USN-5213-1: WebKitGTK vulnerabilities

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-5212-1: Apache HTTP Server vulnerabilities

It was discovered that the Apache HTTP Server incorrectly handled certain forward proxy requests. A remote attacker could use this issue to cause the server to crash, resulting in a denial of service, or possibly perform a Server Side Request Forgery attack. CVE-2021-44224 It was discovered that...

LSN-0083-1: Kernel Live Patch Security Notice

The BPF subsystem in the Linux kernel before 4.17 mishandles situations with a long jump over an instruction sequence where inner instructions require substantial expansions into multiple BPF instructions, leading to an overflow. This affects kernel/bpf/core.c and net/core/filter.c.CVE-2018-25020...

USN-5211-1: Linux kernel vulnerability

Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages...

USN-5209-1: Linux kernel vulnerabilities

Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. CVE-2021-4002 It was discovered that a race condition existed in the time...

USN-5210-1: Linux kernel vulnerabilities

Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. CVE-2021-4002 It was discovered that the Linux kernel did not properly...

USN-5208-1: Linux kernel vulnerabilities

Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. CVE-2021-4002 It was discovered that a race condition existed in the...

USN-5206-1: Linux kernel (OEM) vulnerability

Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages...

USN-5207-1: Linux kernel (OEM) vulnerabilities

Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. CVE-2021-4002 It was discovered that the eBPF implementation in the Linux...

USN-5204-1: Django vulnerabilities

Chris Bailey discovered that Django incorrectly handled evaluating submitted passwords. A remote attacker could possibly use this issue to consume resources, resulting in a denial of service. CVE-2021-45115 Dennis Brinkrolf discovered that Django incorrectly handled the dictsort template filter. ...

USN-5186-2: Firefox regressions

USN-5186-1 fixed vulnerabilities in Firefox. The update introduced several minor regressions. 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 into opening a specially crafted...

USN-5203-1: Apache Log4j 2 vulnerability

Hideki Okamoto and Guy Lederfein discovered that Apache Log4j 2 did not protect against infinite recursion in lookup evaluation. A remote attacker could possibly use this issue to cause Apache Log4j 2 to crash, leading to a denial of service. Please see the following link for more information:...

USN-5201-1: Python vulnerabilities

It was discovered that the Python urllib http client could enter into an infinite loop when incorrectly handling certain server responses 100 Continue response. Specially crafted traffic from a malicious HTTP server could cause a denial of service Dos condition for a client...

USN-5200-1: Python vulnerabilities

It was discovered that the urllib.request.AbstractBasicAuthHandler class in Python contains regex allowing for catastrophic backtracking. Specially crafted traffic from a malicious HTTP server could cause a regular expression denial of service ReDoS condition for a client. CVE-2020-8492 It was...

USN-5199-1: Python vulnerabilities

It was discovered that the urllib.request.AbstractBasicAuthHandler class in Python contains regex with a quadratic worst-case time complexity. Specially crafted traffic from a malicious HTTP server could cause a regular expression denial of service ReDoS condition for a client. CVE-2021-3733 It w...

USN-5192-2: Apache Log4j 2 vulnerability

USN-5192-1 fixed a vulnerability in Apache Log4j 2. This update provides the corresponding update for Ubuntu 16.04 ESM. Original advisory details: Chen Zhaojun discovered that Apache Log4j 2 allows remote attackers to run programs via a special crafted input. An attacker could use this...

USN-5202-1: OpenJDK vulnerabilities

Varnavas Papaioannou discovered that the FTP client implementation in OpenJDK accepted alternate server IP addresses when connecting with FTP passive mode. An attacker controlling an FTP server that an application connects to could possibly use this to expose sensitive information rudimentary por...

USN-5198-1: HTMLDOC vulnerability

It was discovered that HTMLDOC improperly handled malformed URIs from an input html file. An attacker could use this to cause a denial of service...

