USN-4759-1: GLib vulnerabilities

Krzesimir Nowak discovered that GLib incorrectly handled certain large buffers. A remote attacker could use this issue to cause applications linked to GLib to crash, resulting in a denial of service, or possibly execute arbitrary code. CVE-2021-27218 Kevin Backhouse discovered that GLib incorrect...

USN-4733-2: GNOME Autoar regression

USN-4733-1 fixed a vulnerability in GNOME Autoar. The upstream fix introduced a regression when extracting archives containing directories. This update fixes the problem. Original advisory details: Yiğit Can Yılmaz discovered that GNOME Autoar could extract files outside of the intended directory...

USN-4757-2: wpa_supplicant and hostapd vulnerability

USN-4757-1 fixed a vulnerability in wpasupplicant and hostapd. This update provides the corresponding update for Ubuntu 14.04 ESM. Original advisory details: It was discovered that wpasupplicant did not properly handle P2P Wi-Fi Direct provision discovery requests in some situations. A physically...

USN-4757-1: wpa_supplicant and hostapd vulnerability

It was discovered that wpasupplicant did not properly handle P2P Wi-Fi Direct provision discovery requests in some situations. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code...

USN-4754-4: Python 2.7 vulnerability

USN-4754-1 fixed vulnerabilities in Python. Because of a regression, a subsequent update removed the fix for CVE-2021-3177. This update reinstates the security fix for CVE-2021-3177. We apologize for the inconvenience. Original advisory details: It was discovered that Python incorrectly handled...

USN-4737-2: Bind vulnerability

USN-4737-1 fixed a vulnerability in Bind. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Original advisory details: It was discovered that Bind incorrectly handled GSSAPI security policy negotiation. A remote attacker could use this issue to cause Bind to...

USN-4756-1: Firefox vulnerabilities

Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, conduct cross-site scripting XSS attacks, bypass HTTP auth phishing warning...

USN-4754-2: Python regression

USN-4754-1 fixed a vulnerability in Python. The fix for CVE-2021-3177 introduced a regression in Python 2.7. This update reverts the security fix pending further investigation. We apologize for the inconvenience. Original advisory details: It was discovered that Python incorrectly handled certain...

USN-4755-1: LibTIFF vulnerabilities

It was discovered that LibTIFF incorrectly handled certain malformed images. If a user or automated system were tricked into opening a specially crafted image, a remote attacker could crash the application, leading to a denial of service, or possibly execute arbitrary code with user privileges...

USN-4754-1: Python vulnerabilities

It was discovered that Python incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code or cause a denial of service. CVE-2020-27619, CVE-2021-3177...

USN-4749-1: Linux kernel vulnerabilities

Bodong Zhao discovered a use-after-free in the Sun keyboard driver implementation in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. CVE-2020-25669 It was discovered that the jfs file system implementation in the Linux kernel...

USN-4753-1: Linux kernel (OEM) vulnerability

It was discovered that the LIO SCSI target implementation in the Linux kernel performed insufficient identifier checking in certain XCOPY requests. An attacker with access to at least one LUN in a multiple backstore environment could use this to expose sensitive information or modify data...

USN-4752-1: Linux kernel (OEM) vulnerabilities

Daniele Antonioli, Nils Ole Tippenhauer, and Kasper Rasmussen discovered that legacy pairing and secure-connections pairing authentication in the Bluetooth protocol could allow an unauthenticated user to complete authentication without pairing credentials via adjacent access. A physically proxima...

USN-4751-1: Linux kernel vulnerabilities

It was discovered that the console keyboard driver in the Linux kernel contained a race condition. A local attacker could use this to expose sensitive information kernel memory. CVE-2020-25656 Minh Yuan discovered that the tty driver in the Linux kernel contained race conditions when handling...

USN-4750-1: Linux kernel vulnerabilities

Bodong Zhao discovered a use-after-free in the Sun keyboard driver implementation in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. CVE-2020-25669 It was discovered that the jfs file system implementation in the Linux kernel...

USN-4748-1: Linux kernel vulnerabilities

It was discovered that the jfs file system implementation in the Linux kernel contained an out-of-bounds read vulnerability. A local attacker could use this to possibly cause a denial of service system crash. CVE-2020-27815 It was discovered that the memory management subsystem in the Linux kerne...

