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About the security content of OS X El Capitan v10.11.6 and Security Update 2016-004

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# About the security content of OS X El Capitan v10.11.6 and Security Update 2016-004 This document describes the security content of OS X El Capitan v10.11.6 and Security Update 2016-004. ## About Apple security updates For 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. For more information about security, see the [Apple Product Security](<https://www.apple.com/support/security/>) page. You can encrypt communications with Apple using the [Apple Product Security PGP Key](<https://support.apple.com/kb/HT201601>). Apple security documents reference vulnerabilities by [CVE-ID](<http://cve.mitre.org/about/>) when possible. ![](/library/content/dam/edam/applecare/images/en_US/mac_apps/itunes/divider.png) ## OS X El Capitan v10.11.6 and Security Update 2016-004 Released July 18, 2016 **apache_mod_php** Available for: OS X Yosemite v10.10.5 and OS X El Capitan v10.11 and later Impact: A remote attacker may be able to execute arbitrary code Description: Multiple issues existed in PHP versions prior to 5.5.36. These were addressed by updating PHP to version 5.5.36. CVE-2016-5093 CVE-2016-5094 CVE-2016-5096 CVE-2013-7456 **Audio** Available for: OS X El Capitan v10.11 and later Impact: A local user may be able to cause a system denial of service Description: A null pointer dereference was addressed through improved input validation. CVE-2016-4649 : Juwei Lin(@fuzzerDOTcn) of Trend Micro **Audio** Available for: OS X El Capitan v10.11 and later Impact: A local user may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed through improved memory handling. CVE-2016-4647 : Juwei Lin(@fuzzerDOTcn) of Trend Micro **Audio** Available for: OS X El Capitan v10.11 and later Impact: A local user may be able to determine kernel memory layout Description: An out-of-bounds read was addressed through improved input validation. CVE-2016-4648 : Juwei Lin(@fuzzerDOTcn) of Trend Micro; Jack Tang and Moony Li of Trend Micro working with Trend Micro's Zero Day Initiative **Audio** Available for: OS X El Capitan v10.11 and later Impact: Parsing a maliciously crafted audio file may lead to the disclosure of user information Description: An out-of-bounds read was addressed through improved bounds checking. CVE-2016-4646 : Steven Seeley of Source Incite working with Trend Micro's Zero Day Initiative **bsdiff** Available for: OS X El Capitan v10.11 and later Impact: A local attacker may be able to cause unexpected application termination or arbitrary code execution Description: An integer overflow existed in bspatch. This issue was addressed through improved bounds checking. CVE-2014-9862 : an anonymous researcher **CFNetwork** Available for: OS X El Capitan v10.11 and later Impact: A local user may be able to view sensitive user information Description: A permissions issue existed in the handling of web browser cookies. This issue was addressed through improved restrictions. CVE-2016-4645 : Abhinav Bansal of Zscaler Inc. **CFNetwork Credentials** Available for: OS X El Capitan v10.11 and later Impact: An attacker in a privileged network position may be able to leak sensitive user information Description: A downgrade issue existed with HTTP authentication credentials saved in Keychain. This issue was addressed by storing the authentication types with the credentials. CVE-2016-4644 : Jerry Decime coordinated via CERT **CFNetwork Proxies** Available for: OS X El Capitan v10.11 and later Impact: An attacker in a privileged network position may be able to leak sensitive user information Description: A validation issue existed in the parsing of 407 responses. This issue was addressed through improved response validation. CVE-2016-4643 : Xiaofeng Zheng of Blue Lotus Team, Tsinghua University; Jerry Decime coordinated via CERT **CFNetwork Proxies** Available for: OS X El Capitan v10.11 and later Impact: An application may unknowingly send a password unencrypted over the network Description: Proxy authentication incorrectly reported HTTP proxies received credentials securely. This issue was addressed through improved warnings. CVE-2016-4642 : Jerry Decime coordinated via CERT **CoreGraphics** Available for: OS X El Capitan v10.11 and later Impact: A local user may be able to elevate privileges Description: An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed through improved input validation. CVE-2016-4652 : Yubin Fu of Tencent KeenLab working with Trend Micro's Zero Day Initiative **CoreGraphics** Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later Impact: A remote attacker may be able to execute arbitrary code Description: A memory corruption issue was addressed through improved memory handling. CVE-2016-4637 : Tyler Bohan of Cisco Talos (talosintel.com/vulnerability-reports) **FaceTime** Available for: OS X El Capitan v10.11 and later Impact: An attacker in a privileged network position may be able to cause a relayed call to continue transmitting audio while appearing as if the