USN-5195-1: Mumble vulnerability

It was discovered that the Mumble client supported websites for public servers with arbitrary URL schemes. If a user were tricked into visiting a malicious website from the public server list, a remote attacker could possibly execute arbitrary code...

USN-5195-2: Mumble vulnerability

It was discovered that the Mumble client supported websites for public servers with arbitrary URL schemes. If a user were tricked into visiting a malicious website from the public server list, a remote attacker could possibly execute arbitrary code...

USN-5197-1: Apache Log4j 2 vulnerability

It was found that the fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-default configurations. An attacker could use this vulnerability to cause a denial of service. Please see the following link for more information:...

USN-5194-1: Olm vulnerability

Denis Kasak discovered that Olm was not verifying the length of input being processed by the olmpkdecrypt module, which introduced a stack-based buffer overflow vulnerability to the library. An attacker could use this to cause a denial of service application crash or possibly execute arbitrary co...

USN-5193-1: X.Org X Server vulnerabilities

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled certain inputs. An attacker could use this issue to cause the server to crash, resulting in a denial of service, or possibly execute arbitrary code and escalate privileges...

USN-5192-1: Apache Log4j 2 vulnerability

Chen Zhaojun discovered that Apache Log4j 2 allows remote attackers to run programs via a special crafted input. An attacker could use this vulnerability to cause a denial of service or possibly execute arbitrary code. Please see the following link for more information:...

USN-5191-1: Flatpak vulnerability

It was discovered that Flatpak incorrectly handled certain AFUNIX sockets. An attacker could use this to specially craft a Flatpak application that could escape sandbox confinement...

USN-5174-2: Samba regression

USN-5174-1 fixed vulnerabilities in Samba. Some of the changes introduced a regression in Kerberos authentication in certain environments. Please see the following upstream bug for more information: https://bugzilla.samba.org/showbug.cgi?id=14922 This update fixes the problem. Original advisory...

USN-5189-1: GLib vulnerability

It was discovered that GLib incorrectly handled certain environment variables. An attacker could possibly use this issue to escalate privileges...

USN-5142-3: Samba regression

USN-5142-1 fixed vulnerabilities in Samba. Some of the upstream changes introduced a regression in Kerberos authentication in certain environments. Please see the following upstream bug for more information: https://bugzilla.samba.org/showbug.cgi?id=14922 This update fixes the problem. Original...

USN-5188-1: Keepalived vulnerability

It was discovered that Keepalived incorrectly handled certain messages. An attacker could possibly use this issue to access-control bypass...

USN-5186-1: 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 spoofing attacks, bypass CSP restrictions, or execute arbitrary cod...

USN-5173-2: libmodbus vulnerabilities

USN-5173-1 fixed vulnerabilities in libmodbus. This update provides the corresponding updates for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: It was discovered that libmodbus incorrectly handled inputs. An attacker could possibly use this issue to cause a denial of service o...

USN-5172-2: uriparser vulnerability

USN-5172-1 fixed vulnerabilities in uriparser. This update provides the corresponding updates for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: It was discovered that uriparser mishandled certain input. An attacker could use this vulnerability to cause uriparser to crash or...

USN-5171-2: Long Range ZIP vulnerabilities

USN-5171-1 fixed vulnerabilities in Long Range ZIP. This update provides the corresponding updates for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: It was discovered that Long Range ZIP incorrectly handled certain specially crafted lrz files. A remote attacker could possibly...

USN-5184-1: libmysofa vulnerability

It was discovered that libmysofa mishandled certain input. An attacker could use this vulnerability to cause a denial of service crash...

USN-5183-1: BlueZ vulnerability

Julian Rauchberger discovered that BlueZ incorrectly handled memory when processing SDP attribute requests. A remote attacker could use this issue to cause BlueZ to crash, leading to a denial of service, or possibly execute arbitrary code...

USN-5168-4: NSS regression

USN-5168-3 fixed a vulnerability in NSS. Unfortunately that update introduced a regression that could break SSL connections. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Tavis Ormandy discovered that NSS incorrectly handled verifying DSA/RSA-PSS...

