nImpact: A malicious website may be able to access restricted ports on arbitrary servers\n\nDescription: A port redirection issue was addressed with additional port validation.\n\nCVE-2021-1799: Gregory Vishnepolsky &amp; Ben Seri of Armis Security, and Samy Kamkar\n\nEntry added February 1, 2021\n\n\n\n## Additional recognition\n\n**iTunes Store**\n\nWe would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.\n\nEntry added February 1, 2021\n\n**Kernel**\n\nWe would like to acknowledge Junzhi Lu (@pwn0rz), Mickey Jin &amp; Jesse Change of Trend Micro for their assistance.\n\nEntry added February 1, 2021\n\n**libpthread**\n\nWe would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.\n\nEntry added February 1, 2021\n\n**Store Demo**\n\nWe would like to acknowledge @08Tc3wBB for their assistance.\n\nEntry added February 1, 2021\n", "edition": 3, "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 7.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-02-01T06:39:19", "title": "About the security content of watchOS 7.3 - Apple Support", "type": "apple", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 10.0, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1818", "CVE-2021-1772", "CVE-2021-1778", "CVE-2021-1743", "CVE-2021-1769", "CVE-2021-1761", "CVE-2021-1792", "CVE-2021-1757", "CVE-2021-1744", "CVE-2021-1786", "CVE-2021-1791", "CVE-2021-1748", "CVE-2021-1773", "CVE-2021-1758", "CVE-2021-1787", "CVE-2021-1760", "CVE-2021-1746", "CVE-2021-1785", "CVE-2021-1741", "CVE-2021-1747", "CVE-2021-1801", "CVE-2021-1799", "CVE-2021-1788", "CVE-2021-1782", "CVE-2021-1766", "CVE-2021-1783", "CVE-2021-1797", "CVE-2021-1793", "CVE-2021-1776", "CVE-2021-1789", "CVE-2021-1764", "CVE-2021-1750"], "modified": "2021-02-01T06:39:19", "id": "APPLE:HT212148", "href": "https://support.apple.com/kb/HT212148", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2023-05-27T22:02:38", "description": "# About the security content of iOS 14.4 and iPadOS 14.4\n\nThis document describes the security content of iOS 14.4 and iPadOS 14.4.\n\n## About Apple security updates\n\nFor our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the [Apple security updates](<https://support.apple.com/kb/HT201222>) page.\n\nApple security documents reference vulnerabilities by [CVE-ID](<http://cve.mitre.org/about/>) when possible.\n\nFor more information about security, see the [Apple Product Security](<https://support.apple.com/kb/HT201220>) page.\n\n\n\n## iOS 14.4 and iPadOS 14.4\n\nReleased January 26, 2021\n\n**Analytics**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation) \n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1761: Cees Elzinga\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**APFS**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A local user may be able to read arbitrary files\n\nDescription: The issue was addressed with improved permissions logic.\n\nCVE-2021-1797: Thomas Tempelmann\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**Bluetooth**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1794: Jianjun Dai of 360 Alpha Lab\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**Bluetooth**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1795: Jianjun Dai of 360 Alpha Lab\n\nCVE-2021-1796: Jianjun Dai of 360 Alpha Lab\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**Bluetooth**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: An attacker in a privileged position may be able to perform a denial of service attack\n\nDescription: A memory initialization issue was addressed with improved memory handling.\n\nCVE-2021-1780: Jianjun Dai of 360 Alpha Lab\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**CoreAnimation**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A malicious application could execute arbitrary code leading to compromise of user information\n\nDescription: A memory corruption issue was addressed with improved state management.\n\nCVE-2021-1760: @S0rryMybad of 360 Vulcan Team\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**CoreAudio**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing maliciously crafted web content may lead to code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1747: JunDong Xie of Ant Security Light-Year Lab\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**CoreGraphics**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted font file may lead to arbitrary code execution\n\nDescription: An out-of-bounds write issue was addressed with improved bounds checking.\n\nCVE-2021-1776: Ivan Fratric of Google Project Zero\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**CoreMedia**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1759: Hou JingYi (@hjy79425575) of Qihoo 360 CERT\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**CoreText**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted text file may lead to arbitrary code execution\n\nDescription: A stack overflow was addressed with improved input validation.\n\nCVE-2021-1772: Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**CoreText**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1792: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**Crash Reporter**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A local user may be able to create or modify system files\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1786: Csaba Fitzl (@theevilbit) of Offensive Security\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**Crash Reporter**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1787: James Hutchins\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**FairPlay**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A malicious application may be able to disclose kernel memory\n\nDescription: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation.\n\nCVE-2021-1791: Junzhi Lu(@pwn0rz), Qi Sun and Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**FontParser**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1758: Peter Nguyen of STAR Labs\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1773: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1766: Danny Rosseau of Carve Systems\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1785: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1737: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1738: Lei Sun\n\nCVE-2021-1744: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1818: Xingwei Lin of Ant-Financial Light-Year Security Lab\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation) \n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1838: Mickey Jin &amp; Qi Sun of Trend Micro working with Trend Micro's Zero Day Initiative\n\nCVE-2021-1742: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1746: Xingwei Lin of Ant Security Light-Year Lab, Mickey Jin &amp; Qi Sun of Trend Micro working with Trend Micro\u2019s Zero Day Initiative, and Jeonghoon Shin(@singi21a) of THEORI\n\nCVE-2021-1754: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1774: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1793: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1741: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1743: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative, Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: An out-of-bounds read issue existed in the curl. This issue was addressed with improved bounds checking.\n\nCVE-2021-1778: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An access issue was addressed with improved memory management.\n\nCVE-2021-1783: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**IOSkywalkFamily**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1757: Proteas and Pan ZhenPeng (@Peterpan0927) of Alibaba Security\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**iTunes Store**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted URL may lead to arbitrary javascript code execution\n\nDescription: A validation issue was addressed with improved input sanitization.\n\nCVE-2021-1748: CodeColorist working with Ant Security Light-Year Labs\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**Kernel**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1764: @m00nbsd\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**Kernel**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1750: @0xalsr\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**Kernel**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited.\n\nDescription: A race condition was addressed with improved locking.\n\nCVE-2021-1782: an anonymous researcher\n\nEntry updated May 28, 2021 \n\n**Messages**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A malicious application may be able to leak sensitive user information\n\nDescription: A privacy issue existed in the handling of Contact cards. This was addressed with improved state management.\n\nCVE-2021-1781: Csaba Fitzl (@theevilbit) of Offensive Security\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**Model I/O**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: A buffer overflow was addressed with improved bounds checking.\n\nCVE-2021-1763: Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**Model I/O**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1768: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**Model I/O**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1745: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**Model I/O**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1762: Mickey Jin of Trend Micro\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**Model I/O**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1762: Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**Model I/O**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to heap corruption\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1767: Mickey Jin &amp; Junzhi Lu of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**Model I/O**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1753: Mickey Jin of Trend Micro\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**Model I/O**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1753: Mickey Jin of Trend Micro working with Trend Micro\u2019s Zero Day Initiative\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**Phone Keypad**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: An attacker with physical access to a device may be able to see private contact information\n\nDescription: A lock screen issue allowed access to contacts on a locked device. This issue was addressed with improved state management.\n\nCVE-2021-1756: Ryan Pickren (ryanpickren.com)\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**Swift**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A malicious attacker with arbitrary read and write capability may be able to bypass Pointer Authentication\n\nDescription: A logic issue was addressed with improved validation.\n\nCVE-2021-1769: CodeColorist of Ant-Financial Light-Year Labs\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**WebKit**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1788: Francisco Alonso (@revskills)\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**WebKit**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A type confusion issue was addressed with improved state handling.\n\nCVE-2021-1789: @S0rryMybad of 360 Vulcan Team\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**WebKit**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Maliciously crafted web content may violate iframe sandboxing policy\n\nDescription: This issue was addressed with improved iframe sandbox enforcement.\n\nCVE-2021-1801: Eliya Stein of Confiant\n\nEntry added February 1, 2021, updated May 28, 2021 \n\n**WebKit**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.\n\nDescription: A logic issue was addressed with improved restrictions.\n\nCVE-2021-1871: an anonymous researcher\n\nCVE-2021-1870: an anonymous researcher\n\nEntry updated May 28, 2021 \n\n**WebRTC**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models) iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A malicious website may be able to access restricted ports on arbitrary servers\n\nDescription: A port redirection issue was addressed with additional port validation.\n\nCVE-2021-1799: Gregory Vishnepolsky &amp; Ben Seri of Armis Security, and Samy Kamkar\n\nEntry added February 1, 2021, updated May 28, 2021\n\n**XNU**\n\nAvailable for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation) \n\nImpact: A malicious application may be able to execute arbitrary code with kernel privileges\n\nDescription: A type confusion issue was addressed with improved state handling.\n\nCVE-2021-30869: Apple\n\nEntry added September 23, 2021\n\n\n\n## Additional recognition\n\n**iTunes Store**\n\nWe would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.\n\nEntry added February 1, 2021\n\n**Kernel**\n\nWe would like to acknowledge Junzhi Lu (@pwn0rz), Mickey Jin &amp; Jesse Change of Trend Micro for their assistance.\n\nEntry added February 1, 2021\n\n**libpthread**\n\nWe would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.\n\nEntry added February 1, 2021\n\n**Mail**\n\nWe would like to acknowledge Yi\u011fit Can YILMAZ (@yilmazcanyigit) and an anonymous researcher for their assistance.\n\nEntry added February 1, 2021\n\n**Store Demo**\n\nWe would like to acknowledge @08Tc3wBB for their assistance.\n\nEntry added February 1, 2021\n\n**WebRTC**\n\nWe would like to acknowledge Philipp Hancke for their assistance.\n\nEntry added February 1, 2021\n\n**Wi-Fi**\n\nWe would like to acknowledge an anonymous researcher for their assistance.\n\nEntry added February 1, 2021\n\nInformation about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. [Contact the vendor](<http://support.apple.com/kb/HT2693>) for additional information.\n\nPublished Date: September 23, 2021\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-01-26T00:00:00", "type": "apple", "title": "About the security content of iOS 14.4 and iPadOS 14.4", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1737", "CVE-2021-1738", "CVE-2021-1741", "CVE-2021-1742", "CVE-2021-1743", "CVE-2021-1744", "CVE-2021-1745", "CVE-2021-1746", "CVE-2021-1747", "CVE-2021-1748", "CVE-2021-1750", "CVE-2021-1753", "CVE-2021-1754", "CVE-2021-1756", "CVE-2021-1757", "CVE-2021-1758", "CVE-2021-1759", "CVE-2021-1760", "CVE-2021-1761", "CVE-2021-1762", "CVE-2021-1763", "CVE-2021-1764", "CVE-2021-1766", "CVE-2021-1767", "CVE-2021-1768", "CVE-2021-1769", "CVE-2021-1772", "CVE-2021-1773", "CVE-2021-1774", "CVE-2021-1776", "CVE-2021-1778", "CVE-2021-1780", "CVE-2021-1781", "CVE-2021-1782", "CVE-2021-1783", "CVE-2021-1785", "CVE-2021-1786", "CVE-2021-1787", "CVE-2021-1788", "CVE-2021-1789", "CVE-2021-1791", "CVE-2021-1792", "CVE-2021-1793", "CVE-2021-1794", "CVE-2021-1795", "CVE-2021-1796", "CVE-2021-1797", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1818", "CVE-2021-1838", "CVE-2021-1870", "CVE-2021-1871", "CVE-2021-30869"], "modified": "2021-01-26T00:00:00", "id": "APPLE:341D114D330F307514C2721DBB8BFACA", "href": "https://support.apple.com/kb/HT212146", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2021-02-02T04:42:46", "description": "## About Apple security updates\n\nFor our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the [Apple security updates](<https://support.apple.com/kb/HT201222>) page.\n\nApple security documents reference vulnerabilities by [CVE-ID](<http://cve.mitre.org/about/>) when possible.\n\nFor more information about security, see the [Apple Product Security](<https://support.apple.com/kb/HT201220>) page.\n\n\n\n## iOS 14.4 and iPadOS 14.4\n\nReleased January 26, 2021\n\n**Analytics**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1761: Cees Elzinga\n\nEntry added February 1, 2021\n\n**APFS**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A local user may be able to read arbitrary files\n\nDescription: The issue was addressed with improved permissions logic.\n\nCVE-2021-1797: Thomas Tempelmann\n\nEntry added February 1, 2021\n\n**Bluetooth**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1794: Jianjun Dai of 360 Alpha Lab\n\nEntry added February 1, 2021\n\n**Bluetooth**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1795: Jianjun Dai of 360 Alpha Lab\n\nCVE-2021-1796: Jianjun Dai of 360 Alpha Lab\n\nEntry added February 1, 2021\n\n**Bluetooth**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: An attacker in a privileged position may be able to perform a denial of service attack\n\nDescription: A memory initialization issue was addressed with improved memory handling.\n\nCVE-2021-1780: Jianjun Dai of 360 Alpha Lab\n\nEntry added February 1, 2021\n\n**CoreAnimation**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A malicious application could execute arbitrary code leading to compromise of user information\n\nDescription: A memory corruption issue was addressed with improved state management.\n\nCVE-2021-1760: @S0rryMybad of 360 Vulcan Team\n\nEntry added February 1, 2021\n\n**CoreAudio**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing maliciously crafted web content may lead to code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1747: JunDong Xie of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**CoreGraphics**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted font file may lead to arbitrary code execution\n\nDescription: An out-of-bounds write issue was addressed with improved bounds checking.\n\nCVE-2021-1776: Ivan Fratric of Google Project Zero\n\nEntry added February 1, 2021\n\n**CoreMedia**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1759: Hou JingYi (@hjy79425575) of Qihoo 360 CERT\n\nEntry added February 1, 2021\n\n**CoreText**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted text file may lead to arbitrary code execution\n\nDescription: A stack overflow was addressed with improved input validation.\n\nCVE-2021-1772: Mickey Jin of Trend Micro\n\nEntry added February 1, 2021\n\n**CoreText**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1792: Mickey Jin &amp; Junzhi Lu of Trend Micro\n\nEntry added February 1, 2021\n\n**Crash Reporter**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A local user may be able to create or modify system files\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1786: Csaba Fitzl (@theevilbit) of Offensive Security\n\nEntry added February 1, 2021\n\n**Crash Reporter**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1787: James Hutchins\n\nEntry added February 1, 2021\n\n**FairPlay**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A malicious application may be able to disclose kernel memory\n\nDescription: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation.\n\nCVE-2021-1791: Junzhi Lu (@pwn0rz), Qi Sun &amp; Mickey Jin of Trend Micro\n\nEntry added February 1, 2021\n\n**FontParser**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1758: Peter Nguyen of STAR Labs\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1773: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1766: Danny Rosseau of Carve Systems\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1785: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1744: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution\n\nDescription: A logic issue was addressed with improved state management.\n\nCVE-2021-1818: Xingwei Lin from Ant-Financial Light-Year Security Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1746: Xingwei Lin of Ant Security Light-Year Lab, and Mickey Jin &amp; Qi Sun of Trend Micro\n\nCVE-2021-1793: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1741: Xingwei Lin of Ant Security Light-Year Lab\n\nCVE-2021-1743: Xingwei Lin of Ant Security Light-Year Lab, and Mickey Jin &amp; Junzhi Lu of Trend Micro\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to a denial of service\n\nDescription: An out-of-bounds read issue existed in the curl. This issue was addressed with improved bounds checking.\n\nCVE-2021-1778: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**ImageIO**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An access issue was addressed with improved memory management.\n\nCVE-2021-1783: Xingwei Lin of Ant Security Light-Year Lab\n\nEntry added February 1, 2021\n\n**IOSkywalkFamily**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A local attacker may be able to elevate their privileges\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1757: Proteas and Pan ZhenPeng (@Peterpan0927) of Alibaba Security\n\nEntry added February 1, 2021\n\n**iTunes Store**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted URL may lead to arbitrary javascript code execution\n\nDescription: A validation issue was addressed with improved input sanitization.\n\nCVE-2021-1748: CodeColorist of Ant-Financial Light-Year Labs\n\nEntry added February 1, 2021\n\n**Kernel**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause a denial of service\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1764: Maxime Villard (@m00nbsd)\n\nEntry added February 1, 2021\n\n**Kernel**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: An application may be able to execute arbitrary code with kernel privileges\n\nDescription: Multiple issues were addressed with improved logic.\n\nCVE-2021-1750: @0xalsr\n\nEntry added February 1, 2021\n\n**Kernel**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited.\n\nDescription: A race condition was addressed with improved locking.\n\nCVE-2021-1782: an anonymous researcher\n\n**Messages**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A malicious application may be able to leak sensitive user information\n\nDescription: A privacy issue existed in the handling of Contact cards. This was addressed with improved state management.\n\nCVE-2021-1781: Csaba Fitzl (@theevilbit) of Offensive Security\n\nEntry added February 1, 2021\n\n**Model I/O**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: A buffer overflow was addressed with improved bounds checking.\n\nCVE-2021-1763: Mickey Jin of Trend Micro\n\nEntry added February 1, 2021\n\n**Model I/O**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1768: Mickey Jin &amp; Junzhi Lu of Trend Micro\n\nEntry added February 1, 2021\n\n**Model I/O**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved input validation.\n\nCVE-2021-1745: Mickey Jin &amp; Junzhi Lu of Trend Micro\n\nEntry added February 1, 2021\n\n**Model I/O**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted USD file may lead to unexpected application termination or arbitrary code execution\n\nDescription: An out-of-bounds write was addressed with improved input validation.\n\nCVE-2021-1762: Mickey Jin of Trend Micro\n\nEntry added February 1, 2021\n\n**Model I/O**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to heap corruption\n\nDescription: This issue was addressed with improved checks.\n\nCVE-2021-1767: Mickey Jin &amp; Junzhi Lu of Trend Micro\n\nEntry added February 1, 2021\n\n**Model I/O**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing a maliciously crafted image may lead to arbitrary code execution\n\nDescription: An out-of-bounds read was addressed with improved bounds checking.