USN-4747-2: GNU Screen vulnerability

USN-4747-1 fixed a vulnerability in screen. This update provides the corresponding update for Ubuntu 14.04 ESM. Original advisory details: Felix Weinmann discovered that GNU Screen incorrectly handled certain character sequences. A remote attacker could use this issue to cause GNU Screen to crash...

USN-4747-1: GNU Screen vulnerability

Felix Weinmann discovered that GNU Screen incorrectly handled certain character sequences. A remote attacker could use this issue to cause GNU Screen to crash, resulting in a denial of service, or possibly execute arbitrary code...

USN-4746-1: xterm vulnerability

Tavis Ormandy discovered that xterm incorrectly handled certain character sequences. A remote attacker could use this issue to cause xterm to crash, resulting in a denial of service, or possibly execute arbitrary code...

USN-4698-2: Dnsmasq regression

USN-4698-1 fixed vulnerabilities in Dnsmasq. The updates introduced regressions in certain environments related to issues with multiple queries, and issues with retries. This update fixes the problem. Original advisory details: Moshe Kol and Shlomi Oberman discovered that Dnsmasq incorrectly...

USN-4745-1: OpenSSL vulnerabilities

David Benjamin discovered that OpenSSL incorrectly handled comparing certificates containing a EDIPartyName name type. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. CVE-2020-1971 Tavis Ormandy discovered that OpenSSL incorrectly handl...

USN-4467-3: QEMU regression

USN-4467-1 fixed vulnerabilities in QEMU. The fix for CVE-2020-13754 introduced a regression in certain environments. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Ren Ding, Hanqing Zhao, Alexander Bulekov, and Anatoly Trosinenko discovered that the...

USN-4744-1: OpenLDAP vulnerability

Pasi Saarinen discovered that OpenLDAP incorrectly handled certain short timestamps. A remote attacker could possibly use this issue to cause OpenLDAP to crash, resulting in a denial of service...

USN-4743-1: GDK-PixBuf vulnerability

It was discovered that the GDK-PixBuf library did not properly handle certain GIF images. If an user or automated system were tricked into opening a specially crafted GIF file, a remote attacker could use this flaw to cause GDK-PixBuf to crash, resulting in a denial of service...

USN-4742-1: Django vulnerability

It was discovered that Django incorrectly accepted semicolons as query parameters. A remote attacker could possibly use this issue to perform a Web Cache Poisoning attack...

USN-4741-1: Jackson vulnerabilities

It was discovered that Jackson Databind incorrectly handled deserialization. An attacker could possibly use this issue to execute arbitrary code...

USN-4740-1: Apache Shiro vulnerabilities

It was discovered that Apache Shiro mishandled specially crafted requests. An attacker could use this vulnerability to bypass authentication mechanisms...

USN-4739-1: WebKitGTK vulnerability

A large number of security issues were discovered in the WebKitGTK Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service...

USN-4738-1: OpenSSL vulnerabilities

Paul Kehrer discovered that OpenSSL incorrectly handled certain input lengths in EVP functions. A remote attacker could possibly use this issue to cause OpenSSL to crash, resulting in a denial of service. CVE-2021-23840 Tavis Ormandy discovered that OpenSSL incorrectly handled parsing issuer...

USN-4737-1: Bind vulnerability

It was discovered that Bind incorrectly handled GSSAPI security policy negotiation. A remote attacker could use this issue to cause Bind to crash, resulting in a denial of service, or possibly execute arbitrary code. In the default installation, attackers would be isolated by the Bind AppArmor...

USN-4734-2: wpa_supplicant and hostapd vulnerabilities

USN-4734-1 fixed several vulnerabilities in wpasupplicant. This update provides the corresponding update for Ubuntu 14.04 ESM. It was discovered that wpasupplicant did not properly handle P2P Wi-Fi Direct group information in some situations, leading to a heap overflow. A physically proximate...

USN-4736-1: Thunderbird vulnerabilities

Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, or execute arbitrary code. CVE-2020-26976,...

USN-4735-1: PostgreSQL vulnerability

Heikki Linnakangas discovered that PostgreSQL incorrectly leaked values of denied columns when handling certain errors. A remote attacker could possibly use this issue to obtain sensitive information...