USN-5180-1: Mailman vulnerability

It was discovered that Mailman incorrectly handled CSRF tokens. A remote list member or moderator could possibly use their own token to craft an admin request CSRF attack and set a new admin password or make other changes...

USN-5179-1: BusyBox vulnerabilities

It was discovered that BusyBox incorrectly handled certain malformed gzip archives. If a user or automated system were tricked into processing a specially crafted gzip archive, a remote attacker could use this issue to cause BusyBox to crash, resulting in a denial of service, or possibly execute...

USN-5178-1: Django vulnerability

Sjoerd Job Postmus and TengMA discovered that Django incorrectly handled URLs with trailing newlines. A remote attacker could possibly use this issue to bypass certain access controls...

USN-5142-2: Samba regressions

USN-5142-1 fixed vulnerabilities in Samba. Some of the upstream changes introduced regressions in name mapping and backups. Please see the following upstream bugs for more information: https://bugzilla.samba.org/showbug.cgi?id=14901 https://bugzilla.samba.org/showbug.cgi?id=14918 This update fixe...

USN-5170-1: MariaDB vulnerability

A security issue was discovered in MariaDB and this update includes new upstream MariaDB versions to fix the issue. MariaDB has been updated to 10.3.32 in Ubuntu 20.04 LTS and to 10.5.13 in Ubuntu 21.04 and Ubuntu 21.10. In addition to security fixes, the updated packages contain bug fixes, new...

USN-5175-1: NTP vulnerability

It was discovered that ntpd incorrectly handled memory when CMAC keys were used. A remote attacker could possibly use this issue to cause ntpd to crash resulting in a denial of service...

USN-5174-1: Samba vulnerabilities

Stefan Metzmacher discovered that Samba incorrectly handled SMB1 client connections. A remote attacker could possibly use this issue to downgrade connections to plaintext authentication. CVE-2016-2124 Andrew Bartlett discovered that Samba incorrectly mapping domain users to local users. An...

USN-5173-1: libmodbus vulnerabilities

It was discovered that libmodbus incorrectly handled inputs. An attacker could possibly use this issue to cause a denial of service or other unspecified impact...

USN-5172-1: uriparser vulnerabilities

It was discovered that uriparser mishandled certain input. An attacker could use this vulnerability to cause uriparser to crash or possibly execute arbitrary code. CVE-2018-19198, CVE-2018-19199, CVE-2018-19200 It was discovered that uriparser incorrectly handled certain URIs. An attacker could u...

USN-5171-1: Long Range ZIP vulnerabilities

It was discovered that Long Range ZIP incorrectly handled certain specially crafted lrz files. A remote attacker could possibly use this issue to cause a denial of service crash or other unspecified impact...

USN-5168-3: NSS vulnerability

USN-5168-1 fixed a vulnerability in NSS. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: Tavis Ormandy discovered that NSS incorrectly handled verifying DSA/RSA-PSS signatures. A remote attacker could use this issue to cause NSS ...

USN-5168-1: NSS vulnerability

Tavis Ormandy discovered that NSS incorrectly handled verifying DSA/RSA-PSS signatures. A remote attacker could use this issue to cause NSS to crash, resulting in a denial of service, or possibly execute arbitrary code...

USN-5168-2: Thunderbird vulnerability

Tavis Ormandy discovered that NSS, included with Thunderbird, incorrectly handled verifying DSA/RSA-PSS signatures. A remote attacker could use this issue to cause Thunderbird to crash, resulting in a denial of service, or possibly execute arbitrary code...

USN-5165-1: Linux kernel (OEM) vulnerabilities

It was discovered that the NFC subsystem in the Linux kernel contained a use-after-free vulnerability in its NFC Controller Interface NCI implementation. A local attacker could possibly use this to cause a denial of service system crash or execute arbitrary code. CVE-2021-3760 It was discovered...