\n\nCVE-2021-1753: Mickey Jin of Trend Micro\n\nEntry added February 1, 2021\n\n**Phone Keypad**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: An attacker with physical access to a device may be able to see private contact information\n\nDescription: A lock screen issue allowed access to contacts on a locked device. This issue was addressed with improved state management.\n\nCVE-2021-1756: Ryan Pickren (ryanpickren.com)\n\nEntry added February 1, 2021\n\n**Swift**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A malicious attacker with arbitrary read and write capability may be able to bypass Pointer Authentication\n\nDescription: A logic issue was addressed with improved validation.\n\nCVE-2021-1769: CodeColorist of Ant-Financial Light-Year Labs\n\nEntry added February 1, 2021\n\n**WebKit**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1788: Francisco Alonso (@revskills)\n\nEntry added February 1, 2021\n\n**WebKit**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A type confusion issue was addressed with improved state handling.\n\nCVE-2021-1789: @S0rryMybad of 360 Vulcan Team\n\nEntry added February 1, 2021\n\n**WebKit**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: Maliciously crafted web content may violate iframe sandboxing policy\n\nDescription: This issue was addressed with improved iframe sandbox enforcement.\n\nCVE-2021-1801: Eliya Stein of Confiant\n\nEntry added February 1, 2021\n\n**WebKit**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.\n\nDescription: A logic issue was addressed with improved restrictions.\n\nCVE-2021-1871: an anonymous researcher\n\nCVE-2021-1870: an anonymous researcher\n\n**WebRTC**\n\nAvailable for: iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation)\n\nImpact: A malicious website may be able to access restricted ports on arbitrary servers\n\nDescription: A port redirection issue was addressed with additional port validation.\n\nCVE-2021-1799: Gregory Vishnepolsky &amp; Ben Seri of Armis Security, and Samy Kamkar\n\nEntry added February 1, 2021\n\n\n\n## Additional recognition\n\n**iTunes Store**\n\nWe would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.\n\nEntry added February 1, 2021\n\n**Kernel**\n\nWe would like to acknowledge Junzhi Lu (@pwn0rz), Mickey Jin &amp; Jesse Change of Trend Micro for their assistance.\n\nEntry added February 1, 2021\n\n**libpthread**\n\nWe would like to acknowledge CodeColorist of Ant-Financial Light-Year Labs for their assistance.\n\nEntry added February 1, 2021\n\n**Mail**\n\nWe would like to acknowledge Yi\u011fit Can YILMAZ (@yilmazcanyigit) and an anonymous researcher for their assistance.\n\nEntry added February 1, 2021\n\n**Store Demo**\n\nWe would like to acknowledge @08Tc3wBB for their assistance.\n\nEntry added February 1, 2021\n\n**WebRTC**\n\nWe would like to acknowledge Philipp Hancke for their assistance.\n\nEntry added February 1, 2021\n\n**Wi-Fi**\n\nWe would like to acknowledge an anonymous researcher for their assistance.\n\nEntry added February 1, 2021\n", "edition": 3, "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 7.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-02-01T06:39:19", "title": "About the security content of iOS 14.4 and iPadOS 14.4 - Apple Support", "type": "apple", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 10.0, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1753", "CVE-2021-1818", "CVE-2021-1871", "CVE-2021-1772", "CVE-2021-1763", "CVE-2021-1778", "CVE-2021-1743", "CVE-2021-1769", "CVE-2021-1761", "CVE-2021-1762", "CVE-2021-1780", "CVE-2021-1792", "CVE-2021-1794", "CVE-2021-1757", "CVE-2021-1795", "CVE-2021-1744", "CVE-2021-1786", "CVE-2021-1791", "CVE-2021-1748", "CVE-2021-1773", "CVE-2021-1767", "CVE-2021-1758", "CVE-2021-1787", "CVE-2021-1760", "CVE-2021-1768", "CVE-2021-1870", "CVE-2021-1746", "CVE-2021-1745", "CVE-2021-1785", "CVE-2021-1759", "CVE-2021-1756", "CVE-2021-1741", "CVE-2021-1747", "CVE-2021-1801", "CVE-2021-1781", "CVE-2021-1799", "CVE-2021-1788", "CVE-2021-1782", "CVE-2021-1766", "CVE-2021-1783", "CVE-2021-1797", "CVE-2021-1793", "CVE-2021-1776", "CVE-2021-1789", "CVE-2021-1796", "CVE-2021-1764", "CVE-2021-1750"], "modified": "2021-02-01T06:39:19", "id": "APPLE:HT212146", "href": "https://support.apple.com/kb/HT212146", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2021-02-02T04:42:33", "description": "## About Apple security updates\n\nFor our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the [Apple security updates](<https://support.apple.com/kb/HT201222>) page.\n\nApple security documents reference vulnerabilities by [CVE-ID](<http://cve.mitre.org/about/>) when possible.\n\nFor more information about security, see the [Apple Product Security](<https://support.apple.com/kb/HT201220>) page.\n\n\n\n## Safari 14.0.3\n\nReleased February 1, 2021\n\n**WebKit**\n\nAvailable for: macOS Catalina and macOS Mojave\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1788: Francisco Alonso (@revskills)\n\n**WebKit**\n\nAvailable for: macOS Catalina and macOS Mojave\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A type confusion issue was addressed with improved state handling.\n\nCVE-2021-1789: @S0rryMybad of 360 Vulcan Team\n\n**WebRTC**\n\nAvailable for: macOS Catalina and macOS Mojave\n\nImpact: A malicious website may be able to access restricted ports on arbitrary servers\n\nDescription: A port redirection issue was addressed with additional port validation.\n\nCVE-2021-1799: Gregory Vishnepolsky &amp; Ben Seri of Armis Security, and Samy Kamkar\n", "edition": 2, "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-02-02T01:16:45", "title": "About the security content of Safari 14.0.3 - Apple Support", "type": "apple", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1799", "CVE-2021-1788", "CVE-2021-1789"], "modified": "2021-02-02T01:16:45", "id": "APPLE:HT212152", "href": "https://support.apple.com/kb/HT212152", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2023-06-04T14:30:12", "description": "# About the security content of Safari 14.0.3\n\nThis document describes the security content of Safari 14.0.3.\n\n## About Apple security updates\n\nFor our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the [Apple security updates](<https://support.apple.com/kb/HT201222>) page.\n\nApple security documents reference vulnerabilities by [CVE-ID](<http://cve.mitre.org/about/>) when possible.\n\nFor more information about security, see the [Apple Product Security](<https://support.apple.com/kb/HT201220>) page.\n\n\n\n## Safari 14.0.3\n\nReleased February 1, 2021\n\n**WebKit**\n\nAvailable for: macOS Catalina and macOS Mojave\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A use after free issue was addressed with improved memory management.\n\nCVE-2021-1788: Francisco Alonso (@revskills)\n\n**WebKit**\n\nAvailable for: macOS Catalina and macOS Mojave\n\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution\n\nDescription: A type confusion issue was addressed with improved state handling.\n\nCVE-2021-1789: @S0rryMybad of 360 Vulcan Team\n\n**WebRTC**\n\nAvailable for: macOS Catalina and macOS Mojave\n\nImpact: A malicious website may be able to access restricted ports on arbitrary servers\n\nDescription: A port redirection issue was addressed with additional port validation.\n\nCVE-2021-1799: Gregory Vishnepolsky &amp; Ben Seri of Armis Security, and Samy Kamkar\n\nInformation about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. [Contact the vendor](<http://support.apple.com/kb/HT2693>) for additional information.\n\nPublished Date: February 02, 2021\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-02-01T00:00:00", "type": "apple", "title": "About the security content of Safari 14.0.3", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1788", "CVE-2021-1789", "CVE-2021-1799"], "modified": "2021-02-01T00:00:00", "id": "APPLE:E089C70AAAA309D453F1842290AF4B47", "href": "https://support.apple.com/kb/HT212152", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-04T14:30:01", "description": "# About the security content of Security Update 2021-006 Catalina\n\nThis document describes the security content of Security Update 2021-006 Catalina.\n\n## About Apple security updates\n\nFor our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the [Apple security updates](<https://support.apple.com/kb/HT201222>) page.\n\nApple security documents reference vulnerabilities by [CVE-ID](<http://cve.mitre.org/about/>) when possible.\n\nFor more information about security, see the [Apple Product Security](<https://support.apple.com/kb/HT201220>) page.\n\n\n\n## Security Update 2021-006 Catalina\n\nReleased September 23, 2021\n\n**XNU**\n\nAvailable for: macOS Catalina \n\nImpact: A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.\n\nDescription: A type confusion issue was addressed with improved state handling.\n\nCVE-2021-30869: Erye Hernandez of Google Threat Analysis Group, Cl\u00e9ment Lecigne of Google Threat Analysis Group, and Ian Beer of Google Project Zero\n\n\n\nInformation about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. [Contact the vendor](<http://support.apple.com/kb/HT2693>) for additional information.\n\nPublished Date: September 23, 2021\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 7.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-09-23T00:00:00", "type": "apple", "title": "About the security content of Security Update 2021-006 Catalina", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-30869"], "modified": "2021-09-23T00:00:00", "id": "APPLE:BA98C8C16843FE168383A913EC4AD2F4", "href": "https://support.apple.com/kb/HT212825", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}], "suse": [{"lastseen": "2022-11-10T02:12:05", "description": "An update that fixes 10 vulnerabilities is now available.\n\nDescription:\n\n This update for webkit2gtk3 fixes the following issues:\n\n - Update to version 2.32.0 (bsc#1184155):\n * Fix the authentication request port when URL omits the port.\n * Fix iframe scrolling when main frame is scrolled in async\n * scrolling mode.\n * Stop using g_memdup.\n * Show a warning message when overriding signal handler for\n * threading suspension.\n * Fix the build on RISC-V with GCC 11.\n * Fix several crashes and rendering issues.\n * Security fixes: CVE-2021-1788, CVE-2021-1844, CVE-2021-1871\n - Update in version 2.30.6 (bsc#1184262):\n * Update user agent quirks again for Google Docs and Google Drive.\n * Fix several crashes and rendering issues.\n * Security fixes: CVE-2020-27918, CVE-2020-29623, CVE-2021-1765\n CVE-2021-1789, CVE-2021-1799, CVE-2021-1801, CVE-2021-1870.\n - Update _constraints for armv6/armv7 (bsc#1182719)\n - restore NPAPI plugin support which was removed in 2.32.0\n\n This update was imported from the SUSE:SLE-15-SP2:Update update project.\n\n\nPatch Instructions:\n\n To install this openSUSE Security Update use the SUSE recommended installation methods\n like YaST online_update or \"zypper patch\".\n\n Alternatively you can run the command listed for your product:\n\n - openSUSE Leap 15.2:\n\n zypper in -t patch openSUSE-2021-637=1", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-05-01T00:00:00", "type": "suse", "title": "Security update for webkit2gtk3 (important)", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-27918", "CVE-2020-29623", "CVE-2021-1765", "CVE-2021-1788", "CVE-2021-1789", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1844", "CVE-2021-1870", "CVE-2021-1871"], "modified": "2021-05-01T00:00:00", "id": "OPENSUSE-SU-2021:0637-1", "href": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/PLZ5MXMQE5PW2OZS4ZK2IAEG3Y3AFJVD/", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-04-18T12:39:59", "description": "An update that fixes two vulnerabilities is now available.\n\nDescription:\n\n This update for pcre fixes the following issues:\n\n Update pcre to version 8.45:\n\n - CVE-2020-14155: Fixed integer overflow via a large number after a '(?C'\n substring (bsc#1172974).\n - CVE-2019-20838: Fixed buffer over-read in JIT compiler (bsc#1172973)\n\n\nPatch Instructions:\n\n To install this openSUSE Security Update use the SUSE recommended installation methods\n like YaST online_update or \"zypper patch\".\n\n Alternatively you can run the command listed for your product:\n\n - openSUSE Leap 15.3:\n\n zypper in -t patch openSUSE-SLE-15.3-2021-3529=1", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-10-27T00:00:00", "type": "suse", "title": "Security update for pcre (moderate)", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-20838", "CVE-2020-14155"], "modified": "2021-10-27T00:00:00", "id": "OPENSUSE-SU-2021:3529-1", "href": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/DOG6FED4Y3TBAFL2V2XUUC43MKZLFGH3/", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2022-11-06T19:34:23", "description": "An update that fixes two vulnerabilities is now available.\n\nDescription:\n\n This update for pcre fixes the following issues:\n\n Update pcre to version 8.45:\n\n - CVE-2020-14155: Fixed integer overflow via a large number after a '(?C'\n substring (bsc#1172974).\n - CVE-2019-20838: Fixed buffer over-read in JIT compiler (bsc#1172973)\n\n This update was imported from the SUSE:SLE-15:Update update project.\n\n\nPatch Instructions:\n\n To install this openSUSE Security Update use the SUSE recommended installation methods\n like YaST online_update or \"zypper patch\".\n\n Alternatively you can run the command listed for your product:\n\n - openSUSE Leap 15.2:\n\n zypper in -t patch openSUSE-2021-1441=1", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-11-02T00:00:00", "type": "suse", "title": "Security update for pcre (moderate)", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-20838", "CVE-2020-14155"], "modified": "2021-11-02T00:00:00", "id": "OPENSUSE-SU-2021:1441-1", "href": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/4ANBRV4PU5AWEEYUWZYBLJCQBG3AHEGD/", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "fedora": [{"lastseen": "2023-06-06T15:26:43", "description": "WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. This package contains WebKit2 based WebKitGTK for GTK 3. ", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-03-29T00:18:51", "type": "fedora", "title": "[SECURITY] Fedora 34 Update: webkit2gtk3-2.32.0-1.fc34", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-27918", "CVE-2020-29623", "CVE-2021-1765", "CVE-2021-1788", "CVE-2021-1789", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1844", "CVE-2021-1870", "CVE-2021-1871"], "modified": "2021-03-29T00:18:51", "id": "FEDORA:7E63530C02C9", "href": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/EQ3U3VBSOJB46WCO66TEWE5OAXLTU3YW/", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-06T15:26:43", "description": "WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. This package contains WebKit2 based WebKitGTK for GTK 3. ", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-04-04T01:09:35", "type": "fedora", "title": "[SECURITY] Fedora 33 Update: webkit2gtk3-2.32.0-1.fc33", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-27918", "CVE-2020-29623", "CVE-2021-1765", "CVE-2021-1788", "CVE-2021-1789", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1844", "CVE-2021-1870", "CVE-2021-1871"], "modified": "2021-04-04T01:09:35", "id": "FEDORA:997C53060987", "href": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-06T15:26:43", "description": "WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. This package contains WebKit2 based WebKitGTK for GTK 3. ", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-04-11T14:02:06", "type": "fedora", "title": "[SECURITY] Fedora 32 Update: webkit2gtk3-2.30.6-1.fc32", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-27918", "CVE-2020-29623", "CVE-2021-1765", "CVE-2021-1789", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1870"], "modified": "2021-04-11T14:02:06", "id": "FEDORA:40E0330A072B", "href": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/JN6ZOD62CTO54CHTMJTHVEF6R2Y532TJ/", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}], "mageia": [{"lastseen": "2023-06-06T16:28:10", "description": "The webkit2 package has been updated to version 2.32.0, fixing several security issues and other bugs. \n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-04-12T19:59:59", "type": "mageia", "title": "Updated webkit2 packages fix security vulnerabilities\n", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-27918", "CVE-2020-29623", "CVE-2020-9947", "CVE-2021-1765", "CVE-2021-1788", "CVE-2021-1789", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1844", "CVE-2021-1870", "CVE-2021-1871"], "modified": "2021-04-12T19:59:59", "id": "MGASA-2021-0181", "href": "https://advisories.mageia.org/MGASA-2021-0181.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}], "debian": [{"lastseen": "2021-10-21T17:57:11", "description": "- -------------------------------------------------------------------------\nDebian Security Advisory DSA-4877-1 security@debian.org\nhttps://www.debian.org/security/ Alberto Garcia\nMarch 27, 2021 https://www.debian.org/security/faq\n- -------------------------------------------------------------------------\n\nPackage : webkit2gtk\nCVE ID : CVE-2020-27918 CVE-2020-29623 CVE-2021-1765 CVE-2021-1789\n CVE-2021-1799 CVE-2021-1801 CVE-2021-1870\n\nThe following vulnerabilities have been discovered in the webkit2gtk\nweb engine:\n\nCVE-2020-27918\n\n Liu Long discovered that processing maliciously crafted web\n content may lead to arbitrary code execution.\n\nCVE-2020-29623\n\n Simon Hunt discovered that users may be unable to fully delete\n their browsing history under some circumstances.\n\nCVE-2021-1765\n\n Eliya Stein discovered that maliciously crafted web content may\n violate iframe sandboxing policy.\n\nCVE-2021-1789\n\n @S0rryMybad discovered that processing maliciously crafted web\n content may lead to arbitrary code execution.\n\nCVE-2021-1799\n\n Gregory Vishnepolsky, Ben Seri and Samy Kamkar discovered that a\n malicious website may be able to access restricted ports on\n arbitrary servers.\n\nCVE-2021-1801\n\n Eliya Stein discovered that processing maliciously crafted web\n content may lead to arbitrary code execution.\n\nCVE-2021-1870\n\n An anonymous researcher discovered that processing maliciously\n crafted web content may lead to arbitrary code execution.\n\nFor the stable distribution (buster), these problems have been fixed in\nversion 2.30.6-1~deb10u1.\n\nWe recommend that you upgrade your webkit2gtk packages.\n\nFor the detailed security status of webkit2gtk please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/webkit2gtk\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-03-27T06:41:31", "type": "debian", "title": "[SECURITY] [DSA 4877-1] webkit2gtk security update", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-27918", "CVE-2020-29623", "CVE-2021-1765", "CVE-2021-1789", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1870"], "modified": "2021-03-27T06:41:31", "id": "DEBIAN:DSA-4877-1:95C13", "href": "https://lists.debian.org/debian-security-announce/2021/msg00058.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-07T14:37:34", "description": "- -------------------------------------------------------------------------\nDebian Security Advisory DSA-4877-1 security@debian.org\nhttps://www.debian.org/security/ Alberto Garcia\nMarch 27, 2021 https://www.debian.org/security/faq\n- -------------------------------------------------------------------------\n\nPackage : webkit2gtk\nCVE ID : CVE-2020-27918 CVE-2020-29623 CVE-2021-1765 CVE-2021-1789\n CVE-2021-1799 CVE-2021-1801 CVE-2021-1870\n\nThe following vulnerabilities have been discovered in the webkit2gtk\nweb engine:\n\nCVE-2020-27918\n\n Liu Long discovered that processing maliciously crafted web\n content may lead to arbitrary code execution.\n\nCVE-2020-29623\n\n Simon Hunt discovered that users may be unable to fully delete\n their browsing history under some circumstances.\n\nCVE-2021-1765\n\n Eliya Stein discovered that maliciously crafted web content may\n violate iframe sandboxing policy.\n\nCVE-2021-1789\n\n @S0rryMybad discovered that processing maliciously crafted web\n content may lead to arbitrary code execution.\n\nCVE-2021-1799\n\n Gregory Vishnepolsky, Ben Seri and Samy Kamkar discovered that a\n malicious website may be able to access restricted ports on\n arbitrary servers.\n\nCVE-2021-1801\n\n Eliya Stein discovered that processing maliciously crafted web\n content may lead to arbitrary code execution.\n\nCVE-2021-1870\n\n An anonymous researcher discovered that processing maliciously\n crafted web content may lead to arbitrary code execution.\n\nFor the stable distribution (buster), these problems have been fixed in\nversion 2.30.6-1~deb10u1.\n\nWe recommend that you upgrade your webkit2gtk packages.\n\nFor the detailed security status of webkit2gtk please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/webkit2gtk\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-03-27T06:41:31", "type": "debian", "title": "[SECURITY] [DSA 4877-1] webkit2gtk security update", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-27918", "CVE-2020-29623", "CVE-2021-1765", "CVE-2021-1789", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1870"], "modified": "2021-03-27T06:41:31", "id": "DEBIAN:DSA-4877-1:61845", "href": "https://lists.debian.org/debian-security-announce/2021/msg00058.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-07T14:34:08", "description": "- -------------------------------------------------------------------------\nDebian Security Advisory DSA-4923-1 security@debian.org\nhttps://www.debian.org/security/ Alberto Garcia\nMay 30, 2021 https://www.debian.org/security/faq\n- -------------------------------------------------------------------------\n\nPackage : webkit2gtk\nCVE ID : CVE-2021-1788 CVE-2021-1844 CVE-2021-1871\n\nThe following vulnerabilities have been discovered in the webkit2gtk\nweb engine:\n\nCVE-2021-1788\n\n Francisco Alonso discovered that processing maliciously crafted\n web content may lead to arbitrary code execution.\n\nCVE-2021-1844\n\n Clement Lecigne and Alison Huffman discovered that processing\n maliciously crafted web content may lead to arbitrary code\n execution.\n\nCVE-2021-1871\n\n An anonymous researcher discovered that a remote attacker may be\n able to cause arbitrary code execution.\n\nFor the stable distribution (buster), these problems have been fixed in\nversion 2.32.1-1~deb10u1.\n\nWe recommend that you upgrade your webkit2gtk packages.\n\nFor the detailed security status of webkit2gtk please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/webkit2gtk\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-05-30T15:49:51", "type": "debian", "title": "[SECURITY] [DSA 4923-1] webkit2gtk security update", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1788", "CVE-2021-1844", "CVE-2021-1871"], "modified": "2021-05-30T15:49:51", "id": "DEBIAN:DSA-4923-1:EA1C3", "href": "https://lists.debian.org/debian-security-announce/2021/msg00105.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}], "archlinux": [{"lastseen": "2023-06-06T15:10:08", "description": "Arch Linux Security Advisory ASA-202103-24\n==========================================\n\nSeverity: High\nDate : 2021-03-25\nCVE-ID : CVE-2020-27918 CVE-2020-29623 CVE-2021-1765 CVE-2021-1789\nCVE-2021-1799 CVE-2021-1801 CVE-2021-1870\nPackage : webkit2gtk\nType : multiple issues\nRemote : Yes\nLink : https://security.archlinux.org/AVG-1721\n\nSummary\n=======\n\nThe package webkit2gtk before version 2.30.6-1 is vulnerable to\nmultiple issues including arbitrary code execution, access restriction\nbypass, information disclosure and sandbox escape.