USN-4734-1: wpa_supplicant and hostapd vulnerabilities

It was discovered that wpasupplicant did not properly handle P2P Wi-Fi Direct group information in some situations, leading to a heap overflow. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code. CVE-2021-0326 It was discovered that...

USN-4733-1: GNOME Autoar vulnerability

Yiğit Can Yılmaz discovered that GNOME Autoar could extract files outside of the intended directory. If a user were tricked into extracting a specially crafted archive, a remote attacker could create files in arbitrary locations, possibly leading to code execution...

USN-4732-1: SQLite vulnerability

It was discovered that SQLite incorrectly handled certain sub-queries. An attacker could use this issue to cause SQLite to crash, resulting in a denial of service, or possibly execute arbitrary code...

USN-4730-1: PostSRSd vulnerability

It was discovered that PostSRSd mishandled certain input. A remote attacker could use this vulnerability to cause a denial of service via a long timestamp tag in an SRS address...

USN-4731-1: JUnit 4 vulnerability

It was discovered that JUnit 4 contains a local information disclosure vulnerability. An attacker could possibly use this issue to obtain sensitive information...

USN-4729-1: Open vSwitch vulnerability

Joakim Hindersson discovered that Open vSwitch incorrectly parsed certain network packets. A remote attacker could use this issue to cause a denial of service, or possibly alter packet classification...

USN-4713-2: Linux kernel vulnerability

It was discovered that the LIO SCSI target implementation in the Linux kernel performed insufficient identifier checking in certain XCOPY requests. An attacker with access to at least one LUN in a multiple backstore environment could use this to expose sensitive information or modify data...

USN-4728-1: snapd vulnerability

Gilad Reti and Nimrod Stoler discovered that snapd did not correctly specify cgroup delegation when generating systemd service units for various container management snaps. This could allow a local attacker to escalate privileges via access to arbitrary devices of the container host from within a...

USN-4727-1: Linux kernel vulnerability

Alexander Popov discovered that multiple race conditions existed in the AFVSOCK implementation in the Linux kernel. A local attacker could use this to cause a denial of service system crash or execute arbitrary code...

USN-4726-1: OpenJDK vulnerability

It was discovered that OpenJDK incorrectly handled the direct buffering of characters. An attacker could use this issue to cause OpenJDK to crash, resulting in a denial of service, or cause other unspecified impact...

USN-4717-2: Firefox regression

USN-4717-1 fixed vulnerabilities in Firefox. The update caused a startup hang in some circumstances. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially...

USN-4725-1: QEMU vulnerabilities

It was discovered that QEMU incorrectly handled memory in iSCSI emulation. An attacker inside the guest could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. CVE-2020-11947 Alexander Bulekov discovered tha...

USN-4724-1: OpenLDAP vulnerabilities

It was discovered that OpenLDAP incorrectly handled Certificate Exact Assertion processing. A remote attacker could possibly use this issue to cause OpenLDAP to crash, resulting in a denial of service. CVE-2020-36221 It was discovered that OpenLDAP incorrectly handled saslAuthzTo processing. A...

USN-4723-1: PEAR vulnerability

It was discovered that PEAR incorrectly handled symbolic links in archives. A remote attacker could possibly use this issue to execute arbitrary code...

USN-4711-1: Linux kernel vulnerabilities

It was discovered that the LIO SCSI target implementation in the Linux kernel performed insufficient identifier checking in certain XCOPY requests. An attacker with access to at least one LUN in a multiple backstore environment could use this to expose sensitive information or modify data...

USN-4722-1: ReadyMedia (MiniDLNA) vulnerabilities

It was discovered that ReadyMedia MiniDLNA allowed subscription requests with a delivery URL on a different network segment than the fully qualified event- subscription URL. An attacker could use this to hijack smart devices and cause denial of service attacks. CVE-2020-12695 It was discovered th...

USN-4721-1: Flatpak vulnerability

Simon McVittie discovered that flatpak-portal service allowed sandboxed applications to execute arbitrary code on the host system a sandbox escape. A malicious user could create a Flatpak application that set environment variables, trusted by the Flatpak "run" command, and use it to execute...