Articles by KENNETH

USN-5111-2: strongSwan vulnerability USN-5111-1 fixed a vulnerability in strongSwan. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: It was discovered that strongSwan incorrectly handled replacing certificates in the cache. A remote attacker could use this issue to cause strongSwan to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-41991) Source: USN-5111-2: strongSwan vulnerability

USN-5111-1: strongSwan vulnerabilities It was discovered that strongSwan incorrectly handled certain RSASSA-PSS signatures. A remote attacker could use this issue to cause strongSwan to crash, resulting in a denial of service. (CVE-2021-41990) It was discovered that strongSwan incorrectly handled replacing certificates in the cache. A remote attacker could use this issue to cause strongSwan to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-41991) Source: USN-5111-1: strongSwan vulnerabilities

USN-5092-3: Linux kernel (Azure) regression USN-5092-2 fixed vulnerabilities in Linux 5.11-based kernels. Unfortunately, for Linux kernels intended for use within Microsoft Azure environments, that update introduced a regression that could cause the kernel to fail to boot in large Azure instance types. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Valentina Palmiotti discovered that the io_uring subsystem in the Linux kernel could be coerced to free adjacent memory. A local attacker could use this to execute arbitrary code. (CVE-2021-41073) Ofek Kirzner, Adam Morrison, Benedict Schlueter, and Piotr Krysiuk discovered that the BPF verifier in the Linux kernel missed possible mispredicted branches due to type confusion, allowing a side-channel attack. An attacker could use this to expose sensitive information. (CVE-2021-33624) Benedict Schlueter discovered that the BPF subsystem in the Linux kernel did not properly protect against [ more… ]