\n\nResolution\n==========\n\nUpgrade to 2.30.6-1.\n\n# pacman -Syu \"webkit2gtk>=2.30.6-1\"\n\nThe problems have been fixed upstream in version 2.30.6.\n\nWorkaround\n==========\n\nNone.\n\nDescription\n===========\n\n- CVE-2020-27918 (arbitrary code execution)\n\nA security issue was discovered in WebKitGTK before 2.30.6 and WPE\nWebKit before 2.30.6. Processing maliciously crafted web content may\nlead to arbitrary code execution.\n\n- CVE-2020-29623 (information disclosure)\n\nA security issue was discovered in WebKitGTK before 2.30.6 and WPE\nWebKit before 2.30.6. \u201cClear History and Website Data\u201d did not clear\nthe history in some circumstances.\n\n- CVE-2021-1765 (sandbox escape)\n\nA security issue was discovered in WebKitGTK before 2.30.6 and WPE\nWebKit before 2.30.6. Maliciously crafted web content may violate\niframe sandboxing policy.\n\n- CVE-2021-1789 (arbitrary code execution)\n\nA security issue was discovered in WebKitGTK before 2.30.6 and WPE\nWebKit before 2.30.6. Processing maliciously crafted web content may\nlead to arbitrary code execution.\n\n- CVE-2021-1799 (access restriction bypass)\n\nA security issue was discovered in WebKitGTK before 2.30.6 and WPE\nWebKit before 2.30.6. A malicious website may be able to access\nrestricted ports on arbitrary servers.\n\n- CVE-2021-1801 (sandbox escape)\n\nA security issue was discovered in WebKitGTK before 2.30.6 and WPE\nWebKit before 2.30.6. Maliciously crafted web content may violate\niframe sandboxing policy.\n\n- CVE-2021-1870 (arbitrary code execution)\n\nA security issue was discovered in WebKitGTK before 2.30.6 and WPE\nWebKit before 2.30.6. A remote attacker may be able to cause arbitrary\ncode execution. Apple is aware of a report that this issue may have\nbeen actively exploited.\n\nImpact\n======\n\nA remote attacker is able to use maliciously crafted web content to\nexecute arbitrary code or violate the iframe policy. A malicious server\ncould access restricted ports.\n\nReferences\n==========\n\nhttps://webkitgtk.org/security/WSA-2021-0002.html#CVE-2020-27918\nhttps://webkitgtk.org/security/WSA-2021-0002.html#CVE-2020-29623\nhttps://webkitgtk.org/security/WSA-2021-0002.html#CVE-2021-1765\nhttps://webkitgtk.org/security/WSA-2021-0002.html#CVE-2021-1789\nhttps://webkitgtk.org/security/WSA-2021-0002.html#CVE-2021-1799\nhttps://webkitgtk.org/security/WSA-2021-0002.html#CVE-2021-1801\nhttps://webkitgtk.org/security/WSA-2021-0002.html#CVE-2021-1870\nhttps://security.archlinux.org/CVE-2020-27918\nhttps://security.archlinux.org/CVE-2020-29623\nhttps://security.archlinux.org/CVE-2021-1765\nhttps://security.archlinux.org/CVE-2021-1789\nhttps://security.archlinux.org/CVE-2021-1799\nhttps://security.archlinux.org/CVE-2021-1801\nhttps://security.archlinux.org/CVE-2021-1870", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-03-25T00:00:00", "type": "archlinux", "title": "[ASA-202103-24] webkit2gtk: multiple issues", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-27918", "CVE-2020-29623", "CVE-2021-1765", "CVE-2021-1789", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1870"], "modified": "2021-03-25T00:00:00", "id": "ASA-202103-24", "href": "https://security.archlinux.org/ASA-202103-24", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-06T15:10:10", "description": "Arch Linux Security Advisory ASA-202103-25\n==========================================\n\nSeverity: High\nDate : 2021-03-25\nCVE-ID : CVE-2020-27918 CVE-2020-29623 CVE-2021-1765 CVE-2021-1789\nCVE-2021-1799 CVE-2021-1801 CVE-2021-1870\nPackage : wpewebkit\nType : multiple issues\nRemote : Yes\nLink : https://security.archlinux.org/AVG-1722\n\nSummary\n=======\n\nThe package wpewebkit before version 2.30.6-1 is vulnerable to multiple\nissues including arbitrary code execution, access restriction bypass,\ninformation disclosure and sandbox escape.\n\nResolution\n==========\n\nUpgrade to 2.30.6-1.\n\n# pacman -Syu \"wpewebkit>=2.30.6-1\"\n\nThe problems have been fixed upstream in version 2.30.6.\n\nWorkaround\n==========\n\nNone.\n\nDescription\n===========\n\n- CVE-2020-27918 (arbitrary code execution)\n\nA security issue was discovered in WebKitGTK before 2.30.6 and WPE\nWebKit before 2.30.6. Processing maliciously crafted web content may\nlead to arbitrary code execution.\n\n- CVE-2020-29623 (information disclosure)\n\nA security issue was discovered in WebKitGTK before 2.30.6 and WPE\nWebKit before 2.30.6. \u201cClear History and Website Data\u201d did not clear\nthe history in some circumstances.\n\n- CVE-2021-1765 (sandbox escape)\n\nA security issue was discovered in WebKitGTK before 2.30.6 and WPE\nWebKit before 2.30.6. Maliciously crafted web content may violate\niframe sandboxing policy.\n\n- CVE-2021-1789 (arbitrary code execution)\n\nA security issue was discovered in WebKitGTK before 2.30.6 and WPE\nWebKit before 2.30.6. Processing maliciously crafted web content may\nlead to arbitrary code execution.\n\n- CVE-2021-1799 (access restriction bypass)\n\nA security issue was discovered in WebKitGTK before 2.30.6 and WPE\nWebKit before 2.30.6. A malicious website may be able to access\nrestricted ports on arbitrary servers.\n\n- CVE-2021-1801 (sandbox escape)\n\nA security issue was discovered in WebKitGTK before 2.30.6 and WPE\nWebKit before 2.30.6. Maliciously crafted web content may violate\niframe sandboxing policy.\n\n- CVE-2021-1870 (arbitrary code execution)\n\nA security issue was discovered in WebKitGTK before 2.30.6 and WPE\nWebKit before 2.30.6. A remote attacker may be able to cause arbitrary\ncode execution. Apple is aware of a report that this issue may have\nbeen actively exploited.\n\nImpact\n======\n\nA remote attacker is able to use maliciously crafted web content to\nexecute arbitrary code or violate the iframe policy. A malicious server\ncould access restricted ports.\n\nReferences\n==========\n\nhttps://webkitgtk.org/security/WSA-2021-0002.html#CVE-2020-27918\nhttps://webkitgtk.org/security/WSA-2021-0002.html#CVE-2020-29623\nhttps://webkitgtk.org/security/WSA-2021-0002.html#CVE-2021-1765\nhttps://webkitgtk.org/security/WSA-2021-0002.html#CVE-2021-1789\nhttps://webkitgtk.org/security/WSA-2021-0002.html#CVE-2021-1799\nhttps://webkitgtk.org/security/WSA-2021-0002.html#CVE-2021-1801\nhttps://webkitgtk.org/security/WSA-2021-0002.html#CVE-2021-1870\nhttps://security.archlinux.org/CVE-2020-27918\nhttps://security.archlinux.org/CVE-2020-29623\nhttps://security.archlinux.org/CVE-2021-1765\nhttps://security.archlinux.org/CVE-2021-1789\nhttps://security.archlinux.org/CVE-2021-1799\nhttps://security.archlinux.org/CVE-2021-1801\nhttps://security.archlinux.org/CVE-2021-1870", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-03-25T00:00:00", "type": "archlinux", "title": "[ASA-202103-25] wpewebkit: multiple issues", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-27918", "CVE-2020-29623", "CVE-2021-1765", "CVE-2021-1789", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1870"], "modified": "2021-03-25T00:00:00", "id": "ASA-202103-25", "href": "https://security.archlinux.org/ASA-202103-25", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}], "ubuntu": [{"lastseen": "2023-06-06T15:37:46", "description": "## Releases\n\n * Ubuntu 20.10 \n * Ubuntu 20.04 LTS\n * Ubuntu 18.04 ESM\n\n## Packages\n\n * webkit2gtk \\- Web content engine library for GTK+\n\nA large number of security issues were discovered in the WebKitGTK Web and \nJavaScript engines. If a user were tricked into viewing a malicious \nwebsite, a remote attacker could exploit a variety of issues related to web \nbrowser security, including cross-site scripting attacks, denial of service \nattacks, and arbitrary code execution.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-03-29T00:00:00", "type": "ubuntu", "title": "WebKitGTK vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-27918", "CVE-2020-29623", "CVE-2021-1765", "CVE-2021-1789", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1870"], "modified": "2021-03-29T00:00:00", "id": "USN-4894-1", "href": "https://ubuntu.com/security/notices/USN-4894-1", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-07T15:44:32", "description": "## Releases\n\n * Ubuntu 22.04 LTS\n * Ubuntu 21.10 \n * Ubuntu 20.04 LTS\n * Ubuntu 18.04 ESM\n * Ubuntu 16.04 ESM\n * Ubuntu 14.04 ESM\n\n## Packages\n\n * pcre3 \\- Perl 5 Compatible Regular Expression Library\n\nYunho Kim discovered that PCRE incorrectly handled memory when \nhandling certain regular expressions. An attacker could possibly use \nthis issue to cause applications using PCRE to expose sensitive \ninformation. This issue only affects Ubuntu 18.04 LTS, \nUbuntu 20.04 LTS, Ubuntu 21.10 and Ubuntu 22.04 LTS. (CVE-2019-20838)\n\nIt was discovered that PCRE incorrectly handled memory when \nhandling certain regular expressions. An attacker could possibly use \nthis issue to cause applications using PCRE to have unexpected \nbehavior. This issue only affects Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, \nUbuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-14155)\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2022-05-17T00:00:00", "type": "ubuntu", "title": "PCRE vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-20838", "CVE-2020-14155"], "modified": "2022-05-17T00:00:00", "id": "USN-5425-1", "href": "https://ubuntu.com/security/notices/USN-5425-1", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}, {"lastseen": "2023-05-27T15:01:44", "description": "## Releases\n\n * Ubuntu 20.10 \n * Ubuntu 20.04 LTS\n * Ubuntu 18.04 ESM\n\n## Packages\n\n * webkit2gtk \\- Web content engine library for GTK+\n\nA large number of security issues were discovered in the WebKitGTK Web and \nJavaScript engines. If a user were tricked into viewing a malicious \nwebsite, a remote attacker could exploit a variety of issues related to web \nbrowser security, including cross-site scripting attacks, denial of service \nattacks, and arbitrary code execution.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-05-10T00:00:00", "type": "ubuntu", "title": "WebKitGTK vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1788", "CVE-2021-1844", "CVE-2021-1871"], "modified": "2021-05-10T00:00:00", "id": "USN-4939-1", "href": "https://ubuntu.com/security/notices/USN-4939-1", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2023-06-06T15:45:55", "description": "## Releases\n\n * Ubuntu 20.04 LTS\n\n## Packages\n\n * sqlite3 \\- C library that implements an SQL database engine\n\nIt was discovered that SQLite incorrectly handled query-flattener \noptimization. An attacker could use this issue to cause SQLite to crash, \nresulting in a denial of service, or possibly execute arbitrary code.\n", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "baseScore": 5.5, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2020-07-27T00:00:00", "type": "ubuntu", "title": "SQLite vulnerability", "bulletinFamily": "unix", "cvss2": {"severity": "LOW", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 2.1, "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-15358"], "modified": "2020-07-27T00:00:00", "id": "USN-4438-1", "href": "https://ubuntu.com/security/notices/USN-4438-1", "cvss": {"score": 2.1, "vector": "AV:L/AC:L/Au:N/C:N/I:N/A:P"}}], "threatpost": [{"lastseen": "2021-01-27T12:35:42", "description": "Apple continues to put out potential security fires by patching zero-day vulnerabilities, releasing an emergency update this week to patch three more recently discovered in iOS after a major software update in November already fixed three that were being actively exploited.\n\nThe newly patched bugs are part of a [security update](<https://support.apple.com/en-us/HT212146>) released Tuesday for iOS 14.4 and iPadOS 14.4. One bug, tracked as CVE-2021-1782, was found in the OS kernel, while the other two\u2013CVE-2021-1870 and CVE-2021-1871\u2013were discovered in the WebKit browser engine.\n\nThe most recent vulnerabilities apparently weren\u2019t known when Apple released iOS 14.2 and iPadOS 14.2, a comprehensive update that patched a total of 24 vulnerabilities [back in November](<https://threatpost.com/apple-patches-bugs-zero-days/161010/>). That update included fixes for three zero-day flaws discovered by the Google Project Zero team that were actively being exploited in the wild. \n[](<https://threatpost.com/newsletter-sign/>)Attackers also may be actively taking advantage of the latest bugs, according to Apple. The company described the kernel flaw as a \u201ca race condition\u201d that the update addresses \u201cwith improved locking.\u201d If exploited, the vulnerability can allow a malicious application to elevate privileges.\n\nThe WebKit vulnerabilities are both logic issues that the update addresses with improved restrictions, according to Apple. Exploiting these flaws would allow a remote attacker \u201cto cause arbitrary code execution,\u201d the company said.\n\nAll the zero-days and thus the fixes affect iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation), according to Apple. Security experts believe the three are part of an exploit chain attackers can use to escalate privileges and compromise a device after its unsuspecting user falls victim to a malicious website leveraging the WebKit flaw.\n\nAs is custom, however, Apple did not go into detail about how the bugs are being used in attacks, as it doesn\u2019t typically reveal this type of info until most of the affected devices are patched.\n\nThe proliferation of iPhones across the world makes news of any Apple iOS zero-day a security threat to its hundreds of millions of users, and thus a very big deal. In fact, four nation-state-backed advanced persistent threats (APTs) used a zero-day iPhone exploit in a highly publicized [espionage hack](<https://threatpost.com/zero-click-apple-zero-day-pegasus-spy-attack/162515/>) against Al Jazeera journalists, producers, anchors and executives late last year.\n\nPredictably, numerous [iPhone users](<https://twitter.com/Gurgling_MrD/status/1354191338221285377>), [tech professionals](<https://twitter.com/GustavoCols/status/1354160831366361089>) and [security experts](<https://twitter.com/Riazjavedbutt/status/1354307444961406976>) took to Twitter as news of the latest spate of iOS zero-days broke to warn iPhone users to update their devices immediately.\n\n\u201ciOS release notes are always comforting when you have firsts like this,\u201d [tweeted](<https://twitter.com/_DanielSinclair/status/1354299572177268737>) one iPhone user [Daniel Sinclair](<https://twitter.com/_DanielSinclair/status/1348631971480666112>) sarcastically. \u201c3 zero-days actively exploited in the wild. 2 involving WebKit.\u201d\n\nSinclair also [tweeted](<https://twitter.com/_DanielSinclair/status/1348631971480666112>) earlier in the month that his iPhone \u201cinexplicably became bricked,\u201d though it\u2019s unclear if that issue was related to the recently discovered zero-days.\n", "cvss3": {}, "published": "2021-01-27T12:21:28", "type": "threatpost", "title": "Apple Patches Three Actively Exploited Zero-Days, Part of iOS Emergency Update", "bulletinFamily": "info", "cvss2": {}, "cvelist": ["CVE-2021-1782", "CVE-2021-1870", "CVE-2021-1871"], "modified": "2021-01-27T12:21:28", "id": "THREATPOST:233067E74345C95478CA096160DFCE43", "href": "https://threatpost.com/apple-patches-zero-days-ios-emergency-update/163374/", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2021-03-09T16:00:51", "description": "Apple is rolling out fixes for a high-severity vulnerability in its WebKit browser engine that, if exploited, could allow remote attackers to completely compromise affected systems.\n\nThe mobile giant released security updates on Monday for the flaw, for its Safari browser, as well as devices running macOS, watchOS and iOS.\n\nThe bug (CVE-2021-1844) ranks 7.7 out of 10 on the CVSS vulnerability-severity scale, making it high-severity. An exploit would allow an attacker to remotely execute code and ultimate take over the system.\n\n[](<https://threatpost.com/newsletter-sign/>)\n\nApple on Monday urged affected device users to update as soon as possible: \u201cKeeping your software up-to-date is one of the most important things you can do to maintain your Apple product\u2019s security,\u201d said the company on Monday.\n\n## **What is Apple WebKit?**\n\nThe WebKit browser engine was developed by Apple for use in its Safari web browser \u2013 however, it is also used by Apple Mail, the App Store, and various apps on the macOS and iOS operating systems. The vulnerability stems from a memory-corruption issue in WebKit; [this type of bug occurs](<https://threatpost.com/memory-corruption-mitigations-doing-their-job/124728/>) when the contents of a memory location are modified in a way that exceeds the intention of the original program/language constructs \u2013 allowing attackers to execute arbitrary code.\n\nIn the case of this specific flaw, if WebKit processes specially-crafted, malicious web content, it could lead to successful exploitation, according to Apple.\n\nIn a real-world attack, \u201ca remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system,\u201d [according to an advisory.](<https://www.cybersecurity-help.cz/vdb/SB2021030901>)\n\n## **What Apple Devices Are Affected?**\n\nApple pushed the updates out across a variety of devices. Updates are available via [macOS Big Sur 11.2.3](<https://support.apple.com/en-us/HT212220>); [watchOS 7.3.2](<https://support.apple.com/en-us/HT212222>) (for the Apple Watch series 3 or later); and[ iOS 14.4.1 and iPadOS 14.4.1](<https://support.apple.com/en-us/HT212221>) (for the iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch 7th generation).\n\nSecurity fixes are also available[ via Safari 14.0.3](<https://support.apple.com/en-us/HT212223>) for macOS Catalina and macOS Mojave: \u201cAfter installing this update, the build number for Safari 14.0.3 is 14610.4.3.1.7 on macOS Mojave and 15610.4.3.1.7 on macOS Catalina,\u201d noted Apple. Apple users [can visit this page](<https://support.apple.com/en-us/HT201222>) to learn how to update their devices.\n\nCl\u00e9ment Lecigne of Google\u2019s Threat Analysis Group and Alison Huffman of Microsoft Browser Vulnerability Research were credited with discovering the flaw.\n\n## **Apple Security Updates**\n\nIt\u2019s only the latest bug to be found in WebKit: Apple in January released an emergency update that patched three [recently discovered bugs in iOS](<https://threatpost.com/apple-patches-zero-days-ios-emergency-update/163374/>). Two of these \u2013 CVE-2021-1870 and CVE-2021-1871 \u2013 were discovered in WebKit (while the third, tracked as CVE-2021-1782, was found in the OS kernel).\n\nThe WebKit vulnerabilities are both logic issues that the update addresses with improved restrictions, according to Apple. Exploiting these flaws would allow a remote attacker \u201cto cause arbitrary code execution,\u201d the company said.\n\nThe security updates also come weeks after [Apple released its 2021 Platform Security guide](<https://threatpost.com/apple-2021-platform-security-guide/164094/>), outlining its current and year-ahead agenda for its device hardware, software and silicon security. The deep dive report covered iOS 14, macOS Big Sur, Apple Silicon and iCloud Drive security.\n\n**_Check out our free _****_[upcoming live webinar events](<https://threatpost.com/category/webinars/>)_****_ \u2013 unique, dynamic discussions with cybersecurity experts and the Threatpost community:_** \n\u00b7 March 24: **Economics of 0-Day Disclosures: The Good, Bad and Ugly** ([Learn more and register!](<https://threatpost.com/webinars/economics-of-0-day-disclosures-the-good-bad-and-ugly/>)) \n\u00b7 April 21: **Underground Markets: A Tour of the Dark Economy** ([Learn more and register!](<https://threatpost.com/webinars/underground-markets-a-tour-of-the-dark-economy/>))\n", "cvss3": {}, "published": "2021-03-09T15:58:15", "type": "threatpost", "title": "Apple Plugs Severe WebKit Remote Code-Execution Hole", "bulletinFamily": "info", "cvss2": {}, "cvelist": ["CVE-2021-1782", "CVE-2021-1844", "CVE-2021-1870", "CVE-2021-1871"], "modified": "2021-03-09T15:58:15", "id": "THREATPOST:8372A3E62BAD4992E997A34240A7EB45", "href": "https://threatpost.com/apple-webkit-remote-code-execution/164595/", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2022-01-25T22:31:48", "description": "A new family of cyber-espionage malware targeting macOS and delivered via a Safari exploit was used against politically active, pro-democracy residents of Hong Kong, in August watering-hole attacks initially discovered by Google TAG, researchers said on Tuesday.\n\nThe [watering-hole attacks](<https://threatpost.com/mac-zero-day-apple-hong-kong/176300/>) \u2013 which [TAG reported](<https://blog.google/threat-analysis-group/analyzing-watering-hole-campaign-using-macos-exploits/>) to Apple that same month \u2013 were serving an in-the-wild malware that exploited what was then a zero-day flaw to install a backdoor on the iOS and macOS devices of users who visited Hong Kong-based media and pro-democracy sites.\n\nAs [TAG reported](<https://blog.google/threat-analysis-group/analyzing-watering-hole-campaign-using-macos-exploits/>) in November, a zero-day XNU privilege-escalation vulnerability ([CVE-2021-30869](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30869>)) that was then unpatched in macOS Catalina led to the installation of a previously unreported backdoor on victims\u2019 macOS and iOS systems.\n\nIn a [report](<https://www.welivesecurity.com/2022/01/25/watering-hole-deploys-new-macos-malware-dazzlespy-asia/>) published Tuesday, ESET researchers, who\u2019d been investigating the campaign prior to TAG\u2019s November post, revealed new details about the backdoor, the campaign\u2019s targets, the malware employed \u2013 namely, a WebKit exploit used to compromise Mac users \u2013 and how victims fell into the trap to begin with.\n\nThe novel piece of the puzzle that ESET described in Tuesday\u2019s post is DazzleSpy: a new, full-featured backdoor put out by unknown \u2013 but technically adroit \u2013 operators, they said.\n\nThe list of commands it accepts is long: The malware can search for specific files to exfiltrate, enumerate files in the Desktop, Downloads, and Documents folders; execute shell commands; enumerate running processes; steal, rename or move files; log mouse events; observe, start or end remote sessions; and perform the tasks needed to exploit the CVE-2019-8526 vulnerability.\n\nResearchers also found it notable that DazzleSpy enforces end-to-end encryption and that the backdoor abstains from communicating with its command-and-control (C2) server if anyone tries to eavesdrop, by inserting a TLS-inspection proxy between the compromised system and the C2 server.