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USN-6001-1: Linux kernel (AWS) vulnerabilities Xuewei Feng, Chuanpu Fu, Qi Li, Kun Sun, and Ke Xu discovered that the TCP implementation in the Linux kernel did not properly handle IPID assignment. A remote attacker could use this to cause a denial of service (connection termination) or inject forged data. (CVE-2020-36516) Ke Sun, Alyssa Milburn, Henrique Kawakami, Emma Benoit, Igor Chervatyuk, Lisa Aichele, and Thais Moreira Hamasaki discovered that the Spectre Variant 2 mitigations for AMD processors on Linux were insufficient in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-26401) Jürgen Groß discovered that the Xen subsystem within the Linux kernel did not adequately limit the number of events driver domains (unprivileged PV backends) could send to other guest VMs. An attacker in a driver domain could use this to cause a denial of service [ more… ]

USN-6000-1: Linux kernel (BlueField) vulnerabilities It was discovered that the Upper Level Protocol (ULP) subsystem in the Linux kernel did not properly handle sockets entering the LISTEN state in certain protocols, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-0461) It was discovered that the NVMe driver in the Linux kernel did not properly handle reset events in some situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2022-3169) It was discovered that a use-after-free vulnerability existed in the SGI GRU driver in the Linux kernel. A local attacker could possibly use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-3424) Gwangun Jung discovered a race condition in the IPv4 implementation in [ more… ]

USN-5998-1: Apache Log4j vulnerabilities It was discovered that the SocketServer component of Apache Log4j 1.2 incorrectly handled deserialization. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 16.04 ESM. (CVE-2019-17571) It was discovered that the JMSSink component of Apache Log4j 1.2 incorrectly handled deserialization. An attacker could possibly use this issue to execute arbitrary code. (CVE-2022-23302) It was discovered that Apache Log4j 1.2 incorrectly handled certain SQL statements. A remote attacker could possibly use this issue to perform an SQL injection attack and alter the database. This issue was only fixed in Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2022-23305) It was discovered that the Chainsaw component of Apache Log4j 1.2 incorrectly handled deserialization. An attacker could possibly use this issue to execute arbitrary code. This issue was only fixed in Ubuntu 18.04 [ more… ]