SECURITY

USN-5042-1: HAProxy vulnerabilities It was discovered that HAProxy incorrectly handled the HTTP/2 protocol. A remote attacker could possibly use this issue to bypass restrictions. Source: USN-5042-1: HAProxy vulnerabilities

LSN-0080-1: Kernel Live Patch Security Notice Andy Nguyen discovered that the netfilter subsystem in the Linux kernel contained an out-of-bounds write in its setsockopt() implementation. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.(CVE-2021-22555) Source: LSN-0080-1: Kernel Live Patch Security Notice

USN-5022-2: MariaDB vulnerabilities USN-5022-1 fixed multiple vulnerabilities in MySQL. This update provides the corresponding fixes for CVE-2021-2372 and CVE-2021-2389 in MariaDB 10.3 and 10.5. In addition to security fixes, the updated package contain bug fixes, new features, and possibly incompatible changes. Please see the following for more information: https://mariadb.com/kb/en/mariadb-10331-changelog/ https://mariadb.com/kb/en/mariadb-10512-changelog/ Original advisory details: Multiple security issues were discovered in MySQL and this update includes new upstream MySQL versions to fix these issues. MySQL has been updated to 8.0.26 in Ubuntu 20.04 LTS and Ubuntu 21.04. Ubuntu 18.04 LTS has been updated to MySQL 5.7.35. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes. Please see the following for more information: https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-35.html https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-26.html https://www.oracle.com/security-alerts/cpujul2021.html Source: USN-5022-2: MariaDB vulnerabilities

USN-5039-1: Linux kernel vulnerability Andy Nguyen discovered that the netfilter subsystem in the Linux kernel contained an out-of-bounds write in its setsockopt() implementation. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. Source: USN-5039-1: Linux kernel vulnerability

USN-5038-1: PostgreSQL vulnerabilities It was discovered that the PostgresQL planner could create incorrect plans in certain circumstances. A remote attacker could use this issue to cause PostgreSQL to crash, resulting in a denial of service, or possibly obtain sensitive information from memory. This issue only affected Ubuntu 20.04 LTS and Ubuntu 21.04. (CVE-2021-3677) It was discovered that PostgreSQL incorrectly handled certain SSL renegotiation ClientHello messages from clients. A remote attacker could possibly use this issue to cause PostgreSQL to crash, resulting in a denial of service. (CVE-2021-3449) Source: USN-5038-1: PostgreSQL vulnerabilities