\n\n## The Swamps That Sucked in Hong Kong Activists\n\nThe first stage of the attack chain was to compromise two sites so as to propagate the exploits, ESET explained:\n\n 1. A fake website targeting Hong Kong activists, as [reported](<https://twitter.com/felixaime/status/1459452296321024003>) by Felix Aim\u00e9 from SEKOIA.IO, with a domain \u2013 fightforhk[.]com \u2013 only registered on Oct. 19, and since taken down. It was rigged with a malicious iframe, as shown below.\n 2. The legitimate but compromised radio-station site of the online, Hong Kong, pro-democracy radio station [D100,](<https://en.wikipedia.org/wiki/D100_Radio>) which was discovered serving up the same exploit by Google TAG in August. Similar to fightforhk[.com], the radio station\u2019s compromised site (shown below) similarly injected an iframe into pages served by bc.d100[.]net \u2013 the section of the website used by subscribers \u2013 between Sept. 30 and Nov. 4.\n\n[](<https://media.threatpost.com/wp-content/uploads/sites/103/2022/01/25113452/Figure-1.-fightforhk.com-as-archived-by-the-Wayback-Machine-on-November-13th.png>)\n\nThe fightforhk[.]com watering-hole propagating domain, as archived by the Wayback Machine on Nov. 13 and shared by ESET.\n\n[](<https://media.threatpost.com/wp-content/uploads/sites/103/2022/01/25113857/Figure-2.-Excerpt-of-https-bc.d100.-net-Product-Subscription-on-November-4th-2021-e1643128751655.png>)\n\nExcerpt of https://bc.d100[.]net/Product/Subscription on Nov. 4, 2021. Source: ESET.\n\nNext, the tampered-with code loads a [Mach-O](<https://en.wikipedia.org/wiki/Mach-O>) executable file in memory by leveraging a remote code execution (RCE) bug in WebKit that Apple fixed in February 2021 ([CVE-2021-1789](<https://support.apple.com/en-us/HT212147>)). \n\n\u201cThe exploit used to gain code execution in the browser is quite complex and had more than 1,000 lines of code once formatted nicely,\u201d ESET researchers noted.\n\n## From Privilege Escalation to Root\n\nAfter the exploit gains code execution, it loads Mach-O into memory and executes it, exploiting a [previously described](<https://github.com/wangtielei/Slides/blob/main/zer0con21.pdf>) local privilege-escalation vulnerability tracked as [CVE-2021-30869](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30869>) to run the next stage as root. A call then goes out to a function called \u201cadjust_port_type,\u201d which changes the internal type of a Mach port \u2013 a change that \u201cshouldn\u2019t be possible unless a vulnerability exists,\u201d ESET researchers noted.\n\nA summary of what Mach-O does:\n\n 1. Downloads a file from the URL supplied as an argument\n 2. Decrypts this file using AES-128-EBC and TEA with a custom delta\n 3. Writes the resulting file to $TMPDIR/airportpaird and makes it executable\n 4. Uses the privilege escalation exploit to remove the com.apple.quarantineattribute from the file to avoid asking the user to confirm the launch of the unsigned executable\n 5. Uses the same privilege escalation to launch the next stage with root privileges\n\nIn its November writeup, Google TAG described the infection chain as next downloading a payload called MACMA that fingerprinted victims\u2019 devices, grabbed screen captures, uploaded and downloaded files, executed terminal commands, and committed spying via audio recording and keylogging.\n\nBut visitors to the D100 Radio site were inflicted with a different macOS backdoor that ESET codenamed DazzleSpy: A powerful tool capable of stealing a dizzying array of victims\u2019 data and carrying out complex exploits.\n\n## Who\u2019s Behind the DazzleSpy Backdoor?\n\nGiven the complexity of the campaign\u2019s exploits, ESET says that the operators have \u201cstrong technical capabilities.\u201d The attackers haven\u2019t left a lot of tracks: ESET researchers said they haven\u2019t yet been able to find prior analysis about a local privilege-escalation (LPE) vulnerability used by the exploit, for example, nor anything about the specific WebKit vulnerability used to gain code execution in Safari.\n\nESET did note that the campaign \u2013 with its targeting of politically active, pro-democracy Hong Kong individuals \u2013 resembles one from 2020 where LightSpy iOS malware (described by [TrendMicro](<https://www.trendmicro.com/en_us/research/20/c/operation-poisoned-news--hong-kong-users-targeted-with-mobile-ma.html>) and [Kaspersky](<https://securelist.com/ios-exploit-chain-deploys-lightspy-malware/96407/>)) was distributed in the same way: i.e., by using iframe injection on websites for Hong Kong citizens, leading to a WebKit exploit.\n\nThe malware used in the [2020 watering-hole attacks](<https://threatpost.com/emerging-apt-mounts-mass-iphone-surveillance-campaign/154192/>), the work of a then-new advanced persistent threat (APT) called TwoSail Junk, was similarly designed for use in a mass-targeted attack aimed at deep surveillance and for taking total control of iOS devices.\n\nESET did find a few clues about DazzleSpy\u2019s operators: They noted that the malware contains a number of internal messages in Chinese, for one. As well, \u201conce the malware obtains the current date and time on a compromised computer \u2026 it converts the obtained date to the Asia/Shanghai time zone (aka China Standard Time), before sending it to the C2 server,\u201d they added.\n\nThe operators also aren\u2019t all that concerned about operational security, apparently: \u201cThey have left the username \u2018wangping\u2019 in paths embedded in the binary,\u201d ESET noted, including in paths that reveal this username and internal module names.\n\nWhether the 2020 Hong Kong attacks and those detected in August are coming from the same APT remains to be seen, ESET researchers said. They\u2019re on it, they said, promising to \u201ccontinue to track and report on similar malicious activities.\u201d\n\n_**Check out our free **_[_**upcoming live and on-demand online town halls**_](<https://threatpost.com/category/webinars/>)_** \u2013 unique, dynamic discussions with cybersecurity experts and the Threatpost community.**_\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2022-01-25T18:54:42", "type": "threatpost", "title": "MacOS Malware \u2018DazzleSpy\u2019 Used in Watering-Hole Attacks", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 10.0, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-8526", "CVE-2021-1789", "CVE-2021-30869"], "modified": "2022-01-25T18:54:42", "id": "THREATPOST:E13609652D43E0698E1BBCD2FE20E670", "href": "https://threatpost.com/macos-malware-dazzlespy-watering-hole-attacks/177943/", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2021-05-05T13:57:45", "description": "Apple has issued out-of-band patches for critical security issues affecting iPad, iPhone and iPod, which could allow remote code execution (RCE) and other attacks, completely compromising users\u2019 systems. And, the computing giant thinks all of them may have already been exploited in the wild. \n\nThree of these are zero-day flaws, while one is an expanded patch for a fourth vulnerability. \n\nApple keeps details of security problems close to the vest, \u201cfor our customers\u2019 protection,\u201d saving the blood and guts until after it investigates and manages to pump out patches or new releases. \n\n[](<https://threatpost.com/webinars/fortifying-your-business-against-attacks/?utm_source=ART&utm_medium=ART&utm_campaign=May_Zoho_Webinar>)\n\nJoin Threatpost for \u201c[Fortifying Your Business Against Ransomware, DDoS &amp; Cryptojacking Attacks](<https://threatpost.com/webinars/fortifying-your-business-against-attacks/?utm_source=ART&utm_medium=ART&utm_campaign=May_Zoho_Webinar>)\u201d a LIVE roundtable event on Wednesday, May 12 at 2:00 PM EDT for this FREE webinar sponsored by Zoho ManageEngine.\n\nWhat data it does disclose can be found on its [support page](<https://support.apple.com/en-us/HT201222>). Here\u2019s a summary of the three zero-days: \n\n## **Zero-Day Bugs in WebKit**\n\n * **CVE-2021-30665:** A critical memory-corruption issue in the Safari WebKit engine where \u201cprocessing maliciously crafted web content may lead to arbitrary code execution\u201d was addressed with improved state management. Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation). The bug was reported to Apple by three security researchers, nicknamed yangkang, zerokeeper and bianliang. \n\n * **CVE-2021-30663:** This second flaw is also found in the open-source WebKit browser engine. It\u2019s an integer overflow, reported by an anonymous researcher, that can also lead to RCE. It was addressed with improved input validation. Available for: iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later, and iPod touch (7th generation). \n\n * **CVE-2021-30666:** A buffer-overflow issue was addressed with improved memory handling. Available for: iPhone 5s, iPhone 6, iPhone 6 Plus, iPad Air, iPad mini 2, iPad mini 3, and iPod touch (6th generation)\n\nAnd here are details on the expanded patch for the fourth bug: \n\n## **WebKit Storage**\n\n * **CVE-2021-30661: **A use after free issue was addressed with improved memory management. Available for: iPhone 5s, iPhone 6, iPhone 6 Plus, iPad Air, iPad mini 2, iPad mini 3, and iPod touch (6th generation). This flaw was discovered and reported to the iPhone maker by the security researcher named yangkang, @dnpushme, of Qihoo 360 ATA.\n\nApple\u2019s support page shows that this fourth one was actually patched on Monday last week (April 26) in iOS 14.5 and macOS 11.3, but not in iOS 12. \n\nNaked Security\u2019s Paul Ducklin finds this one [particularly interesting](<https://nakedsecurity.sophos.com/2021/05/04/apple-products-hit-by-fourfecta-of-zero-day-exploits-patch-now/>), and he noted that questions remain. Why wasn\u2019t iOS 12 updated at the same time as iOS 14.5 and macOS 11.3? Did the security hole crop up in the code base after iOS 12 was released, perhaps? \n\nNo, that\u2019s not it: the CVE-2021-30661 and CVE-2021-30666 bugs fixed on Monday only apply to iOS 12. So it remains unclear if the bug exists in recent operating system versions, or not, Ducklin said.\n\n\u201cIs this an old bug from iOS 12 that was carried forward into the current Apple codebase but has still not yet been patched there?\u201d Ducklin pondered. \u201cOr is it a bug that is unique to the older iOS 12 code that doesn\u2019t appear in the more recent operating system releases and can therefore now be considered to have been eliminated everywhere?\u201d\n\nThreatpost has reached out to Apple for comment.\n\n## **Patch Fast!**\n\nPer usual, Apple\u2019s lip is zipped. But one thing\u2019s for sure: Patching as soon as possible is top priority. As it is, the chance for websites passing along \u201cmaliciously crafted web content\u201d is alarming. If you translate Apple\u2019s statement that \u201cprocessing maliciously crafted web content may lead to arbitrary code execution, \u201cyou get a \u201c[drive-by](<https://threatpost.com/google-sites-solarmarket-rat/165396/>), web-based zero-day RCE exploit, according to Ducklin.\n\nIn other words, all you have to do to trigger infection is to visit and view a booby-trapped website. \n\nJohn Kinsella, chief architect at cloud security company Accurics, says this is one of the nastier types of security bugs: one in which the user isn\u2019t required to perform a certain action for an attacker\u2019s success. \u201cPart of the issue here is that it\u2019s not just the browser that a user needs to be careful with,\u201d he told Threatpost in an email on Tuesday. \u201cMany iOS apps are just wrappers around a web application, which would be rendered by WebKit. For example, HTML mail in Apple\u2019s Mail app will be rendered by WebKit, and this app is a hard one to avoid. Even if a user takes advantage of new iOS functionality to replace the default iOS Mail and Safari apps with other mail/browser apps, the underlying HTML rendering engine would still be WebKit-based on Apple\u2019s App Store rules.\u201d\n\nKinsella says that if he\u2019s at all suspicious of something, he won\u2019t open it on a mobile device, but rather on a desktop or laptop, where he has much more control. \u201cThat being said, I know I\u2019m not the average user,\u201d he said. \u201cThe best advice I have is to patch ASAP, and generally be very careful.\u201d\n\nGiven that Apple has acknowledged that these vulnerabilities have already been exploited in the wild, and given the fact that HTML content is so prevalent on mobile devices, Kinsella considers a drive-by RCE like this to be a highly serious issue, though \u201cThe overall security of iOS means this isn\u2019t a complete takeover of the mobile device.\u201d\n\nStill, every extra foothold an attacker can get \u201chelps them further compromise a device,\u201d he said. \u201cThe fact that malicious HTML can compromise something on my wrist doesn\u2019t thrill me. Luckily Apple\u2019s been quite consistent with the reliability of their patches in recent years, so while I may sometimes wait for others to \u2018beta test\u2019 a release, a security patch like this was applied to my devices ASAP.\u201d\n\n## **What is WebKit? The Little Engine That Could**\n\nApple developed the WebKit browser engine to run in its Safari web browser, but it\u2019s also used by Apple Mail, the App Store, and various apps on the macOS and iOS operating systems. This, of course, isn\u2019t the first time that the engine has hit some bumps. \n\nIn January, Apple released an emergency update that patched three iOS[ bugs](<https://threatpost.com/apple-patches-zero-days-ios-emergency-update/163374/>). Two of them (CVE-2021-1870 and CVE-2021-1871 ) were discovered in WebKit (and the third, tracked as CVE-2021-1782, was found in the OS kernel).\n\nMore recently, in March, Apple patched other [severe WebKit RCEs](<https://threatpost.com/apple-webkit-remote-code-execution/164595/>). Similar to Monday\u2019s updates, those WebKit fixes could have allowed remote attackers to completely compromise affected systems.\n\n05-04-2021 14:52 UPDATE: Added input from Accurics\u2019 John Kinsella.\n\n**Join Threatpost for \u201c**[**Fortifying Your Business Against Ransomware, DDoS &amp; Cryptojacking Attacks**](<https://threatpost.com/webinars/fortifying-your-business-against-attacks/?utm_source=ART&utm_medium=ART&utm_campaign=May_Zoho_Webinar>)**\u201d \u2013 a LIVE roundtable event on**[** Wed, May 12 at 2:00 PM EDT**](<https://threatpost.com/webinars/fortifying-your-business-against-attacks/?utm_source=ART&utm_medium=ART&utm_campaign=May_Zoho_Webinarhttps://threatpost.com/webinars/fortifying-your-business-against-attacks/?utm_source=ART&utm_medium=ART&utm_campaign=May_Zoho_Webinar>)**. Sponsored by Zoho ManageEngine, Threatpost host Becky Bracken moderates an expert panel discussing best defense strategies for these 2021 threats. Questions and LIVE audience participation encouraged. Join the lively discussion and **[**Register HERE**](<https://threatpost.com/webinars/fortifying-your-business-against-attacks/?utm_source=ART&utm_medium=ART&utm_campaign=May_Zoho_Webinar>)** for free. **\n", "cvss3": {}, "published": "2021-05-04T16:16:37", "type": "threatpost", "title": "Apple Fixes Zero\u2011Day Security Bugs Under Active Attack", "bulletinFamily": "info", "cvss2": {}, "cvelist": ["CVE-2021-1782", "CVE-2021-1870", "CVE-2021-1871", "CVE-2021-22893", "CVE-2021-30661", "CVE-2021-30663", "CVE-2021-30665", "CVE-2021-30666"], "modified": "2021-05-04T16:16:37", "id": "THREATPOST:33E56DEB736406F9DD08C7533BF1812B", "href": "https://threatpost.com/apple-zero%e2%80%91days-active-attack/165842/", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2021-02-17T16:39:38", "description": "Details of a flaw in Apple\u2019s Safari browser, publicly disclosed Tuesday, outline how the cybergang known as ScamClub reached 50 million users with a three-month-long malicious ad campaign pushing malware to mobile iOS Chrome and macOS desktop browsers.\n\nThe Safari bug, [patched on Dec. 2 by Apple](<https://support.apple.com/en-us/HT212147>), was exploited by a malvertising campaign that redirected traffic to scam sites that flogged gift cards, prizes and malware to victims. Impacted was Apple\u2019s Safari browser running on macOS Big Sur 11.0.1 and Google\u2019s iOS-based Chrome browser. The common thread is Apple\u2019s WebKit browser engine framework.\n\nThe attacks, which researchers at Confiant Security attributed to ScamClub, exploited a flaw in the open-source WebKit engine, according to [a blog post](<https://blog.confiant.com/malvertiser-scamclub-bypasses-iframe-sandboxing-with-postmessage-shenanigans-cve-2021-1801-1c998378bfba>) published Tuesday by Eliya Stein, senior security engineer who found the bug on June 22, 2020.\n\n[](<https://threatpost.com/newsletter-sign/>)\n\nHe reports that the malicious campaign exploited a privilege-escalation vulnerability, tracked as [CVE-2021\u20131801](<https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1801>). Stein did not report how many, if any, people may have been impacted by the campaign or what type of malicious activity the threat actors may have engaged in post-exploit. Typically, a privilege-escalation attack\u2019s primary goal is to obtain unauthorized access to a targeted system.\n\n## **What is ScamClub? **\n\nScamClub is a well-established cybergang that for the past three years has hijacked hundreds-of-millions of browser sessions with malvertising campaigns that redirect users to adult and gift card scams.\n\nUntil today, the group is best known for a massive 2018 campaign where it redirected 300 million users to shady phishing sites, serving up adult content and gift card scams.\n\nConfiant dubbed the group ScamClub, because of the criminal\u2019s use of multiple fast-changing redirection chains eventually spitting up shady gift-card offers and adult content.\n\nScamClub typically uses a \u201cbombardment\u201d strategy to flood ad-delivery systems with \u201ctons of horrendous demand\u201d rather than trying to obfuscate its nefarious activity, researchers note.\n\n\u201cThey do this at incredibly high volumes in the hopes that the small percentage that slips through will do significant damage,\u201d he explained.\n\n## **What are the ScamClub Details of the WebKit Exploit? **\n\nIn his Tuesday-report, Stein said this most recent ScamClub campaign redirected users to landing pages that offer prizes, such as \u201cYou\u2019ve won a Walmart gift card!\u201d or \u201cYou\u2019ve won an iPhone!\u201d to rather successful effect, he wrote.\n\nOver the last 90 days alone, ScamClub has delivered over 50 million malicious impressions, \u201cmaintaining a low baseline of activity augmented by frequent manic bursts,\u201d with as many as 16 million impacted ads being served in a single day, according to Stein.\n\nThis type of attack vector can be difficult for both the average person using the internet and businesses alike to handle, given the potential number of malicious ads being served, observed Saryu Nayyar, CEO of unified security and risk analytics firm Gurucul.\n\n\u201cAttacks like this can be a challenge to mitigate for home users, beyond keeping their patches up to date relying on an ISP provided or third-party service to block known malicious DNS domains,\u201d she said in an email to Threatpost. \u201cOrganizations have a similar challenge with the sheer volume of malicious ads, but can benefit from enabling the same techniques and security analytics that can help identify malicious activities by their behaviors.\u201d\n\n## **Diary of a WebKit Exploit**\n\nThe latest ScamCard payload has a number of steps to it, starting with an ad tag that loads a malicious Content Delivery Network-hosted dependency typically \u201cobfuscated in absurd ways in attempt to evade URL blocklists\u201d that can expand to thousands of lines of code, Stein wrote.\n\nHe said that Confiant researchers narrowed their investigation down to four lines of code that ultimately alerted them to ScamClub\u2019s use of the WebKit bug in its campaign:[](<https://media.threatpost.com/wp-content/uploads/sites/103/2021/02/17102521/scamclub-four-lines-of-code-webkit.png>)Observing that the code seemed different than a typical malvertising tactic of trying \u201cto spray a bunch of redirect attempts in a single payload that try to do the redirect in different ways,\u201d researchers investigated by staging a simple HTML file that implemented a cross-origin sandboxed frame and a button that dispatched their event.\n\n\u201cThe `allow-top-navigation-by-user-activation` sandbox attribute, which is often lauded as one of the most vital tools in an anti-malvertising strategy, should in theory prevent any redirection unless a proper activation takes place,\u201d Stein explained. \u201cActivation in this context typically means a tap or a click _inside_ the frame.\u201d\n\nIf this was the case, then Confiant\u2019s proof of concept should not have been able to redirect the page. However, it did, which proved to researchers that ScamClub\u2019s use of \u201ca long tail iframe sandbox bypass\u201d was leveraging a browser bug that turned out to be in WebKit, Stein said.\n\n### _Is your small- to medium-sized business an easy mark for attackers?_\n\n**Threatpost WEBINAR:** _ Save your spot for __\u201c**15 Cybersecurity Pitfalls and Fixes for SMBs**__,\u201d a _[**_FREE Threatpost webinar_**](<https://threatpost.com/webinars/15-cybersecurity-gaffes-and-fixes-mid-size-businesses-face/?utm_source=ART&utm_medium=ART&utm_campaign=Feb_webinar>)** _on Feb. 24 at 2 p.m. ET._**_ Cybercriminals count on you making these mistakes, but our experts will help you lock down your small- to mid-sized business like it was a Fortune 100. _[_Register NOW_](<https://threatpost.com/webinars/15-cybersecurity-gaffes-and-fixes-mid-size-businesses-face/?utm_source=ART&utm_medium=ART&utm_campaign=Feb_webinar>)_ for this _**_LIVE_****_ _**_webinar on Wed., Feb. 24._\n", "cvss3": {}, "published": "2021-02-17T15:30:37", "type": "threatpost", "title": "Details Tied to Safari Browser-based 'ScamClub' Campaign Revealed", "bulletinFamily": "info", "cvss2": {}, "cvelist": ["CVE-2021-1801"], "modified": "2021-02-17T15:30:37", "id": "THREATPOST:4EC160EC2EBC650C54F5047502D0F7A4", "href": "https://threatpost.com/safari-browser-scamclub-campaign-revealed/164023/", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2021-03-02T18:06:16", "description": "Hackers behind previous [iPhone jailbreak tools](<https://threatpost.com/new-ios-jailbreak-tool-works-on-iphone-models-ios-11-to-ios-13-5/156045/>) have released a jailbreak update based on a recently discovered and patched iPhone vulnerability. According to iPhone jailbreakers at UnC0ver, the tool allows users to take full control over unpatched iPhones.\n\nThe jailbreak\u2014which UnC0ver said works on iOS versions 11.0 to 14.3\u2013exploits the kernel vulnerability CVE-2021-1782, one of [three iOS flaws](<https://threatpost.com/apple-patches-zero-days-ios-emergency-update/163374/>) for which Apple released an emergency update, iOS 14.4, last month. At the time the company said the vulnerabilities potentially were being exploited in the wild.\n\nWith the release of 14.4, a number of devices already will have been updated, which means the jailbreak won\u2019t work. However, anyone with a device running 14.3 or earlier version of iOS can use the tool to hack into their iPhone, according to UnC0ver. \n[](<https://threatpost.com/newsletter-sign/>)UnC0ver [shared its discovery on Twitter](<https://twitter.com/Pwn20wnd/status/1365833293069975557>), announcing UnC0ver v6.0.0, after one of the group\u2019s members, Pwn20wnd, who put out several teaser tweets about the imminent arrival of the jailbreak tool before its release.