Ubuntu security

USN-5630-1: Linux kernel (Raspberry Pi) vulnerabilities It was discovered that the framebuffer driver on the Linux kernel did not verify size limits when changing font or screen size, leading to an out-of- bounds write. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33655) Moshe Kol, Amit Klein and Yossi Gilad discovered that the IP implementation in the Linux kernel did not provide sufficient randomization when calculating port offsets. An attacker could possibly use this to expose sensitive information. (CVE-2022-1012, CVE-2022-32296) Norbert Slusarek discovered that a race condition existed in the perf subsystem in the Linux kernel, resulting in a use-after-free vulnerability. A privileged local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-1729) It was discovered that the device-mapper verity [ more… ]

USN-5628-1: etcd vulnerabilities It was discovered that etcd incorrectly handled certain specially crafted WAL files. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-15106, CVE-2020-15112) It was discovered that etcd incorrectly handled directory permissions when trying to create a directory that exists already. An attacker could possibly use this issue to obtain sensitive information. (CVE-2020-15113) It was discovered that etcd incorrectly handled endpoint setup. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-15114) Source: USN-5628-1: etcd vulnerabilities

USN-5627-1: PCRE vulnerabilities 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 expose sensitive information. Source: USN-5627-1: PCRE vulnerabilities

USN-5626-2: Bind vulnerabilities USN-5626-1 fixed several vulnerabilities in Bind. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: Yehuda Afek, Anat Bremler-Barr, and Shani Stajnrod discovered that Bind incorrectly handled large delegations. A remote attacker could possibly use this issue to reduce performance, leading to a denial of service. (CVE-2022-2795) It was discovered that Bind incorrectly handled memory when processing ECDSA DNSSEC verification. A remote attacker could use this issue to consume resources, leading to a denial of service. (CVE-2022-38177) Source: USN-5626-2: Bind vulnerabilities

USN-5626-1: Bind vulnerabilities Yehuda Afek, Anat Bremler-Barr, and Shani Stajnrod discovered that Bind incorrectly handled large delegations. A remote attacker could possibly use this issue to reduce performance, leading to a denial of service. (CVE-2022-2795) It was discovered that Bind incorrectly handled statistics requests. A remote attacker could possibly use this issue to obtain sensitive memory contents, or cause a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-2881) It was discovered that Bind incorrectly handled memory when processing certain Diffie-Hellman key exchanges. A remote attacker could use this issue to consume resources, leading to a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-2906) Maksym Odinintsev discovered that Bind incorrectly handled answers from cache when configured with a zero stale-answer-timeout. A remote attacker could possibly use this issue to cause Bind to crash, resulting in [ more… ]