call terminated Description: User interface inconsistencies existed in the handling of relayed calls. These issues were addressed through improved FaceTime display logic. CVE-2016-4635 : Martin Vigo **Graphics Drivers** Available for: OS X El Capitan v10.11 and later Impact: A local user may be able to execute arbitrary code with kernel privileges Description: A memory corruption issue was addressed through improved input validation. CVE-2016-4634 : Stefan Esser of SektionEins **ImageIO** Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later Impact: A remote attacker may be able to execute arbitrary code Description: Multiple memory corruption issues were addressed through improved memory handling. CVE-2016-4629 : Tyler Bohan of Cisco Talos (talosintel.com/vulnerability-reports) CVE-2016-4630 : Tyler Bohan of Cisco Talos (talosintel.com/vulnerability-reports) **ImageIO** Available for: OS X El Capitan v10.11 and later Impact: A remote attacker may be able to cause a denial of service Description: A memory consumption issue was addressed through improved memory handling. CVE-2016-4632 : Evgeny Sidorov of Yandex **ImageIO** Available for: OS X El Capitan v10.11 and later Impact: A remote attacker may be able to execute arbitrary code Description: Multiple memory corruption issues were addressed through improved memory handling. CVE-2016-4631 : Tyler Bohan of Cisco Talos (talosintel.com/vulnerability-reports) **ImageIO** Available for: OS X El Capitan v10.11 and later Impact: Processing a maliciously crafted image may lead to arbitrary code execution Description: A memory corruption issue was addressed through improved memory handling. CVE-2016-7705 : Craig Young of Tripwire VERT Entry added November 30, 2017 **Intel Graphics Driver** Available for: OS X El Capitan v10.11 and later Impact: A malicious application may be able to execute arbitrary code with kernel privileges Description: Multiple memory corruption issues were addressed through improved memory handling. CVE-2016-4633 : Marco Grassi (@marcograss) of KeenLab (@keen_lab), Tencent **IOHIDFamily** Available for: OS X El Capitan v10.11 and later Impact: A local user may be able to execute arbitrary code with kernel privileges Description: A null pointer dereference was addressed through improved input validation. CVE-2016-4626 : Stefan Esser of SektionEins **IOSurface** Available for: OS X El Capitan v10.11 and later Impact: A local user may be able to execute arbitrary code with kernel privileges Description: A use-after-free was addressed through improved memory management. CVE-2016-4625 : Ian Beer of Google Project Zero **Kernel** Available for: OS X El Capitan v10.11 and later Impact: A local user may be able to execute arbitrary code with kernel privileges Description: Multiple memory corruption issues were addressed through improved memory handling. CVE-2016-1863 : Ian Beer of Google Project Zero CVE-2016-4653 : Ju Zhu of Trend Micro CVE-2016-4582 : Shrek_wzw and Proteas of Qihoo 360 Nirvan Team **Kernel** Available for: OS X El Capitan v10.11 and later Impact: A local user may be able to cause a system denial of service Description: A null pointer dereference was addressed through improved input validation. CVE-2016-1865 : Marco Grassi (@marcograss) of KeenLab (@keen_lab), Tencent, CESG **Libc** Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later Impact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution Description: A buffer overflow existed within the "link_ntoa()" function in linkaddr.c. This issue was addressed through additional bounds checking. CVE-2016-6559 : Apple Entry added January 10, 2017 **libc++abi** Available for: OS X El Capitan v10.11 and later Impact: An application may be able to execute arbitrary code with root privileges Description: Multiple memory corruption issues were addressed through improved memory handling. CVE-2016-4621 : an anonymous researcher **libexpat** Available for: OS X El Capitan v10.11 and later Impact: Processing maliciously crafted XML may lead to unexpected application termination or arbitrary code execution Description: Multiple memory corruption issues were addressed through improved memory handling. CVE-2016-0718 : Gustavo Grieco **LibreSSL** Available for: OS X El Capitan v10.11 and later Impact: A remote attacker may be able to execute arbitrary code Description: Multiple issues existed in LibreSSL before 2.2.7. These were addressed by updating LibreSSL to version 2.2.7. CVE-2016-2108 : Huzaifa Sidhpurwala (Red Hat), Hanno Böck, David Benjamin (Google), Mark Brand and Ian Beer of Google Project Zero CVE-2016-2109 : Brian Carpenter **libxml2** Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later Impact: Multiple vulnerabilities in libxml2 Description: Multiple memory corruption issues were addressed through improved memory handling. CVE-2015-8317 : Hanno Boeck CVE-2016-1836 : Wei Lei and Liu Yang of Nanyang Technological University CVE-2016-4447 : Wei Lei and Liu Yang of Nanyang Technological University CVE-2016-4448 : Apple CVE-2016-4483 : Gustavo Grieco CVE-2016-4614 : Nick Wellnhofer CVE-2016-4615 : Nick Wellnhofer