\n\n\u201cTweet your device model and why you will be jailbreaking your device on iOS 14 with the hashtag [#unc0ver](<https://twitter.com/hashtag/unc0ver?src=hashtag_click>)!\u201d Pwn20wnd tweeted on Feb. 27 before releasing the tool, with other enthusiasts echoing the call to spread the news.\n\n## What Exactly is a Jailbreak Tool?\n\nJailbreak tools are software that take advantage of vulnerabilities in iOS to allow users root access and full control of their device. Jailbreaking bypasses DRM restrictions, allowing users to run unauthorized and custom software as well as make other tweaks to iOS.\n\nApple\u2019s iOS and other OSes for its products are notoriously closed-source, which has irked developers that like to peer under the hood and play with the code on their devices. The company historically has cited security reasons for not permitting its users tinker with the proprietary code for iOS.\n\nJailbreaks like the ones unC0ver has become notorious for releasing have become popular ways for iOS developers and users to hack into their own devices to make custom changes to their devices, and are typically met with enthusiasm from iPhone aficionados.\n\n\u201cIt\u2019s great to see [#unc0ver](<https://twitter.com/hashtag/unc0ver?src=hashtag_click>) after such a long wait for a iOS 14 jailbreak on newer devices. even better that it was a complete surprise!\u201d tweeted [Jamie Bishop](<https://twitter.com/jamiebishop123>), a software engineer and self-proclaimed iOS hacker.\n\nHowever, some enthusiasts grumbled that they wish they\u2019d had prior warning that a jailbreak was going to be released, because their devices had already updated to iOS 14.4 and so the tool was rendered useless to them.\n\n\u201cWell\u2026A little heads up would\u2019ve been appreciated,\u201d [tweeted](<https://twitter.com/ddavid_son/status/1365827024774922240>) [David Davidson](<https://twitter.com/ddavid_son>), and iPhone user in Israel, in response to Bishop. \u201cNow there\u2019s a lot of us with nothing to do.\u201d\n\nIt\u2019s been a little more than 10 months since UnC0ver released its last iPhone jailbreak tool. That one came in May 2020, which allowed people to break into devices up to iOS 13.5, which was then the latest release. Apple quietly [released a patch](<https://threatpost.com/apple-jailbreak-zero-day-patch/156201/>) for the jailbreak not long after.\n", "cvss3": {}, "published": "2021-03-02T17:54:53", "type": "threatpost", "title": "Jailbreak Tool Works on iPhones Up to iOS 14.3", "bulletinFamily": "info", "cvss2": {}, "cvelist": ["CVE-2021-1782"], "modified": "2021-03-02T17:54:53", "id": "THREATPOST:26C336F10C4AB0FEC01844CA1040746F", "href": "https://threatpost.com/jailbreak-tool-works-on-iphones-up-to-ios-14-3/164420/", "cvss": {"score": 0.0, "vector": "NONE"}}], "thn": [{"lastseen": "2022-05-09T12:39:11", "description": "[](<https://thehackernews.com/images/-jMlIotpt0jU/YBD-s7n5YQI/AAAAAAAABmI/X0k_6KZYvcAOxTj1nJiddOWRAnW-eYg9ACLcBGAsYHQ/s0/apple-iphone-hacking.jpg>)\n\nApple on Tuesday released updates for iOS, iPadOS, and tvOS with fixes for three security vulnerabilities that it says may have been actively exploited in the wild.\n\nReported by an anonymous researcher, the three [zero-day](<https://support.apple.com/en-us/HT212146>) [flaws](<https://support.apple.com/en-us/HT212149>) \u2014 CVE-2021-1782, CVE-2021-1870, and CVE-2021-1871 \u2014 could have allowed an attacker to elevate privileges and achieve remote code execution.\n\nThe iPhone maker did not disclose how widespread the attack was or reveal the identities of the attackers actively exploiting them.\n\nWhile the privilege escalation bug in the kernel (CVE-2021-1782) was noted as a race condition that could cause a malicious application to elevate its privileges, the other two shortcomings \u2014 dubbed a \"logic issue\" \u2014 were discovered in the WebKit browser engine (CVE-2021-1870 and CVE-2021-1871), permitting an attacker to achieve arbitrary code execution inside Safari.\n\nApple said the race condition and the WebKit flaws were addressed with improved locking and restrictions, respectively.\n\n[](<https://thehackernews.com/images/-fdpXkbfWGTA/YBD_Bui-nuI/AAAAAAAABmQ/MgynC4sTjqETJbW_z8c8Hc-4lAuJHG5rgCLcBGAsYHQ/s0/hacking.jpg>)\n\nWhile exact details of the exploit leveraging the flaws are unlikely to be made public until the patches have been widely applied, it wouldn't be a surprise if they were chained together to carry out watering hole attacks against potential targets.\n\nSuch an attack would involve delivering the malicious code simply by visiting a compromised website that then takes advantage of the aforementioned vulnerabilities to escalate its privileges and run arbitrary commands to take control of the device.\n\nThe updates are now available for iPhone 6s and later, iPad Air 2 and later, iPad mini 4 and later, and iPod touch (7th generation), as well as Apple TV 4K and Apple TV HD.\n\nNews of the latest zero-days comes after the company resolved three actively exploited vulnerabilities in [November 2020](<https://thehackernews.com/2020/11/update-your-ios-devices-now-3-actively.html>) and a separate zero-day bug in iOS 13.5.1 that was disclosed as used in a [cyberespionage campaign](<https://thehackernews.com/2020/12/iphones-of-36-journalists-hacked-using.html>) targeting Al Jazeera journalists last year.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-01-27T05:50:00", "type": "thn", "title": "Apple Warns of 3 iOS Zero-Day Security Vulnerabilities Exploited in the Wild", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1782", "CVE-2021-1870", "CVE-2021-1871"], "modified": "2021-01-27T05:50:09", "id": "THN:739D9EFE8C7F1B29E2430DAC65CDEE52", "href": "https://thehackernews.com/2021/01/apple-warns-of-3-ios-zero-day-security.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-09T12:39:03", "description": "[](<https://thehackernews.com/images/-Aros4Hd7Hj8/YEcYaYPj-TI/AAAAAAAAB-g/2ZSR204Gt-cvho0M5p936SrWsC_s00ulwCLcBGAsYHQ/s0/apple.jpg>)\n\nApple has released out-of-band patches for iOS, macOS, watchOS, and Safari web browser to address a security flaw that could allow attackers to run arbitrary code on devices via malicious web content.\n\nTracked as **CVE-2021-1844**, the vulnerability was discovered and reported to the company by Cl\u00e9ment Lecigne of Google's Threat Analysis Group and Alison Huffman of Microsoft Browser Vulnerability Research.\n\nAccording to the update notes posted by Apple, the flaw stems from a memory corruption issue that could lead to arbitrary code execution when processing specially crafted web content. The company said the problem was addressed with \"improved validation.\"\n\nThe update is available for devices running [iOS 14.4, iPadOS 14.4](<https://support.apple.com/en-us/HT212221>), [macOS Big Sur](<https://support.apple.com/en-us/HT212220>), and [watchOS 7.3.1](<https://support.apple.com/en-us/HT212222>) (Apple Watch Series 3 and later), and as an [update to Safari](<https://support.apple.com/en-us/HT212223>) for MacBooks running macOS Catalina and macOS Mojave.\n\n[](<https://thehackernews.com/images/-x-pwD8r0Hz0/YEcYq2S27qI/AAAAAAAAB-o/e7pap0QYYvU1uk765ZMqSeKYUofKWRYegCLcBGAsYHQ/s0/apple.jpg>)\n\nThe latest development comes on the heels of a patch for [three zero-day vulnerabilities](<https://thehackernews.com/2021/01/apple-warns-of-3-ios-zero-day-security.html>) (CVE-2021-1782, CVE-2021-1870, and CVE-2021-1871) that was released in January. The weaknesses, which allow an attacker to elevate privileges and achieve remote code execution, were later exploited by the team behind the \"[unc0ver](<https://thehackernews.com/2021/03/new-unc0ver-tool-can-jailbreak-all.html>)\" jailbreak tool to unlock almost every single iPhone model running 14.3.\n\nIt's worth noting that Huffman was also behind the discovery of an [actively exploited zero-day bug](<https://thehackernews.com/2021/03/new-chrome-0-day-bug-under-active.html>) in the Chrome browser that was addressed by Google last week. But unlike the Chrome security flaw, there is no evidence that CVE-2021-1844 is being exploited by malicious hackers.\n\nUsers of Apple devices or those running a vulnerable version of Chrome are advised to install the updates as soon as possible to mitigate the risk associated with the flaws.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-03-09T06:51:00", "type": "thn", "title": "Apple Issues Patch for Remote Hacking Bug Affecting Billions of its Devices", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1782", "CVE-2021-1844", "CVE-2021-1870", "CVE-2021-1871"], "modified": "2021-03-09T08:58:35", "id": "THN:59DC40FBDFBEBE12E11B551510E4B2E6", "href": "https://thehackernews.com/2021/03/apple-issues-patch-for-remote-hacking.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-09T12:38:24", "description": "[](<https://thehackernews.com/images/-5Zi_45-pXus/YF7LgsUU1pI/AAAAAAAACHQ/ltYZDuSTuqwbzRstY55f-hwWOXjS_zI2gCLcBGAsYHQ/s0/mac-malware-proxy-setting.png>)\n\nMerely weeks after releasing out-of-band patches for iOS, iPadOS, macOS and watchOS, Apple has issued yet another security update for iPhone, iPad, and Apple Watch to fix a critical zero-day weakness that it says is being actively exploited in the wild.\n\nTracked as **CVE-2021-1879**, the vulnerability relates to a WebKit flaw that could enable adversaries to process maliciously crafted web content that may result in universal cross-site scripting attacks.\n\n\"This issue was addressed by improved management of object lifetimes,\" the iPhone maker noted.\n\nApple has credited Clement Lecigne and Billy Leonard of Google's Threat Analysis Group for discovering and reporting the issue. While details of the flaw have not been disclosed, the company said it's aware of reports that CVE-2021-1879 may have been actively exploited.\n\nUpdates are available for the following devices:\n\n * [iOS 12.5.2](<https://support.apple.com/en-us/HT212257>) \\- Phone 5s, iPhone 6, iPhone 6 Plus, iPad Air, iPad mini 2, iPad mini 3, and iPod touch (6th generation)\n * [iOS 14.4.2](<https://support.apple.com/en-us/HT212256>) \\- iPhone 6s and later, and iPod touch (7th generation)\n * [iPadOS 14.4.2](<https://support.apple.com/en-us/HT212256>) \\- iPad Pro (all models), iPad Air 2 and later, iPad 5th generation and later, iPad mini 4 and later\n * [watchOS 7.3.3](<https://support.apple.com/en-us/HT212258>) \\- Apple Watch Series 3 and later\n\nThe latest release arrives close on the heels of a patch for a separate WebKit flaw ([CVE-2021-1844](<https://thehackernews.com/2021/03/apple-issues-patch-for-remote-hacking.html>)) that Apple shipped earlier this month. In January 2021, the company resolved [three zero-day vulnerabilities](<https://thehackernews.com/2021/01/apple-warns-of-3-ios-zero-day-security.html>) (CVE-2021-1782, CVE-2021-1870, and CVE-2021-1871) that allowed an attacker to elevate privileges and achieve remote code execution.\n\nInterestingly, Apple also appears to be [experimenting](<https://thehackernews.com/2021/03/apple-may-start-delivering-security.html>) with ways to deliver security updates on iOS in a manner that's independent of other OS updates. iOS 14.4.2 certainly sounds like the kind of update that could benefit from this feature.\n\nIn the meanwhile, users of Apple devices are advised to install the updates as soon as possible to mitigate the risk associated with the flaw.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-03-27T06:07:00", "type": "thn", "title": "Apple Issues Urgent Patch Update for Another Zero\u2011Day Under Attack", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1782", "CVE-2021-1844", "CVE-2021-1870", "CVE-2021-1871", "CVE-2021-1879"], "modified": "2021-03-27T08:51:29", "id": "THN:4EFE9C3A3A0DEB0019296A14C9EAC1FA", "href": "https://thehackernews.com/2021/03/apple-issues-urgent-patch-update-for.html", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-05-09T12:38:06", "description": "[](<https://thehackernews.com/new-images/img/a/AVvXsEhf6R1rpjooBMJB5VYXsPk55LcjDZi06m4M6DejNh9ll3f8vqPZsn-97mXinQIQq-BR5FD7fNHbdBpb4nHXFdP8fcsLFYVf8KriAna2bTSWzZsKGHyxuNztdV4UzvPA_LJGzIUjHmfrSKfM2UZOpW9_4ZmeGANntisne50ZD44qwNGEwVuby4L-WTdz>)\n\nGoogle researchers on Thursday disclosed that it found a watering hole attack in late August exploiting a now-patched zero-day in macOS operating system and targeting Hong Kong websites related to a media outlet and a prominent pro-democracy labor and political group to deliver a never-before-seen backdoor on compromised machines.\n\n\"Based on our findings, we believe this threat actor to be a well-resourced group, likely state backed, with access to their own software engineering team based on the quality of the payload code,\" Google Threat Analysis Group (TAG) researcher Erye Hernandez [said](<https://blog.google/threat-analysis-group/analyzing-watering-hole-campaign-using-macos-exploits/>) in a report.\n\nTracked as [CVE-2021-30869](<https://thehackernews.com/2021/09/urgent-apple-ios-and-macos-updates.html>) (CVSS score: 7.8), the security shortcoming concerns a type confusion vulnerability affecting the [XNU](<https://en.wikipedia.org/wiki/XNU>) kernel component that could cause a malicious application to execute arbitrary code with the highest privileges.\n\nApple originally addressed the issue for macOS Big Sur devices as part of a [security update](<https://support.apple.com/en-us/HT212147>) shipped on February 1, only to follow it up with a [standalone update](<https://thehackernews.com/2021/09/urgent-apple-ios-and-macos-updates.html>) aimed at macOS Catalina devices on September 23 following reports of in-the-wild exploitation \u2014 a gap of 234 days between the two patches \u2014 underscoring a case of how inconsistencies in resolving a vulnerability across different versions of the operating system can be exploited by threat actors to their advantage.\n\n[](<https://thehackernews.com/new-images/img/a/AVvXsEgBc2wi_nptuLq8mX8yzo2Yh8_UT1zEKH-mYmxjh6zs3H1iAVdDEa8DPQxpQtr3HnMhz6g06KTbCn-bhEDXfCI149kv5lbL3_jfCQpGeXvIr26AwoU0Y_2Pilt4iv2Xy-aerSXXjPxPGured_8v-5yMlucyY7mgDza_tguUOJWJwK3xRXjRl3VnP6Ho>)\n\nThe attacks observed by TAG involved an exploit chain that strung together [CVE-2021-1789](<https://support.apple.com/en-us/HT212147>), a remote code execution bug in WebKit that was fixed in February 2021, and the aforementioned CVE-2021-30869 to break out of the Safari sandbox, elevate privileges, and download and execute a second stage payload dubbed \"MACMA\" from a remote server.\n\n[](<https://thehackernews.com/new-images/img/a/AVvXsEitobN2XhP0Nz0JFITNajTEAT1EHbW995w8WPlbFoAGAv7pAH28rA3VXz0UHIgSF620KZAV0TbnQf_VQ8U2fj5ZL5Qy0rdF3zJ54q_TyQ8uDeuI1_PHtF9WCY2eqTffURXRYu35Pl6hvKmzuGL3v2TdsL45etr68Yy81zfXiZE5p97iR-PybTFCt2BX>)\n\nThis previously undocumented malware, a fully-featured implant, is marked by \"extensive software engineering\" with capabilities to record audio and keystrokes, fingerprint the device, capture the screen, download and upload arbitrary files, and execute malicious terminal commands, Google TAG said. [Samples](<https://www.virustotal.com/gui/file/cf5edcff4053e29cb236d3ed1fe06ca93ae6f64f26e25117d68ee130b9bc60c8>) of the [backdoor](<https://www.virustotal.com/gui/file/f0b12413c9d291e3b9edd1ed1496af7712184a63c066e1d5b2bb528376d66ebc>) uploaded to VirusTotal reveal that none of the anti-malware engines currently detect the files as malicious.\n\nAccording to security researcher [Patrick Wardle](<https://objective-see.com/blog/blog_0x69.html>), a 2019 variant of MACMA masquerades as Adobe Flash Player, with the binary displaying an error message in Chinese language post-installation, suggesting that \"the malware is geared towards Chinese users\" and that \"this version of the malware is designed to be deployed via socially engineering methods.\" The 2021 version, on the other hand, is designed for remote exploitation.\n\nThe websites, which contained malicious code to serve exploits from an attacker-controlled server, also acted as a watering hole to target iOS users, albeit using a different exploit chain delivered to the victims' browser. Google TAG said it was only able to recover a part of the infection flow, where a type confusion bug ([CVE-2019-8506](<https://nvd.nist.gov/vuln/detail/CVE-2019-8506>)) was used to gain code execution in Safari.\n\nAdditional indicators of compromise (IoCs) associated with the campaign can be accessed [here](<https://blog.google/threat-analysis-group/analyzing-watering-hole-campaign-using-macos-exploits/>).\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2021-11-12T05:38:00", "type": "thn", "title": "Hackers Exploit macOS Zero-Day to Hack Hong Kong Users with new Implant", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-8506", "CVE-2021-1789", "CVE-2021-30869"], "modified": "2021-11-15T04:47:54", "id": "THN:C81BD176DFB6F0D878C30EC98291E803", "href": "https://thehackernews.com/2021/11/hackers-exploit-macos-zero-day-to-hack.html", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2022-05-09T12:37:39", "description": "[](<https://thehackernews.com/new-images/img/a/AVvXsEiby0UKNn-fEmfjCCpcSIL1uT5Zo6ySgAInkaGpD5kICLibeCrJal9ip8iiWZom1KSuMASKAzqAdABkrcXZRT2rs-zc7Ev_WcetTcEAGE0v0b-GkAUN-j60-dlOBws26h_qm6sVGXmd97E08ijz4fHLdvRx3XDSY_6YtQ6nEVj6kJ570dOdttC7_fYI>)\n\nA previously undocumented cyber-espionage malware aimed at Apple's macOS operating system leveraged a Safari web browser exploit as part of a [watering hole attack](<https://csrc.nist.gov/glossary/term/watering_hole_attack>) targeting politically active, pro-democracy individuals in Hong Kong.\n\nSlovak cybersecurity firm ESET [attributed](<https://www.welivesecurity.com/2022/01/25/watering-hole-deploys-new-macos-malware-dazzlespy-asia/>) the intrusion to an actor with \"strong technical capabilities,\" calling out the campaign's overlaps to that of a similar digital offensive [disclosed](<https://thehackernews.com/2021/11/hackers-exploit-macos-zero-day-to-hack.html>) by Google Threat Analysis Group (TAG) in November 2021.\n\nThe attack chain involved compromising a legitimate website belonging to D100 Radio, a pro-democracy internet radio station in Hong Kong, to inject malicious inline frames (aka [iframes](<https://developer.mozilla.org/en-US/docs/Web/HTML/Element/iframe>)) between September 30 and November 4, 2021. Separately, a fraudulent website called \"fightforhk[.]com\" was also registered for the purpose of luring liberation activists.\n\nIn the next phase, the tampered code acted as a conduit to load a [Mach-O](<https://en.wikipedia.org/wiki/Mach-O>) file by leveraging a remote code execution bug in WebKit that was fixed by Apple in February 2021 ([CVE-2021-1789](<https://support.apple.com/en-us/HT212147>)). \"The exploit used to gain code execution in the browser is quite complex and had more than 1,000 lines of code once formatted nicely,\" ESET researchers said.\n\nThe success of the WebKit remote code execution subsequently triggers the execution of the intermediate Mach-O binary that, in turn, exploits a now-patched local privilege escalation vulnerability in the kernel component ([CVE-2021-30869](<https://thehackernews.com/2021/09/urgent-apple-ios-and-macos-updates.html>)) to run the next stage malware as a root user.\n\n[](<https://thehackernews.com/new-images/img/a/AVvXsEgf6xXVus6HqGyMZAOGWzSOH1A9yTelfy52vL3_EMgY4nqOAwjMjYzVmzFc2o7M-tbTI1E0pvHSnNv1dTJe8v3cEM3hzecoAZFoa-SS3nPCGPh_HKar8C54Xkqi3KtIu04-TULcr7MX9PDPvaDBUdn7No2k8VO4K7MwjDThkOCTfMTiVD5_dNKziI_b>)\n\nWhile the infection sequence detailed by Google TAG culminated in the installation of an implant called MACMA, the malware delivered to visitors of the D100 Radio site was a new macOS backdoor that ESET has codenamed **DazzleSpy**.\n\nThe malware provides attackers \"a large set of functionalities to control, and exfiltrate files from, a compromised computer,\" the researchers explained, in addition to incorporating a number of other features, including \u2014\n\n * Harvesting system information\n * Executing arbitrary shell commands\n * Dumping iCloud Keychain using a [CVE-2019-8526](<https://nvd.nist.gov/vuln/detail/CVE-2019-8526>) exploit if the macOS version is lower than 10.14.4\n * Starting or terminating a remote screen session, and\n * Deleting itself from the machine\n\nAmong other interesting findings about the attacks is that once the malware obtains the current date and time on a compromised computer, it converts the obtained date to the Asia/Shanghai time zone (aka China Standard Time), before sending it to the command-and-control server.\n\n\"This campaign has similarities with one from 2020 where [LightSpy](<https://thehackernews.com/2020/03/iphone-iOS-spyware.html>) iOS malware (described by [Trend Micro](<https://www.trendmicro.com/en_us/research/20/c/operation-poisoned-news--hong-kong-users-targeted-with-mobile-ma.html>) and [Kaspersky](<https://securelist.com/ios-exploit-chain-deploys-lightspy-malware/96407/>)) was distributed the same way, using iframe injection on websites for Hong Kong citizens leading to a WebKit exploit,\" the researchers said. That said, it's not immediately clear if both the campaigns were orchestrated by the same group.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 5.9}, "published": "2022-01-25T12:32:00", "type": "thn", "title": "Hackers Infect macOS with New DazzleSpy Backdoor in Watering-Hole Attacks", "bulletinFamily": "info", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 10.0, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-8526", "CVE-2021-1789", "CVE-2021-30869"], "modified": "2022-01-27T04:35:01", "id": "THN:3F527FB34758F461CB88126624C0A51D", "href": "https://thehackernews.com/2022/01/hackers-infect-macos-with-new-dazzlespy.html", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2022-05-09T12:39:07", "description": "[](<https://thehackernews.com/images/-pZbqnOXttL8/YCzABraKY3I/AAAAAAAAByk/dQW5ke2LZIAZWJFS08DEBVN6InouwoA9ACLcBGAsYHQ/s0/visa-hacking.jpg>)\n\nA malvertising group known as \"ScamClub\" exploited a zero-day vulnerability in WebKit-based browsers to inject malicious payloads that redirected users to fraudulent websites gift card scams.\n\nThe attacks, first [spotted](<https://blog.confiant.com/malvertiser-scamclub-bypasses-iframe-sandboxing-with-postmessage-shenanigans-cve-2021-1801-1c998378bfba>) by ad security firm Confiant in late June 2020, leveraged a bug (CVE-2021\u20131801) that allowed malicious parties to bypass the [iframe](<https://developer.mozilla.org/en-US/docs/Web/HTML/Element/iframe>) sandboxing policy in the browser engine that powers Safari and Google Chrome for iOS and run malicious code.\n\nSpecifically, the technique exploited the manner how WebKit handles JavaScript [event listeners](<https://developer.mozilla.org/en-US/docs/Web/API/EventListener>), thus making it possible to break out of the sandbox associated with an ad's inline frame element despite the presence of \"allow-top-navigation-by-user-activation\" attribute that explicitly forbids any redirection unless the click event occurs inside the iframe.\n\nTo test this hypothesis, the researchers set about creating a simple HTML file containing a cross-origin sandboxed iframe and a button outside it that triggered an event to access the iframe and redirect the clicks to rogue websites.\n\n\"The [...] button is outside of the sandboxed frame after all,\" Confiant researcher Eliya Stein said. \"However, if it does redirect, that means we have a browser security bug on our hands, which turned out to be the case when tested on WebKit based browsers, namely Safari on desktop and iOS.\"\n\n[](<https://thehackernews.com/images/-7WViMHKcxyc/YCy_iTMdyXI/AAAAAAAAByc/HhYwiGvYNGM6PgKkorIbgfB6p02dr7A7wCLcBGAsYHQ/s0/hacking.jpg>)\n\nFollowing responsible disclosure to Apple on June 23, 2020, the tech giant [patched](<https://trac.webkit.org/changeset/270373/webkit>) WebKit on December 2, 2020, and subsequently addressed the issue \"with improved iframe sandbox enforcement\" as part of security updates released earlier this month for [iOS 14.4](<https://support.apple.com/en-in/HT212146>) and [macOS Big Sur](<https://support.apple.com/en-us/HT212147>).\n\nConfiant said the operators of ScamClub have delivered more than 50 million malicious impressions over the last 90 days, with as many as 16MM impacted ads being served in a single day.\n\n\"On the tactics side, this attacker historically favors what we refer to as a 'bombardment' strategy,\" Stein elaborated.\n\n\"Instead of trying to fly under the radar, they flood the ad tech ecosystem with tons of horrendous demand well aware that the majority of it will be blocked by some kind of gatekeeping, but they do this at incredibly high volumes in the hopes that the small percentage that slips through will do significant damage.\"\n\nConfiant has also [published](<https://github.com/WeAreConfiant/security/blob/master/stix-feeds/scamclub.stix.json>) a list of websites used by the ScamClub group to run its recent scam campaign.\n\n \n\n\nFound this article interesting? Follow THN on [Facebook](<https://www.facebook.com/thehackernews>), [Twitter _\uf099_](<https://twitter.com/thehackersnews>) and [LinkedIn](<https://www.linkedin.com/company/thehackernews/>) to read more exclusive content we post.\n", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 6.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "version": "3.1", "userInteraction": "REQUIRED"}, "impactScore": 3.6}, "published": "2021-02-17T07:11:00", "type": "thn", "title": "Malvertisers Exploited WebKit 0-Day to Redirect Browser Users to Scam Sites", "bulletinFamily": "info", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1801"], "modified": "2021-02-17T07:11:54", "id": "THN:99F0C5326CD3398017C19279EE84B66E", "href": "https://thehackernews.com/2021/02/malvertisers-exploited-webkit-0-day-to.html", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:N/I:P/A:N"}}], "osv": [{"lastseen": "2022-08-10T07:19:54", "description": "\nThe following vulnerabilities have been discovered in the webkit2gtk\nweb engine:\n\n\n* [CVE-2020-27918](https://security-tracker.debian.org/tracker/CVE-2020-27918)\nLiu Long discovered that processing maliciously crafted web\n content may lead to arbitrary code execution.\n* [CVE-2020-29623](https://security-tracker.debian.org/tracker/CVE-2020-29623)\nSimon Hunt discovered that users may be unable to fully delete\n their browsing history under some circumstances.\n* [CVE-2021-1765](https://security-tracker.debian.org/tracker/CVE-2021-1765)\nEliya Stein discovered that maliciously crafted web content may\n violate iframe sandboxing policy.\n* [CVE-2021-1789](https://security-tracker.debian.org/tracker/CVE-2021-1789)\n@S0rryMybad discovered that processing maliciously crafted web\n content may lead to arbitrary code execution.\n* [CVE-2021-1799](https://security-tracker.debian.org/tracker/CVE-2021-1799)\nGregory Vishnepolsky, Ben Seri and Samy Kamkar discovered that a\n malicious website may be able to access restricted ports on\n arbitrary servers.\n* [CVE-2021-1801](https://security-tracker.debian.org/tracker/CVE-2021-1801)\nEliya Stein discovered that processing maliciously crafted web\n content may lead to arbitrary code execution.\n* [CVE-2021-1870](https://security-tracker.debian.org/tracker/CVE-2021-1870)\nAn anonymous researcher discovered that processing maliciously\n crafted web content may lead to arbitrary code execution.\n\n\nFor the stable distribution (buster), these problems have been fixed in\nversion 2.30.6-1~deb10u1.\n\n\nWe recommend that you upgrade your webkit2gtk packages.\n\n\nFor the detailed security status of webkit2gtk please refer to\nits security tracker page at:\n[\\\nhttps://security-tracker.debian.org/tracker/webkit2gtk](https://security-tracker.debian.org/tracker/webkit2gtk)\n\n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-03-27T00:00:00", "type": "osv", "title": "webkit2gtk - security update", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-27918", "CVE-2021-21806", "CVE-2021-1870", "CVE-2020-29623", "CVE-2021-1801", "CVE-2021-1799", "CVE-2021-1765", "CVE-2021-1789"], "modified": "2022-08-10T07:19:48", "id": "OSV:DSA-4877-1", "href": "https://osv.dev/vulnerability/DSA-4877-1", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-08-10T07:20:11", "description": "\nThe following vulnerabilities have been discovered in the webkit2gtk\nweb engine:\n\n\n* [CVE-2021-1788](https://security-tracker.debian.org/tracker/CVE-2021-1788)\nFrancisco Alonso discovered that processing maliciously crafted\n web content may lead to arbitrary code execution.\n* [CVE-2021-1844](https://security-tracker.debian.org/tracker/CVE-2021-1844)\nClement Lecigne and Alison Huffman discovered that processing\n maliciously crafted web content may lead to arbitrary code\n execution.\n* [CVE-2021-1871](https://security-tracker.debian.org/tracker/CVE-2021-1871)\nAn anonymous researcher discovered that a remote attacker may be\n able to cause arbitrary code execution.\n\n\nFor the stable distribution (buster), these problems have been fixed in\nversion 2.32.1-1~deb10u1.\n\n\nWe recommend that you upgrade your webkit2gtk packages.\n\n\nFor the detailed security status of webkit2gtk please refer to\nits security tracker page at:\n[\\\nhttps://security-tracker.debian.org/tracker/webkit2gtk](https://security-tracker.debian.org/tracker/webkit2gtk)\n\n\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 9.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-05-30T00:00:00", "type": "osv", "title": "webkit2gtk - security update", "bulletinFamily": "software", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-30682", "CVE-2021-1844", "CVE-2021-1871", "CVE-2021-1788"], "modified": "2022-08-10T07:20:03", "id": "OSV:DSA-4923-1", "href": "https://osv.dev/vulnerability/DSA-4923-1", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}, {"lastseen": "2022-12-03T07:19:52", "description": "libpcre in PCRE before 8.44 allows an integer overflow via a large number after a (?C substring.", "cvss3": {}, "published": "2020-06-15T17:15:00", "type": "osv", "title": "CVE-2020-14155", "bulletinFamily": "software", "cvss2": {}, "cvelist": ["CVE-2020-14155"], "modified": "2022-12-03T07:19:47", "id": "OSV:CVE-2020-14155", "href": "https://osv.dev/vulnerability/CVE-2020-14155", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2022-05-11T21:38:11", "description": "Bulletin has no description", "cvss3": {"exploitabilityScore": 1.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 5.5, "privilegesRequired": "LOW", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-10-01T00:00:00", "type": "osv", "title": "In sqlite3Select of select.c, there is a possible out-of-bounds write due to a missing bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.", "bulletinFamily": "software", "cvss2": {"severity": "LOW", "exploitabilityScore": 3.9, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 2.1, "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "LOCAL", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-15358"], "modified": "2021-10-01T00:00:00", "id": "OSV:ASB-A-192605364", "href": "https://osv.dev/vulnerability/ASB-A-192605364", "cvss": {"score": 2.1, "vector": "AV:L/AC:L/Au:N/C:N/I:N/A:P"}}], "gentoo": [{"lastseen": "2023-06-06T15:24:42", "description": "### Background\n\nWebKitGTK+ is a full-featured port of the WebKit rendering engine, suitable for projects requiring any kind of web integration, from hybrid HTML/CSS applications to full-fledged web browsers. \n\n### Description\n\nMultiple vulnerabilities have been discovered in WebkitGTK+. Please review the CVE identifiers referenced below for details. \n\n### Impact\n\nAn attacker, by enticing a user to visit maliciously crafted web content, may be able to execute arbitrary code, violate iframe sandboxing policy, access restricted ports on arbitrary servers, cause memory corruption, or could cause a Denial of Service condition. \n\n### Workaround\n\nThere is no known workaround at this time.\n\n### Resolution\n\nAll WebkitGTK+ users should upgrade to the latest version:\n \n \n # emerge --sync\n # emerge --ask --oneshot --verbose \">=net-libs/webkit-gtk-2.30.6\"", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 5.9}, "published": "2021-04-30T00:00:00", "type": "gentoo", "title": "WebkitGTK+: Multiple vulnerabilities", "bulletinFamily": "unix", "cvss2": {"severity": "HIGH", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 6.4, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2020-13558", "CVE-2020-27918", "CVE-2020-29623", "CVE-2020-9947", "CVE-2021-1765", "CVE-2021-1789", "CVE-2021-1799", "CVE-2021-1801", "CVE-2021-1870"], "modified": "2021-04-30T00:00:00", "id": "GLSA-202104-03", "href": "https://security.gentoo.org/glsa/202104-03", "cvss": {"score": 7.5, "vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P"}}], "oraclelinux": [{"lastseen": "2021-11-16T22:30:46", "description": "[8.42-6]\n- Rebuild for BZ#1954441\n[8.42-5]\n- Fix CVE-2019-20838 (a subject buffer overread in JIT when UTF is disabled\n and \\X or \\R has a greater than 1 fixed quantifier) (bug #1852252)\n- Fix CVE-2020-14155 (an integer overflow when parsing numbers after '(?C'))\n (bug #1851552)", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "baseScore": 7.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "userInteraction": "NONE", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-11-16T00:00:00", "type": "oraclelinux", "title": "pcre security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-20838", "CVE-2020-14155"], "modified": "2021-11-16T00:00:00", "id": "ELSA-2021-4373", "href": "http://linux.oracle.com/errata/ELSA-2021-4373.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "redhat": [{"lastseen": "2023-06-03T15:19:20", "description": "PCRE is a Perl-compatible regular expression library. \n\nSecurity Fix(es):\n\n* pcre: Buffer over-read in JIT when UTF is disabled and \\X or \\R has fixed quantifier greater than 1 (CVE-2019-20838)\n\n* pcre: Integer overflow when parsing callout numeric arguments (CVE-2020-14155)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-11-09T09:12:45", "type": "redhat", "title": "(RHSA-2021:4373) Low: pcre security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-20838", "CVE-2020-14155"], "modified": "2021-11-09T14:11:40", "id": "RHSA-2021:4373", "href": "https://access.redhat.com/errata/RHSA-2021:4373", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "cloudfoundry": [{"lastseen": "2023-06-06T15:19:39", "description": "## Severity\n\nLow\n\n## Vendor\n\nCanonical Ubuntu\n\n## Versions Affected\n\n * Canonical Ubuntu 16.04\n * Canonical Ubuntu 18.04\n\n## Description\n\nYunho Kim discovered that PCRE incorrectly handled memory when handling certain regular expressions. An attacker could possibly use this issue to cause applications using PCRE to expose sensitive information. This issue only affects Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 21.10 and Ubuntu 22.04 LTS. (CVE-2019-20838) It was discovered that PCRE incorrectly handled memory when handling certain regular expressions. An attacker could possibly use this issue to cause applications using PCRE to have unexpected behavior. This issue only affects Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-14155) Update Instructions: Run `sudo ua fix USN-5425-1` to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: pcregrep \u2013 2:8.38-3.1ubuntu0.1~esm1 libpcre3-dev \u2013 2:8.38-3.1ubuntu0.1~esm1 libpcre3 \u2013 2:8.38-3.1ubuntu0.1~esm1 libpcrecpp0v5 \u2013 2:8.38-3.1ubuntu0.1~esm1 libpcre16-3 \u2013 2:8.38-3.1ubuntu0.1~esm1 libpcre32-3 \u2013 2:8.38-3.1ubuntu0.1~esm1 Available with UA Infra or UA Desktop: https://ubuntu.com/advantage\n\nCVEs contained in this USN include: CVE-2019-20838, CVE-2020-14155.\n\n## Affected Cloud Foundry Products and Versions\n\n_Severity is low unless otherwise noted._\n\n * Bionic Stemcells \n * 1.x versions prior to 1.85\n * All other stemcells not listed.\n * cflinuxfs3 \n * All versions prior to 0.299.0\n * CF Deployment \n * All versions prior to 21.0.0, or later versions with Bionic Stemcells prior to 1.85 or Xenial Stemcells prior to 621.244\n\n## Mitigation\n\nUsers of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:\n\n * Bionic Stemcells \n * Upgrade 1.x versions to 1.85 or greater\n * All other stemcells should be upgraded to the latest version available on [bosh.io](<https://bosh.io/stemcells>).\n * cflinuxfs3 \n * Upgrade all versions to 0.299.0 or greater\n * CF Deployment \n * Upgrade all versions to 21.0.0 or greater, upgrade Bionic Stemcells to 1.85 or greater, and upgrade Xenial Stemcells to 621.244 or greater\n\n## References\n\n * [USN Notice](<https://ubuntu.com/security/notices/USN-5425-1>)\n * [CVE-2019-20838](<https://ubuntu.com/security/CVE-2019-20838>)\n * [CVE-2020-14155](<https://ubuntu.com/security/CVE-2020-14155>)\n\n## History\n\n2022-07-29: Initial vulnerability report published.\n", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2022-07-29T00:00:00", "type": "cloudfoundry", "title": "USN-5425-1: PCRE vulnerabilities | Cloud Foundry", "bulletinFamily": "software", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-20838", "CVE-2020-14155"], "modified": "2022-07-29T00:00:00", "id": "CFOUNDRY:C51D5E136965C2018AA261ADFD5CD91D", "href": "https://www.cloudfoundry.org/blog/usn-5425-1-pcre-vulnerabilities/", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "almalinux": [{"lastseen": "2023-06-06T14:57:58", "description": "PCRE is a Perl-compatible regular expression library. \n\nSecurity Fix(es):\n\n* pcre: Buffer over-read in JIT when UTF is disabled and \\X or \\R has fixed quantifier greater than 1 (CVE-2019-20838)\n\n* pcre: Integer overflow when parsing callout numeric arguments (CVE-2020-14155)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-11-09T09:12:45", "type": "almalinux", "title": "Low: pcre security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-20838", "CVE-2020-14155"], "modified": "2023-03-13T16:33:45", "id": "ALSA-2021:4373", "href": "https://errata.almalinux.org/8/ALSA-2021-4373.html", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "rocky": [{"lastseen": "2023-06-06T16:08:09", "description": "An update is available for pcre.\nThis update affects Rocky Linux 8.\nA Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list\nPCRE is a Perl-compatible regular expression library. \n\nSecurity Fix(es):\n\n* pcre: Buffer over-read in JIT when UTF is disabled and \\X or \\R has fixed quantifier greater than 1 (CVE-2019-20838)\n\n* pcre: Integer overflow when parsing callout numeric arguments (CVE-2020-14155)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Rocky Linux 8.5 Release Notes linked from the References section.", "cvss3": {"exploitabilityScore": 3.9, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1", "userInteraction": "NONE"}, "impactScore": 3.6}, "published": "2021-11-09T09:12:45", "type": "rocky", "title": "pcre security update", "bulletinFamily": "unix", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 10.0, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "LOW", "confidentialityImpact": "NONE", "availabilityImpact": "PARTIAL", "integrityImpact": "NONE", "baseScore": 5.0, "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "acInsufInfo": false, "obtainUserPrivilege": false}, "cvelist": ["CVE-2019-20838", "CVE-2020-14155"], "modified": "2021-11-09T09:12:45", "id": "RLSA-2021:4373", "href": "https://errata.rockylinux.org/RLSA-2021:4373", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}], "malwarebytes": [{"lastseen": "2021-11-16T12:42:19", "description": "Apple&#x27;s reputation on security has been taking a beating lately. As mentioned in some of our previous coverage, security researcher [Joshua Long recently shone a light on problems with Apple&#x27;s security patching strategy](<https://blog.malwarebytes.com/malwarebytes-news/2021/10/inside-apple-how-apples-attitude-impacts-security/>). His findings showed a shocking number of cases where Apple patched a vulnerability, but did not do so in all of the vulnerable system versions. Often, systems older than the most current one were left in vulnerable states.\n\nIn theory, this could lead to attacks on those vulnerable systems. And new Mac malware that was disclosed on Thursday provides a concrete example of why this is not just theory.\n\n## Watering hole campaign discovered by Google\n\n[Google&#x27;s Threat Analysis Group (TAG) discovered a watering hole campaign](<https://blog.google/threat-analysis-group/analyzing-watering-hole-campaign-using-macos-exploits/>) in Hong Kong, targeting journalists and pro-democracy political groups. This campaign was using two macOS vulnerabilities to infect Macs that simply visited the wrong web page.\n\nA watering hole attack is one that&#x27;s deployed through a website that the desired target is likely to visit, so named because of the way predators will hide near a watering hole that is frequented by their prey.\n\nThe vulnerabilities were used to drop malware onto the computer silently, without the user needing to click on anything or even being aware that anything has happened. The malware itself is a pretty full-featured backdoor, but what is most remarkable about it is not its capabilities. This malware has been in the wild, with very few changes, since at least 2019. Back then, it was distributed as a trojan, in an installer disguised as - you&#x27;ll never guess - an Adobe Flash Player installer!\n\nFake Adobe Flash Player installer used to install the malware\n\nSome of the executable files dropped by this installer from 2019 are nearly the same as the ones currently in distribution, but were (as of Thursday) still undetected by any antivirus software.\n\n## The vulnerabilities had been fixed\u2026 sort of\n\nThe first vulnerability used by the malware was CVE-2021-1789, which was a remote code execution (RCE) vulnerability in WebKit. This means that it allowed an attacker to trick WebKit - the foundation of Safari and a number of other browsers - into executing arbitrary code, which is not supposed to be possible.\n\nThe second vulnerability, CVE-2021-30869, was a privilege escalation bug. This means that it could be used to run arbitrary code with the highest level of permissions possible when it should not actually have that level of access.\n\nThe first of these was patched on February 1, with the release of [macOS Big Sur 11.2](<https://support.apple.com/en-us/HT212147>) and [Safari 14.0.3](<https://support.apple.com/en-us/HT212152>). The latter would have fixed the problem on macOS Catalina (10.15) and macOS Mojave (10.14), if users had upgraded to Safari 14.\n\nThe second was apparently also fixed in Big Sur 11.2, on February 1, although it was not originally mentioned in the release notes. Mention of the fix was added on September 23, after Google alerted Apple to the issue and on the same day Apple released [Security Update 2021-006 Catalina](<https://support.apple.com/en-us/HT212825>), to fix the issue in macOS Catalina.\n\n\n\n## Catalina wasn&#x27;t fixed for more than seven months?!\n\nYes, you heard that right. Apple knew about the vulnerability long before, and fixed it in macOS Big Sur, after the team who found it, Pangu, alerted Apple of the issue. Pangu went on to [present their findings](<https://github.com/wangtielei/Slides/blob/main/zer0con21.pdf>) in April at the Zer0con security conference.\n\nHowever, the same bug apparently existed in Catalina, which remained unpatched seven months after Apple released the patch for Big Sur, and more than five months after the details had been released at Zer0con. This allowed attackers to target individuals running Catalina and Safari 13 without detection. (According to TAG, more than 200 machines may have been targeted for infection at the time it discovered the campaign.)\n\nThere&#x27;s a lot that&#x27;s unclear about why this might have happened. Did Apple know that the bug affected Catalina, but chose not to patch it? Was the bug superficially different in Catalina, and thus was missed in a cursory investigation? Or was the bug completely different, but resulted in the same vulnerability? Only Apple could say.\n\nI do find it highly suspicious that mention of this fix was left off of the Big Sur 11.2 release notes, and then added at the end at the same time the bug was fixed in Catalina. That would seem to suggest that it&#x27;s something that Apple already knew should have been fixed, or very quickly identified as being the same as the Big Sur bug.\n\n## Takeaways\n\nThere are a couple things that this incident illustrates quite plainly. First, this throws further weight behind what Joshua Long has taught us; that Apple can only be relied on to patch the absolute latest version of macOS, which is currently macOS Monterey (12). If you are using an older system, you do so at your own risk.\n\nI personally have an older machine still on macOS Mojave, because upgrading to anything newer means I&#x27;d lose access to all my old 32-bit Steam games. However, since I&#x27;m aware that that system can no longer be considered secure, I limit what I do with it. Any web browsing and other online activities are done with my up-to-date devices, and since I&#x27;ve recently migrated to a newer machine, I&#x27;ll soon remove my personal data from the Mojave machine.\n\nSecond, the fact that this malware went undetected since at least 2019 is, unfortunately, a repeating pattern. There has been a lot of very tightly targeted nation state malware affecting Mac users, and because of the very limited number of victims, it&#x27;s hard to detect. Those managing business environments would do well to use some kind of EDR or other monitoring software, but what is an average person to do with their personal Macs?\n\nSome steps you can take to avoid this kind of malware would include:\n\n * Keeping your system and all your software fully up to date\n * Be conscious of everything you open on your computer, and be sure you know exactly what it is before you do so\n * Never install Adobe Flash Player, whether you think it&#x27;s legitimate or not!