CVE-2016-4616 : Michael Paddon Entry updated June 5, 2017 **libxml2** Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later Impact: Parsing a maliciously crafted XML document may lead to disclosure of user information Description: An access issue existed in the parsing of maliciously crafted XML files. This issue was addressed through improved input validation. CVE-2016-4449 : Kostya Serebryany **libxslt** Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11 and later Impact: Multiple vulnerabilities in libxslt Description: Multiple memory corruption issues were addressed through improved memory handling. CVE-2016-1683 : Nicolas Grégoire CVE-2016-1684 : Nicolas Grégoire CVE-2016-4607 : Nick Wellnhofer CVE-2016-4608 : Nicolas Grégoire CVE-2016-4609 : Nick Wellnhofer CVE-2016-4610 : Nick Wellnhofer Entry updated April 11, 2017 **Login Window** Available for: OS X El Capitan v10.11 and later Impact: A malicious application may be able to gain root privileges Description: A type confusion issue was addressed through improved memory handling. CVE-2016-4638 : Yubin Fu of Tencent KeenLab working with TrendMicro's Zero Day Initiative **Login Window** Available for: OS X El Capitan v10.11 and later Impact: A malicious application may be able to execute arbitrary code leading to compromise of user information Description: A memory corruption issue was addressed through improved input validation. CVE-2016-4640 : an anonymous researcher working with Trend Micro’s Zero Day Initiative Entry updated November 16, 2016 **Login Window** Available for: OS X El Capitan v10.11 and later Impact: A malicious application may be able to execute arbitrary code leading to the compromise of user information Description: A type confusion issue was addressed through improved memory handling. CVE-2016-4641 : Yubin Fu of Tencent KeenLab working with Trend Micro's Zero Day Initiative **Login Window** Available for: OS X El Capitan v10.11 and later Impact: A local user may be able to cause a denial of service Description: A memory initialization issue was addressed through improved memory handling. CVE-2016-4639 : Yubin Fu of Tencent KeenLab working with Trend Micro's Zero Day Initiative **OpenSSL** Available for: OS X El Capitan v10.11 and later Impact: A remote attacker may be able to execute arbitrary code Description: Multiple issues existed in OpenSSL. These issues were resolved by backporting the fixes from OpenSSL 1.0.2h/1.0.1 to OpenSSL 0.9.8. CVE-2016-2105 : Guido Vranken CVE-2016-2106 : Guido Vranken CVE-2016-2107 : Juraj Somorovsky CVE-2016-2108 : Huzaifa Sidhpurwala (Red Hat), Hanno Böck, David Benjamin (Google), Mark Brand and Ian Beer of Google Project Zero CVE-2016-2109 : Brian Carpenter CVE-2016-2176 : Guido Vranken **QuickTime** Available for: OS X El Capitan v10.11 and later Impact: Processing a maliciously crafted SGI file may lead to arbitrary code execution Description: A memory corruption issue was addressed through improved input validation. CVE-2016-4601 : Ke Liu of Tencent's Xuanwu Lab **QuickTime** Available for: OS X El Capitan v10.11 and later Impact: Processing a maliciously crafted Photoshop document may lead to unexpected application termination or arbitrary code execution Description: A memory corruption issue was addressed through improved input validation. CVE-2016-4599 : Ke Liu of Tencent's Xuanwu Lab **QuickTime** Available for: OS X El Capitan v10.11 and later Impact: Processing a maliciously crafted FlashPix Bitmap Image may lead to unexpected application termination or arbitrary code execution Description: Multiple memory corruption issues were addressed through improved memory handling. CVE-2016-4596 : Ke Liu of Tencent's Xuanwu Lab CVE-2016-4597 : Ke Liu of Tencent's Xuanwu Lab CVE-2016-4600 : Ke Liu of Tencent's Xuanwu Lab CVE-2016-4602 : Ke Liu of Tencent's Xuanwu Lab **QuickTime** Available for: OS X El Capitan v10.11 and later Impact: Processing a maliciously crafted image may lead to arbitrary code execution Description: A memory corruption issue was addressed through improved input validation. CVE-2016-4598 : Ke Liu of Tencent's Xuanwu Lab **Safari Login AutoFill** Available for: OS X El Capitan v10.11 and later Impact: A user's password may be visible on screen Description: An issue existed in Safari's password auto-fill. This issue was addressed through improved matching of form fields. CVE-2016-4595 : Jonathan Lewis from DeARX Services (PTY) LTD **Sandbox Profiles** Available for: OS X El Capitan v10.11 and later Impact: A local application may be able to access the process list Description: An access issue existed with privileged API calls. This issue was addressed through additional restrictions. CVE-2016-4594 : Stefan Esser of SektionEins OS X El Capitan v10.11.6 includes the security content of [Safari 9.1.2](<https://support.apple.com/kb/HT206900>). Information 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. Published Date: November 30, 2017


Affected Software


CPE Name Name Version
os x mavericks v 10.9.5
os x yosemite v 10.10.5
and os x el capitan v 10.11

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