\n * Use an ad blocker (malicious ads can be a source of malware) and some kind of protection against malicious sites, such as the free [Malwarebytes Browser Guard](<https://malwarebytes.com/browserguard/>)\n * If you engage in any &quot;risky&quot; activities, consider doing them from a burner device with no access to your data, such as a cheap Chromebook\n * If you are a potential target of a hostile nation-state - such as a journalist or human rights activists critical of an oppressive regime, or a member of a group persecuted by a government (such as the Uyghur people in China) - consider consulting with a security professional\n\n[Malwarebytes for Mac](<https://malwarebytes.com/mac>) detects this malware as OSX.CDDS.\n\nThe post [New Mac malware raises more questions about Apple&#x27;s security patching](<https://blog.malwarebytes.com/malwarebytes-news/2021/11/new-mac-malware-raises-more-questions-about-apples-security-patching/>) appeared first on [Malwarebytes Labs](<https://blog.malwarebytes.com>).", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2021-11-16T10:56:31", "type": "malwarebytes", "title": "New Mac malware raises more questions about Apple\u2019s security patching", "bulletinFamily": "blog", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "baseScore": 6.8, "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 6.4, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1789", "CVE-2021-30869"], "modified": "2021-11-16T10:56:31", "id": "MALWAREBYTES:14915FF4E57ACC97AA20EBE2BC02B8F3", "href": "https://blog.malwarebytes.com/malwarebytes-news/2021/11/new-mac-malware-raises-more-questions-about-apples-security-patching/", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2022-01-26T23:27:09", "description": "[DazzleSpy, a piece of malware that attacks macOS, was discovered](<https://www.welivesecurity.com/2022/01/25/watering-hole-deploys-new-macos-malware-dazzlespy-asia/>) last fall by researchers at ESET, and now those researchers have released more detailed findings. \n\nDazzleSpy, according to the researchers at ESET, was being spread via watering hole attacks via pro-democracy websites in China. It infected machines using a combination of two vulnerabilities, one in WebKit (the framework that powers Safari) and one in macOS (a privilege escalation vulnerability).\n\nNow, if this sounds familiar, it&#x27;s because you&#x27;ve been paying attention\u2014this is [exactly the same technique](<https://blog.malwarebytes.com/malwarebytes-news/2021/11/new-mac-malware-raises-more-questions-about-apples-security-patching/>) as that used by the CDDS (aka Macma) malware that was described by Google in November, even down to spreading through Chinese pro-democracy sites.\n\nThe new malware got a foothold via CVE-2021-1789, exploited via a JavaScript file named `mac.js` loaded by the malicious site. This led to the in-memory execution of native Mac code, which exploits CVE-2021-30869 to gain root privileges. With this high level of privileges, the malware drops its payload onto the machine.\n\nThat payload is a very full-featured backdoor, providing the attacker the capability to run any arbitrary command on the infected Mac, start a remote screen viewing session, download files from the Mac, steal the keychain, send synthetic mouse clicks, etc. The full list of capabilities is a bit different than what Google described for CDDS, but it&#x27;s important to keep in mind that arbitrary shell command execution is an extremely powerful capability. Although the DazzleSpy implant doesn&#x27;t directly support taking screenshots, for example, that&#x27;s not hard to do via the `screencapture` command in the shell.\n\n\n\n## Are CDDS and DazzleSpy the same?\n\nThese two pieces of malware are quite different. The code is very different, and the capabilities are different. They&#x27;re also very different in terms of what gets installed. CDDS, for example, distributes multiple executable files across a couple different folders, while the DazzleSpy payload is a single, smaller file (which may optionally also install the open-source KeySteal exploit on older systems, in order to steal keychain data).\n\nThus, there&#x27;s little doubt that these are distinctly different malware, written from different code bases.\n\nHowever, since both were distributed through the same two macOS vulnerabilities, through pro-democracy websites in China, it&#x27;s highly likely these are made by the same folks. The most likely scenario is that this is Chinese government malware, being used for the purpose of tracking democracy advocates.\n\nWhy there would be a need for two different pieces of malware is unclear. Perhaps there was some dissatisfaction with the CDDS code, so new malware was written. Perhaps both were run concurrently to see which performed better. Perhaps it&#x27;s part of a plan to change the code periodically as a means of avoiding detection.\n\nThen again, perhaps the similarities in usage don&#x27;t actually indicate anything at all.\n\n## Can we blame the Chinese government?\n\nAttribution is hard, and it&#x27;s very difficult to say where a particular malware sample originated without a lot of corroborating data. For example, threat actors have been known to insert Chinese- or Russian-language strings into executables in an attempt at misdirection.\n\nHowever, there&#x27;s a long history of suspected Chinese government use of malware to track oppressed groups, spanning many years. To cite one example, a very similar case occurred in early 2012, in which two different pieces of malware were discovered using Java vulnerabilities to infect Macs. [Tibet (aka MaControl)](<https://www.thesafemac.com/new-malware-targets-tibet/>), discovered in March 2012, and [Sabpab](<https://www.thesafemac.com/sabpab-malware-mimics-flashback/>), discovered in April 2012, were both used to target Tibetan activists, at a time when Tibetan protests of Chinese government oppression were at a peak.\n\nIn the case of DazzleSpy, the presence of Chinese strings in the executable are far from incontrovertible evidence of Chinese government involvement. The pattern of usage, though, makes it extremely likely.\n\n## Mac malware gets an early start in 2022\n\nDazzleSpy is actually not the first new Mac malware to appear so far this year, despite the fact that it&#x27;s only January. [SysJoker](<https://www.intezer.com/blog/malware-analysis/new-backdoor-sysjoker/>) coverage appeared a couple weeks before. Discovered by Intezer during an investigation into a Linux server infection, this was the official first Mac malware of 2022. However, there are some questions about whether this is actually in the wild - questions that are borne out by the lack of any detections at all in the wild. This may have been a proof-of-concept for Mac that hadn&#x27;t actually been released yet. (Malware creators sometimes upload early builds of their malware to VirusTotal, to see if any antivirus engines detect them, which can lead to discovery of those pre-release programs by researchers.)\n\nIt&#x27;s too early to make any assumptions about what this means for malware in 2022, though. It&#x27;s not uncommon for Mac malware research to follow a pattern of multiple discoveries early in the new year, followed by less frequent discoveries as the year continues.\n\n## Conclusion\n\nIf you have visited a pro-democracy Chinese website and think you might be infected, run a scan with Malwarebytes. It will detect this as OSX.DazzleSpy.\n\nAlternately, you can also look for it manually. The items you&#x27;re most likely to see are:\n \n \n /var/root/Library/LaunchAgents/com.apple.softwareupdate.plist\n /var/root/.local/\n\nThis plist file and the `.local` folder are created by the malware when run as root, and the vulnerabilities used to drop the malware do involve root escalation. This is also a good place to drop these files, as it&#x27;s a location you cannot view within the Finder. You can only access the contents of `/var/root/` by using something that operates as the root user, such as `sudo` on the command line.\n\nHowever, it&#x27;s also possible the malware could get dropped into the user folder, in which case you&#x27;ll see these paths instead:\n \n \n ~/Library/LaunchAgents/com.apple.softwareupdate.plist\n ~/.local/\n\nThe post [New DazzleSpy malware attacks macOS](<https://blog.malwarebytes.com/malwarebytes-news/2022/01/new-dazzlespy-malware-attacks-macos/>) appeared first on [Malwarebytes Labs](<https://blog.malwarebytes.com>).", "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "integrityImpact": "HIGH", "baseScore": 8.8, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 5.9}, "published": "2022-01-26T22:12:25", "type": "malwarebytes", "title": "New DazzleSpy malware attacks macOS", "bulletinFamily": "blog", "cvss2": {"severity": "HIGH", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "COMPLETE", "availabilityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "baseScore": 9.3, "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 10.0, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1789", "CVE-2021-30869"], "modified": "2022-01-26T22:12:25", "id": "MALWAREBYTES:0079CEF25A0437ABF44F7A82C3D13ABD", "href": "https://blog.malwarebytes.com/malwarebytes-news/2022/01/new-dazzlespy-malware-attacks-macos/", "cvss": {"score": 9.3, "vector": "AV:N/AC:M/Au:N/C:C/I:C/A:C"}}, {"lastseen": "2021-02-22T13:33:51", "description": "Last week on Malwarebytes Labs, the spotlight fell on [the State of Malware 2021 report](<https://blog.malwarebytes.com/reports/2021/02/state-of-malware-2021-report/>), wherein we have seen cyberthreats evolve.\n\nWe also touched on ransomware, such as [Egregor](<https://blog.malwarebytes.com/ransomware/2021/02/egregor-ransomware-hit-by-arrests/>) and [a tactic](<https://blog.malwarebytes.com/malwarebytes-news/2021/02/rdp-the-ransomware-problem-that-wont-go-away/>) known as Remote Desktop Protocol (RDP) brute forcing that has long been part of the ransomware operators&#x27; toolkit; insider threats, such as [what Yandex recently experienced](<https://blog.malwarebytes.com/awareness/2021/02/yandex-sysadmin-caught-selling-access-to-email-accounts/>) with one of its own sysadmins; [romance scams](<https://blog.malwarebytes.com/privacy-2/2021/02/romance-scams-ftc-reveals-304-million-of-heartache/>); and put social media under scrutiny\u2014looking at you, [Clubhouse](<https://blog.malwarebytes.com/awareness/2021/02/clubhouse-under-scrutiny-for-sending-data-to-chinese-servers/>) and [Omegle](<https://blog.malwarebytes.com/awareness/2021/02/omegle-investigation-raises-new-concerns-for-kids-safety/>); [some wins](<https://blog.malwarebytes.com/awareness/2021/02/north-korean-hackers-charged-with-1-3-billion-of-cyberheists/>) for the good guys; and course, [Cyberpunk 2077](<https://blog.malwarebytes.com/malwarebytes-news/2021/02/cybersecurity-in-cyberpunk-2077-the-good-the-bad-and-the-cringeworthy/>). \n\n### Other cybersecurity news\n\n * Following the water supply hack in a Florida city, the US government [warned](<https://www.securityweek.com/us-gov-warning-water-supply-hack-get-rid-windows-7>) critical infrastructure operators to upgrade their Windows 7 operating systems. (Source: Security Week)\n * Baby monitor vulnerabilities are in the spotlight once again after the cybersecurity team at SafetyDetectives, an independent review site, [unearthed a flaw](<https://www.safetydetectives.com/blog/babymonitor-exposed-report/>) that allows miscreants to take over a camera\u2019s video stream. (Source: SafetyDetectives)\n * Phishers used [&quot;financial bonus&quot; as lure](<https://www.zdnet.com/article/this-phishing-email-promises-you-a-bonus-but-actually-delivers-this-windows-trojan-malware/>) to deliver the Bazar Trojan. (Source: ZDNet)\n * Speaking of phishing scams, they&#x27;re also promising free COVID vaccines. [Again](<https://www.infosecurity-magazine.com/news/nhs-phishing-scam-promises-covid19/>). (Source: Infosecurity Magazine)\n * Intelligence officials from South Korea claimed that North Korea is behind the [COVID vaccine cyberattack](<https://www.computerweekly.com/news/252496416/North-Korea-accused-of-Pfizer-Covid-vaccine-cyber-attack>) against Pfizer. (Source: Computer Weekly)\n * A flaw in Agora, a voice and video platform, was discovered that could allow attackers to [spy on private calls](<https://www.cyberscoop.com/flaw-agora-video-calling-software-eavesdroppers/>). (Source: CyberScoop)\n * Palo Alto\u2019s Unit42 uncovered [a cryptojacking ](<https://unit42.paloaltonetworks.com/watchdog-cryptojacking/>)[c](<https://unit42.paloaltonetworks.com/watchdog-cryptojacking/>)[ampaign](<https://unit42.paloaltonetworks.com/watchdog-cryptojacking/>) that has been in operation for the last couple of years. (Source: Palo Alto Networks)\n * [ScamClub](<https://blog.confiant.com/malvertiser-scamclub-bypasses-iframe-sandboxing-with-postmessage-shenanigans-cve-2021-1801-1c998378bfba>), a malvertising group, was discovered using an iPhone browser bug to push ads. (Source: Confiant)\n * With the introduction of Apple\u2019s M1 computer processors, [new malware](<https://www.vice.com/en/article/v7mnk4/hackers-are-starting-to-code-malware-specifically-for-apples-m1-computers>) made for them is starting to emerge. (Source: Motherboard)\n\nStay safe, everyone!\n\nThe post [A week in security (February 15 \u2013 February 21)](<https://blog.malwarebytes.com/a-week-in-security/2021/02/a-week-in-security-february-15-february-21/>) appeared first on [Malwarebytes Labs](<https://blog.malwarebytes.com>).", "edition": 2, "cvss3": {"exploitabilityScore": 2.8, "cvssV3": {"baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "attackComplexity": "LOW", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "HIGH", "baseScore": 6.5, "privilegesRequired": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "userInteraction": "REQUIRED", "version": "3.1"}, "impactScore": 3.6}, "published": "2021-02-22T11:37:19", "type": "malwarebytes", "title": "A week in security (February 15 \u2013 February 21)", "bulletinFamily": "blog", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": true, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "NONE", "availabilityImpact": "NONE", "integrityImpact": "PARTIAL", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2021-1801"], "modified": "2021-02-22T11:37:19", "id": "MALWAREBYTES:571F8A177DE5469D82A8C2F7E8BE43CB", "href": "https://blog.malwarebytes.com/a-week-in-security/2021/02/a-week-in-security-february-15-february-21/", "cvss": {"score": 0.0, "vector": "NONE"}}], "googleprojectzero": [{"lastseen": "2023-05-28T02:00:41", "description": "Posted by Ian Beer, Google Project Zero\n\nThis blog post is my analysis of a vulnerability exploited in the wild and patched in early 2021. Like the [writeup published last week](<https://googleprojectzero.blogspot.com/2022/04/cve-2021-30737-xerubs-2021-ios-asn1.html>) looking at an ASN.1 parser bug, this blog post is based on the notes I took as I was analyzing the patch and trying to understand the XNU vouchers subsystem. I hope that this writeup serves as the missing documentation for how some of the internals of the voucher subsystem works and its quirks which lead to this vulnerability.\n\nCVE-2021-1782 was fixed in iOS 14.4, as noted by [@s1guza on twitter](<https://twitter.com/s1guza/status/1354575808547999744>):\n\n[](<https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhTx_FjnSHTtPtnk2F1K8-AYcTnVrIBNV8PNJQgZCOhfoIvU6hD7teqA3Jmb8T8KtIpnIYKuUqa28P-pt-yM2zUsWppkcmdx18pAP8r0XTQH4JHAhpNZkC2uALpz_Pn5_OXK3mXlblNG1i6TIEtLsksgez8GlLTi2zuxP0haGXzaU1XGEj2RQeNjOto/s1182/image1%20%283%29%281%29.png>)\n\nThis vulnerability was fixed on January 26th 2021, and Apple updated the iOS 14.4 release notes on May 28th 2021 to indicate that the issue may have been actively exploited:\n\n[](<https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgz_bD89bznHVJLkW_Kbwy-1JEoHaUyMfeaqDbpVjRTQ366r8ywGgSGps2aPyFa05wBuKWqAi2hJmm76dnbcgoV4YCFug4UWu3OhkHPgKjg6coamg35AId8VsOw5gkIHldyvefgRSX0klbhJ275wnwri6dzSTb_OZwwz2LeUeVjmHIAPsyirypsYonn/s1660/image2%20%282%29%281%29.png>)\n\n## Vouchers\n\nWhat exactly is a voucher?\n\nThe kernel code has a concise description:\n\nVouchers are a reference counted immutable (once-created) set of indexes to particular resource manager attribute values (which themselves are reference counted).\n\nThat definition is technically correct, though perhaps not all that helpful by itself.\n\nTo actually understand the root cause and exploitability of this vulnerability is going to require covering a lot of the voucher codebase. This part of XNU is pretty obscure, and pretty complicated.\n\nA voucher is a reference-counted table of keys and values. Pointers to all created vouchers are stored in the global ivht_bucket hash table.\n\nFor a particular set of keys and values there should only be one voucher object. During the creation of a voucher there is a deduplication stage where the new voucher is compared against all existing vouchers in the hashtable to ensure they remain unique, returning a reference to the existing voucher if a duplicate has been found.\n\nHere's the structure of a voucher:\n\nstruct ipc_voucher {\n\niv_index_t iv_hash; /* checksum hash */\n\niv_index_t iv_sum; /* checksum of values */\n\nos_refcnt_t iv_refs; /* reference count */\n\niv_index_t iv_table_size; /* size of the voucher table */\n\niv_index_t iv_inline_table[IV_ENTRIES_INLINE];\n\niv_entry_t iv_table; /* table of voucher attr entries */\n\nipc_port_t iv_port; /* port representing the voucher */\n\nqueue_chain_t iv_hash_link; /* link on hash chain */\n\n};\n\n#define IV_ENTRIES_INLINE MACH_VOUCHER_ATTR_KEY_NUM_WELL_KNOWN \n \n--- \n \nThe voucher codebase is written in a very generic, extensible way, even though its actual use and supported feature set is quite minimal.\n\n## Keys\n\nKeys in vouchers are not arbitrary. Keys are indexes into a voucher's iv_table; a value's position in the iv_table table determines what \"key\" it was stored under. Whilst the vouchers codebase supports the runtime addition of new key types this feature isn't used and there are just a small number of fixed, well-known keys:\n\n#define MACH_VOUCHER_ATTR_KEY_ALL ((mach_voucher_attr_key_t)~0)\n\n#define MACH_VOUCHER_ATTR_KEY_NONE ((mach_voucher_attr_key_t)0)\n\n/* other well-known-keys will be added here */\n\n#define MACH_VOUCHER_ATTR_KEY_ATM ((mach_voucher_attr_key_t)1)\n\n#define MACH_VOUCHER_ATTR_KEY_IMPORTANCE ((mach_voucher_attr_key_t)2)\n\n#define MACH_VOUCHER_ATTR_KEY_BANK ((mach_voucher_attr_key_t)3)\n\n#define MACH_VOUCHER_ATTR_KEY_PTHPRIORITY ((mach_voucher_attr_key_t)4)\n\n#define MACH_VOUCHER_ATTR_KEY_USER_DATA ((mach_voucher_attr_key_t)7)\n\n#define MACH_VOUCHER_ATTR_KEY_TEST ((mach_voucher_attr_key_t)8)\n\n#define MACH_VOUCHER_ATTR_KEY_NUM_WELL_KNOWN MACH_VOUCHER_ATTR_KEY_TEST \n \n--- \n \nThe iv_inline_table in an ipc_voucher has 8 entries. But of those, only four are actually supported and have any associated functionality. The ATM voucher attributes are deprecated and the code supporting them is gone so only IMPORTANCE (2), BANK (3), PTHPRIORITY (4) and USER_DATA (7) are valid keys. There's some confusion (perhaps on my part) about when exactly you should use the term key and when attribute; I'll use them interchangeably to refer to these key values and the corresponding \"types\" of values which they manage. More on that later.\n\n## Values\n\nEach entry in a voucher iv_table is an iv_index_t:\n\ntypedef natural_t iv_index_t; \n \n--- \n \nEach value is again an index; this time into a per-key cache of values, abstracted as a \"Voucher Attribute Cache Control Object\" represented by this structure:\n\nstruct ipc_voucher_attr_control {\n\nos_refcnt_t ivac_refs;\n\nboolean_t ivac_is_growing; /* is the table being grown */\n\nivac_entry_t ivac_table; /* table of voucher attr value entries */\n\niv_index_t ivac_table_size; /* size of the attr value table */\n\niv_index_t ivac_init_table_size; /* size of the attr value table */\n\niv_index_t ivac_freelist; /* index of the first free element */\n\nipc_port_t ivac_port; /* port for accessing the cache control */\n\nlck_spin_t ivac_lock_data;\n\niv_index_t ivac_key_index; /* key index for this value */\n\n}; \n \n--- \n \nThese are accessed indirectly via another global table:\n\nstatic ipc_voucher_global_table_element iv_global_table[MACH_VOUCHER_ATTR_KEY_NUM_WELL_KNOWN]; \n \n--- \n \n(Again, the comments in the code indicate that in the future that this table may grow in size and allow attributes to be managed in userspace, but for now it's just a fixed size array.)\n\nEach element in that table has this structure:\n\ntypedef struct ipc_voucher_global_table_element {\n\nipc_voucher_attr_manager_t ivgte_manager;\n\nipc_voucher_attr_control_t ivgte_control;\n\nmach_voucher_attr_key_t ivgte_key;\n\n} ipc_voucher_global_table_element; \n \n--- \n \nBoth the iv_global_table and each voucher's iv_table are indexed by (key-1), not key, so the userdata entry is [6], not [7], even though the array still has 8 entries.\n\nThe ipc_voucher_attr_control_t provides an abstract interface for managing \"values\" and the ipc_voucher_attr_manager_t provides the \"type-specific\" logic to implement the semantics of each type (here by type I mean \"key\" or \"attr\" type.) Let's look more concretely at what that means. Here's the definition of ipc_voucher_attr_manager_t:\n\nstruct ipc_voucher_attr_manager {\n\nipc_voucher_attr_manager_release_value_t ivam_release_value;\n\nipc_voucher_attr_manager_get_value_t ivam_get_value;\n\nipc_voucher_attr_manager_extract_content_t ivam_extract_content;\n\nipc_voucher_attr_manager_command_t ivam_command;\n\nipc_voucher_attr_manager_release_t ivam_release;\n\nipc_voucher_attr_manager_flags ivam_flags;\n\n}; \n \n--- \n \nivam_flags is an int containing some flags; the other five fields are function pointers which define the semantics of the particular attr type. Here's the ipc_voucher_attr_manager structure for the user_data type:\n\nconst struct ipc_voucher_attr_manager user_data_manager = {\n\n.ivam_release_value = user_data_release_value,\n\n.ivam_get_value = user_data_get_value,\n\n.ivam_extract_content = user_data_extract_content,\n\n.ivam_command = user_data_command,\n\n.ivam_release = user_data_release,\n\n.ivam_flags = IVAM_FLAGS_NONE,\n\n}; \n \n--- \n \nThose five function pointers are the only interface from the generic voucher code into the type-specific code. The interface may seem simple but there are some tricky subtleties in there; we'll get to that later!\n\nLet's go back to the generic ipc_voucher_attr_control structure which maintains the \"values\" for each key in a type-agnostic way. The most important field is ivac_entry_t ivac_table, which is an array of ivac_entry_s's. It's an index into this table which is stored in each voucher's iv_table.\n\nHere's the structure of each entry in that table:\n\nstruct ivac_entry_s {\n\niv_value_handle_t ivace_value;\n\niv_value_refs_t ivace_layered:1, /* layered effective entry */\n\nivace_releasing:1, /* release in progress */\n\nivace_free:1, /* on freelist */\n\nivace_persist:1, /* Persist the entry, don't\n\ncount made refs */\n\nivace_refs:28; /* reference count */\n\nunion {\n\niv_value_refs_t ivaceu_made; /* made count (non-layered) */\n\niv_index_t ivaceu_layer; /* next effective layer\n\n(layered) */\n\n} ivace_u;\n\niv_index_t ivace_next; /* hash or freelist */\n\niv_index_t ivace_index; /* hash head (independent) */\n\n}; \n \n--- \n \nivace_refs is a reference count for this table index. Note that this entry is inline in an array; so this reference count going to zero doesn't cause the ivac_entry_s to be free'd back to a kernel allocator (like the zone allocator for example.) Instead, it moves this table index onto a freelist of empty entries. The table can grow but never shrink.\n\nTable entries which aren't free store a type-specific \"handle\" in ivace_value. Here's the typedef chain for that type:\n\niv_value_handle_t ivace_value\n\ntypedef mach_voucher_attr_value_handle_t iv_value_handle_t;\n\ntypedef uint64_t mach_voucher_attr_value_handle_t; \n \n--- \n \nThe handle is a uint64_t but in reality the attrs can (and do) store pointers there, hidden behind casts.\n\nA guarantee made by the attr_control is that there will only ever be one (live) ivac_entry_s for a particular ivace_value. This means that each time a new ivace_value needs an ivac_entry the attr_control's ivac_table needs to be searched to see if a matching value is already present. To speed this up in-use ivac_entries are linked together in hash buckets so that a (hopefully significantly) shorter linked-list of entries can be searched rather than a linear scan of the whole table. (Note that it's not a linked-list of pointers; each link in the chain is an index into the table.)\n\n## Userdata attrs\n\nuser_data is one of the four types of supported, implemented voucher attr types. It's only purpose is to manage buffers of arbitrary, user controlled data. Since the attr_control performs deduping only on the ivace_value (which is a pointer) the userdata attr manager is responsible for ensuring that userdata values which have identical buffer values (matching length and bytes) have identical pointers.\n\nTo do this it maintains a hash table of user_data_value_element structures, which wrap a variable-sized buffer of bytes:\n\nstruct user_data_value_element {\n\nmach_voucher_attr_value_reference_t e_made;\n\nmach_voucher_attr_content_size_t e_size;\n\niv_index_t e_sum;\n\niv_index_t e_hash;\n\nqueue_chain_t e_hash_link;\n\nuint8_t e_data[];\n\n}; \n \n--- \n \nEach inline e_data buffer can be up to 16KB. e_hash_link stores the hash-table bucket list pointer.\n\ne_made is not a simple reference count. Looking through the code you'll notice that there are no places where it's ever decremented. Since there should (nearly) always be a 1:1 mapping between an ivace_entry and a user_data_value_element this structure shouldn't need to be reference counted. There is however one very fiddly race condition (which isn't the race condition which causes the vulnerability!) which necessitates the e_made field. This race condition is sort-of documented and we'll get there eventually...\n\n## Recipes\n\nThe host_create_mach_voucher host port MIG ([Mach Interface Generator](<https://www.nextop.de/NeXTstep_3.3_Developer_Documentation/OperatingSystem/Part1_Mach/02_Messages/Messages.htmld/index.html>)) method is the userspace interface for creating vouchers:\n\nkern_return_t\n\nhost_create_mach_voucher(mach_port_name_t host,\n\nmach_voucher_attr_raw_recipe_array_t recipes,\n\nmach_voucher_attr_recipe_size_t recipesCnt,\n\nmach_port_name_t *voucher); \n \n--- \n \nrecipes points to a buffer filled with a sequence of packed variable-size mach_voucher_attr_recipe_data structures:\n\ntypedef struct mach_voucher_attr_recipe_data {\n\nmach_voucher_attr_key_t key;\n\nmach_voucher_attr_recipe_command_t command;\n\nmach_voucher_name_t previous_voucher;\n\nmach_voucher_attr_content_size_t content_size;\n\nuint8_t content[];\n\n} mach_voucher_attr_recipe_data_t; \n \n--- \n \nkey is one of the four supported voucher attr types we've seen before (importance, bank, pthread_priority and user_data) or a wildcard value (MACH_VOUCHER_ATTR_KEY_ALL) indicating that the command should apply to all keys. There are a number of generic commands as well as type-specific commands. Commands can optionally refer to existing vouchers via the previous_voucher field, which should name a voucher port.\n\nHere are the supported generic commands for voucher creation:\n\nMACH_VOUCHER_ATTR_COPY: copy the attr value from the previous voucher. You can specify the wildcard key to copy all the attr values from the previous voucher.\n\nMACH_VOUCHER_ATTR_REMOVE: remove the specified attr value from the voucher under construction. This can also remove all the attributes from the voucher under construction (which, arguably, makes no sense.)\n\nMACH_VOUCHER_ATTR_SET_VALUE_HANDLE: this command is only valid for kernel clients; it allows the caller to specify an arbitrary ivace_value, which doesn't make sense for userspace and shouldn't be reachable.\n\nMACH_VOUCHER_ATTR_REDEEM: the semantics of redeeming an attribute from a previous voucher are not defined by the voucher code; it's up to the individual managers to determine what that might mean.\n\nHere are the attr-specific commands for voucher creation for each type:\n\nbank:\n\nMACH_VOUCHER_ATTR_BANK_CREATE\n\nMACH_VOUCHER_ATTR_BANK_MODIFY_PERSONA\n\nMACH_VOUCHER_ATTR_AUTO_REDEEM\n\nMACH_VOUCHER_ATTR_SEND_PREPROCESS\n\nimportance:\n\nMACH_VOUCHER_ATTR_IMPORTANCE_SELF\n\nuser_data:\n\nMACH_VOUCHER_ATTR_USER_DATA_STORE\n\npthread_priority:\n\nMACH_VOUCHER_ATTR_PTHPRIORITY_CREATE\n\nNote that there are further commands which can be \"executed against\" vouchers via the mach_voucher_attr_command MIG method which calls the attr manager's ivam_command function pointer. Those are:\n\nbank:\n\nBANK_ORIGINATOR_PID\n\nBANK_PERSONA_TOKEN\n\nBANK_PERSONA_ID\n\nimportance:\n\nMACH_VOUCHER_IMPORTANCE_ATTR_DROP_EXTERNAL\n\nuser_data:\n\nnone\n\npthread_priority:\n\nnone\n\nLet's look at example recipe for creating a voucher with a single user_data attr, consisting of the 4 bytes {0x41, 0x41, 0x41, 0x41}:\n\nstruct udata_dword_recipe {\n\nmach_voucher_attr_recipe_data_t recipe;\n\nuint32_t payload;\n\n};\n\nstruct udata_dword_recipe r = {0};\n\nr.recipe.key = MACH_VOUCHER_ATTR_KEY_USER_DATA;\n\nr.recipe.command = MACH_VOUCHER_ATTR_USER_DATA_STORE;\n\nr.recipe.content_size = sizeof(uint32_t);\n\nr.payload = 0x41414141; \n \n--- \n \nLet's follow the path of this recipe in detail.\n\nHere's the most important part of host_create_mach_voucher showing the three high-level phases: voucher allocation, attribute creation and voucher de-duping. It's not the responsibility of this code to find or allocate a mach port for the voucher; that's done by the MIG layer code.\n\n/* allocate new voucher */\n\nvoucher = iv_alloc(ivgt_keys_in_use);\n\nif (IV_NULL == voucher) {\n\nreturn KERN_RESOURCE_SHORTAGE;\n\n}\n\n/* iterate over the recipe items */\n\nwhile (0 &lt; recipe_size - recipe_used) {\n\nipc_voucher_t prev_iv;\n\nif (recipe_size - recipe_used &lt; sizeof(*sub_recipe)) {\n\nkr = KERN_INVALID_ARGUMENT;\n\nbreak;\n\n}\n\n/* find the next recipe */\n\nsub_recipe =\n\n(mach_voucher_attr_recipe_t)(void *)&amp;recipes[recipe_used];\n\nif (recipe_size - recipe_used - sizeof(*sub_recipe) &lt;\n\nsub_recipe-&gt;content_size) {\n\nkr = KERN_INVALID_ARGUMENT;\n\nbreak;\n\n}\n\nrecipe_used += sizeof(*sub_recipe) + sub_recipe-&gt;content_size;\n\n/* convert voucher port name (current space) */\n\n/* into a voucher reference */\n\nprev_iv =\n\nconvert_port_name_to_voucher(sub_recipe-&gt;previous_voucher);\n\nif (MACH_PORT_NULL != sub_recipe-&gt;previous_voucher &amp;&amp;\n\nIV_NULL == prev_iv) {\n\nkr = KERN_INVALID_CAPABILITY;\n\nbreak;\n\n}\n\nkr = ipc_execute_voucher_recipe_command(\n\nvoucher,\n\nsub_recipe-&gt;key,\n\nsub_recipe-&gt;command,\n\nprev_iv,\n\nsub_recipe-&gt;content,\n\nsub_recipe-&gt;content_size,\n\nFALSE);\n\nipc_voucher_release(prev_iv);\n\nif (KERN_SUCCESS != kr) {\n\nbreak;\n\n}\n\n}\n\nif (KERN_SUCCESS == kr) {\n\n*new_voucher = iv_dedup(voucher);\n\n} else {\n\n*new_voucher = IV_NULL;\n\niv_dealloc(voucher, FALSE);\n\n} \n \n--- \n \nAt the top of this snippet a new voucher is allocated in iv_alloc. ipc_execute_voucher_recipe_command is then called in a loop to consume however many sub-recipe structures were provided by userspace. Each sub-recipe can optionally refer to an existing voucher via the sub-recipe previous_voucher field. Note that MIG doesn't natively support variable-sized structures containing ports so it's passed as a mach port name which is looked up in the calling task's mach port namespace and converted to a voucher reference by convert_port_name_to_voucher. The intended functionality here is to be able to refer to attrs in other vouchers to copy or \"redeem\" them. As discussed, the semantics of redeeming a voucher attr isn't defined by the abstract voucher code and it's up to the individual attr managers to decide what that means.\n\nOnce the entire recipe has been consumed and all the iv_table entries filled in, iv_dedup then searches the ivht_bucket hash table to see if there's an existing voucher with a matching set of attributes. Remember that each attribute value stored in a voucher is an index into the attribute controller's attribute table; and those attributes are unique, so it suffices to simply compare the array of voucher indexes to determine whether all attribute values are equal. If a matching voucher is found, iv_dedup returns a reference to the existing voucher and calls iv_dealloc to free the newly created newly-created voucher. Otherwise, if no existing, matching voucher is found, iv_dedup adds the newly created voucher to the ivht_bucket hash table.\n\nLet's look at ipc_execute_voucher_recipe_command which is responsible for filling in the requested entries in the voucher iv_table. Note that key and command are arbitrary, controlled dwords. content is a pointer to a buffer of controlled bytes, and content_size is the correct size of that input buffer. The MIG layer limits the overall input size of the recipe (which is a collection of sub-recipes) to 5260 bytes, and any input content buffers would have to fit in there.\n\nstatic kern_return_t\n\nipc_execute_voucher_recipe_command(\n\nipc_voucher_t voucher,\n\nmach_voucher_attr_key_t key,\n\nmach_voucher_attr_recipe_command_t command,\n\nipc_voucher_t prev_iv,\n\nmach_voucher_attr_content_t content,\n\nmach_voucher_attr_content_size_t content_size,\n\nboolean_t key_priv)\n\n{\n\niv_index_t prev_val_index;\n\niv_index_t val_index;\n\nkern_return_t kr;\n\nswitch (command) { \n \n--- \n \nMACH_VOUCHER_ATTR_USER_DATA_STORE isn't one of the switch statement case values here so the code falls through to the default case:\n\ndefault:\n\nkr = ipc_replace_voucher_value(voucher,\n\nkey,\n\ncommand,\n\nprev_iv,\n\ncontent,\n\ncontent_size);\n\nif (KERN_SUCCESS != kr) {\n\nreturn kr;\n\n}\n\nbreak;\n\n}\n\nreturn KERN_SUCCESS; \n \n--- \n \nHere's that code:\n\nstatic kern_return_t\n\nipc_replace_voucher_value(\n\nipc_voucher_t voucher,\n\nmach_voucher_attr_key_t key,\n\nmach_voucher_attr_recipe_command_t command,\n\nipc_voucher_t prev_voucher,\n\nmach_voucher_attr_content_t content,\n\nmach_voucher_attr_content_size_t content_size)\n\n{\n\n...\n\n/*\n\n* Get the manager for this key_index.\n\n* Returns a reference on the control.\n\n*/\n\nkey_index = iv_key_to_index(key);\n\nivgt_lookup(key_index, TRUE, &amp;ivam, &amp;ivac);\n\nif (IVAM_NULL == ivam) {\n\nreturn KERN_INVALID_ARGUMENT;\n\n}\n\n.. \n \n--- \n \niv_key_to_index just subtracts 1 from key (assuming it's valid and not MACH_VOUCHER_ATRR_KEY_ALL):\n\nstatic inline iv_index_t\n\niv_key_to_index(mach_voucher_attr_key_t key)\n\n{\n\nif (MACH_VOUCHER_ATTR_KEY_ALL == key ||\n\nMACH_VOUCHER_ATTR_KEY_NUM_WELL_KNOWN &lt; key) {\n\nreturn IV_UNUSED_KEYINDEX;\n\n}\n\nreturn (iv_index_t)key - 1;\n\n} \n \n--- \n \nivgt_lookup then gets a reference on that key's attr manager and attr controller. The manager is really just a bunch of function pointers which define the semantics of what different \"key types\" actually mean; and the controller stores (and caches) values for those keys.\n\nLet's keep reading ipc_replace_voucher_value. Here's the next statement:\n\n/* save the current value stored in the forming voucher */\n\nsave_val_index = iv_lookup(voucher, key_index); \n \n--- \n \nThis point is important for getting a good feeling for how the voucher code is supposed to work; recipes can refer not only to other vouchers (via the previous_voucher port) but they can also refer to themselves during creation. You don't have to have just one sub-recipe per attr type for which you wish to have a value in your voucher; you can specify multiple sub-recipes for that type. Does it actually make any sense to do that? Well, luckily for the security researcher we don't have to worry about whether functionality actually makes any sense; it's all just a weird machine to us! (There's allusions in the code to future functionality where attribute values can be \"layered\" or \"linked\" but for now such functionality doesn't exist.)\n\niv_lookup returns the \"value index\" for the given key in the particular voucher. That means it just returns the iv_index_t in the iv_table of the given voucher:\n\nstatic inline iv_index_t\n\niv_lookup(ipc_voucher_t iv, iv_index_t key_index)\n\n{\n\nif (key_index &lt; iv-&gt;iv_table_size) {\n\nreturn iv-&gt;iv_table[key_index];\n\n}\n\nreturn IV_UNUSED_VALINDEX;\n\n} \n \n--- \n \nThis value index uniquely identifies an existing attribute value, but you need to ask the attribute's controller for the actual value. Before getting that previous value though, the code first determines whether this sub-recipe might be trying to refer to the value currently stored by this voucher or has explicitly passed in a previous_voucher. The value in the previous voucher takes precedence over whatever is already in the under-construction voucher.\n\nprev_val_index = (IV_NULL != prev_voucher) ?\n\niv_lookup(prev_voucher, key_index) :\n\nsave_val_index; \n \n--- \n \nThen the code looks up the actual previous value to operate on:\n\nivace_lookup_values(key_index, prev_val_index,\n\nprevious_vals, &amp;previous_vals_count); \n \n--- \n \nkey_index is the key we're operating on, MACH_VOUCHER_ATTR_KEY_USER_DATA in this example. This function is called ivace_lookup_values (note the plural). There are some comments in the voucher code indicating that maybe in the future values could themselves be put into a linked-list such that you could have larger values (or layered/chained values.) But this functionality isn't implemented; ivace_lookup_values will only ever return 1 value.\n\nHere's ivace_lookup_values:\n\nstatic void\n\nivace_lookup_values(\n\niv_index_t key_index,\n\niv_index_t value_index,\n\nmach_voucher_attr_value_handle_array_t values,\n\nmach_voucher_attr_value_handle_array_size_t *count)\n\n{\n\nipc_voucher_attr_control_t ivac;\n\nivac_entry_t ivace;\n\nif (IV_UNUSED_VALINDEX == value_index ||\n\nMACH_VOUCHER_ATTR_KEY_NUM_WELL_KNOWN &lt;= key_index) {\n\n*count = 0;\n\nreturn;\n\n}\n\nivac = iv_global_table[key_index].ivgte_control;\n\nassert(IVAC_NULL != ivac);\n\n/*\n\n* Get the entry and then the linked values.\n\n*/\n\nivac_lock(ivac);\n\nassert(value_index &lt; ivac-&gt;ivac_table_size);\n\nivace = &amp;ivac-&gt;ivac_table[value_index];\n\n/*\n\n* TODO: support chained values (for effective vouchers).\n\n*/\n\nassert(ivace-&gt;ivace_refs &gt; 0);\n\nvalues[0] = ivace-&gt;ivace_value;\n\nivac_unlock(ivac);\n\n*count = 1;\n\n} \n \n--- \n \nThe locking used in the vouchers code is very important for properly understanding the underlying vulnerability when we eventually get there, but for now I'm glossing over it and we'll return to examine the relevant locks when necessary.\n\nLet's discuss the ivace_lookup_values code. They index the iv_global_table to get a pointer to the attribute type's controller:\n\nivac = iv_global_table[key_index].ivgte_control; \n \n--- \n \nThey take that controller's lock then index its ivac_table to find that value's struct ivac_entry_s and read the ivace_value value from there:\n\nivac_lock(ivac);\n\nassert(value_index &lt; ivac-&gt;ivac_table_size);\n\nivace = &amp;ivac-&gt;ivac_table[value_index];\n\nassert(ivace-&gt;ivace_refs &gt; 0);\n\nvalues[0] = ivace-&gt;ivace_value;\n\nivac_unlock(ivac);\n\n*count = 1; \n \n--- \n \nLet's go back to the calling function (ipc_replace_voucher_value) and keep reading:\n\n/* Call out to resource manager to get new value */\n\nnew_value_voucher = IV_NULL;\n\nkr = (ivam-&gt;ivam_get_value)(\n\nivam, key, command,\n\nprevious_vals, previous_vals_count,\n\ncontent, content_size,\n\n&amp;new_value, &amp;new_flag, &amp;new_value_voucher);\n\nif (KERN_SUCCESS != kr) {\n\nivac_release(ivac);\n\nreturn kr;\n\n} \n \n--- \n \nivam-&gt;ivam_get_value is calling the attribute type's function pointer which defines the meaning for the particular type of \"get_value\". The term get_value here is a little confusing; aren't we trying to store a new value? (and there's no subsequent call to a method like \"store_value\".) A better way to think about the semantics of get_value is that it's meant to evaluate both previous_vals (either the value from previous_voucher or the value currently in this voucher) and content (the arbitrary byte buffer from this sub-recipe) and combine/evaluate them to create a value representation. It's then up to the controller layer to store/cache that value. (Actually there's one tedious snag in this system which we'll get to involving locking...)\n\nivam_get_value for the user_data attribute type is user_data_get_value:\n\nstatic kern_return_t\n\nuser_data_get_value(\n\nipc_voucher_attr_manager_t __assert_only manager,\n\nmach_voucher_attr_key_t __assert_only key,\n\nmach_voucher_attr_recipe_command_t command,\n\nmach_voucher_attr_value_handle_array_t prev_values,\n\nmach_voucher_attr_value_handle_array_size_t prev_value_count,\n\nmach_voucher_attr_content_t content,\n\nmach_voucher_attr_content_size_t content_size,\n\nmach_voucher_attr_value_handle_t *out_value,\n\nmach_voucher_attr_value_flags_t *out_flags,\n\nipc_voucher_t *out_value_voucher)\n\n{\n\nuser_data_element_t elem;\n\nassert(&amp;user_data_manager == manager);\n\nUSER_DATA_ASSERT_KEY(key);\n\n/* never an out voucher */\n\n*out_value_voucher = IPC_VOUCHER_NULL;\n\n*out_flags = MACH_VOUCHER_ATTR_VALUE_FLAGS_NONE;\n\nswitch (command) {\n\ncase MACH_VOUCHER_ATTR_REDEEM:\n\n/* redeem of previous values is the value */\n\nif (0 &lt; prev_value_count) {\n\nelem = (user_data_element_t)prev_values[0];\n\nassert(0 &lt; elem-&gt;e_made);\n\nelem-&gt;e_made++;\n\n*out_value = prev_values[0];\n\nreturn KERN_SUCCESS;\n\n}\n\n/* redeem of default is default */\n\n*out_value = 0;\n\nreturn KERN_SUCCESS;\n\ncase MACH_VOUCHER_ATTR_USER_DATA_STORE:\n\nif (USER_DATA_MAX_DATA &lt; content_size) {\n\nreturn KERN_RESOURCE_SHORTAGE;\n\n}\n\n/* empty is the default */\n\nif (0 == content_size) {\n\n*out_value = 0;\n\nreturn KERN_SUCCESS;\n\n}\n\nelem = user_data_dedup(content, content_size);\n\n*out_value = (mach_voucher_attr_value_handle_t)elem;\n\nreturn KERN_SUCCESS;\n\ndefault:\n\n/* every other command is unknown */\n\nreturn KERN_INVALID_ARGUMENT;\n\n}\n\n} \n \n--- \n \nLet's look at the MACH_VOUCHER_ATTR_USER_DATA_STORE case, which is the command we put in our single sub-recipe. (The vulnerability is in the MACH_VOUCHER_ATTR_REDEEM code above but we need a lot more background before we get to that.) In the MACH_VOUCHER_ATTR_USER_DATA_STORE case the input arbitrary byte buffer is passed to user_data_dedup, then that return value is returned as the value of out_value. Here's user_data_dedup:\n\nstatic user_data_element_t\n\nuser_data_dedup(\n\nmach_voucher_attr_content_t content,\n\nmach_voucher_attr_content_size_t content_size)\n\n{\n\niv_index_t sum;\n\niv_index_t hash;\n\nuser_data_element_t elem;\n\nuser_data_element_t alloc = NULL;\n\nsum = user_data_checksum(content, content_size);\n\nhash = USER_DATA_HASH_BUCKET(sum);\n\nretry:\n\nuser_data_lock();\n\nqueue_iterate(&amp;user_data_bucket[hash], elem, user_data_element_t, e_hash_link) {\n\nassert(elem-&gt;e_hash == hash);\n\n/* if sums match... */\n\nif (elem-&gt;e_sum == sum &amp;&amp; elem-&gt;e_size == content_size) {\n\niv_index_t i;\n\n/* and all data matches */\n\nfor (i = 0; i &lt; content_size; i++) {\n\nif (elem-&gt;e_data[i] != content[i]) {\n\nbreak;\n\n}\n\n}\n\nif (i &lt; content_size) {\n\ncontinue;\n\n}\n\n/* ... we found a match... */\n\nelem-&gt;e_made++;\n\nuser_data_unlock();\n\nif (NULL != alloc) {\n\nkfree(alloc, sizeof(*alloc) + content_size);\n\n}\n\nreturn elem;\n\n}\n\n}\n\nif (NULL == alloc) {\n\nuser_data_unlock();\n\nalloc = (user_data_element_t)kalloc(sizeof(*alloc) + content_size);\n\nalloc-&gt;e_made = 1;\n\nalloc-&gt;e_size = content_size;\n\nalloc-&gt;e_sum = sum;\n\nalloc-&gt;e_hash = hash;\n\nmemcpy(alloc-&gt;e_data, content, content_size);\n\ngoto retry;\n\n}\n\nqueue_enter(&amp;user_data_bucket[hash], alloc, user_data_element_t, e_hash_link);\n\nuser_data_unlock();\n\nreturn alloc;\n\n} \n \n--- \n \nThe user_data attributes are just uniquified buffer pointers. Each buffer is represented by a user_data_value_element structure, which has a meta-data header followed by a variable-sized inline buffer containing the arbitrary byte data:\n\nstruct user_data_value_element {\n\nmach_voucher_attr_value_reference_t e_made;\n\nmach_voucher_attr_content_size_t e_size;\n\niv_index_t e_sum;\n\niv_index_t e_hash;\n\nqueue_chain_t e_hash_link;\n\nuint8_t e_data[];\n\n}; \n \n--- \n \nPointers to those elements are stored in the user_data_bucket hash table.\n\nuser_data_dedup searches the user_data_bucket hash table to see if a matching user_data_value_element already exists. If not, it allocates one and adds it to the hash table. Note that it's not allowed to hold locks while calling kalloc() so the code first has to drop the user_data lock, allocate a user_data_value_element then take the lock again and check the hash table a second time to ensure that another thread didn't also allocate and insert a matching user_data_value_element while the lock was dropped.\n\nThe e_made field of user_data_value_element is critical to the vulnerability we're eventually going to discuss, so let's examine its use here.\n\nIf a new user_data_value_element is created its e_made field is initialized to 1. If an existing user_data_value_element is found which matches the requested content buffer the e_made field is incremented before a pointer to that user_data_value_element is returned. Redeeming a user_data_value_element (via the MACH_VOUCHER_ATTR_REDEEM command) also just increments the e_made of the element being redeemed before returning it. The type of the e_made field is mach_voucher_attr_value_reference_t so it's tempting to believe that this field is a reference count. The reality is more subtle than that though.\n\nThe first hint that e_made isn't exactly a reference count is that if you search for e_made in XNU you'll notice that it's never decremented. There are also no places where a pointer to that structure is cast to another type which treats the first dword as a reference count. e_made can only ever go up (well technically there's also nothing stopping it overflowing so it can also go down 1 in every 232 increments...)\n\nLet's go back up the stack to the caller of user_data_get_value, ipc_replace_voucher_value:\n\nThe next part is again code for unused functionality. No current voucher attr type implementations return a new_value_voucher so this condition is ne