#ubuntu

Ubuntu Security Notice 5773-1 - It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service or possibly execute arbitrary code. Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading to potential data structure reuse. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

Ubuntu Security Notice 5754-2 - It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a memory leak existed in the IPv6 implementation of the Linux kernel. A local attacker could use this to cause a denial of service.

Ubuntu Security Notice 5756-3 - Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading to potential data structure reuse. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a memory leak existed in the IPv6 implementation of the Linux kernel. A local attacker could use this to cause a denial of service.

Ubuntu Security Notice 5772-1 - It was discovered that QEMU incorrectly handled bulk transfers from SPICE clients. A remote attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. It was discovered that QEMU did not properly manage memory when it transfers the USB packets. A malicious guest attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.

Ubuntu Security Notice 5767-2 - USN-5767-1 fixed a vulnerability in Python. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. It was discovered that Python incorrectly handled certain IDNA inputs. An attacker could possibly use this issue to expose sensitive information denial of service, or cause a crash.

Ubuntu Security Notice 5771-1 - USN-3557-1 fixed vulnerabilities in Squid. This update introduced a regression which could cause the cache log to be filled with many Vary loop messages. This update fixes the problem. Mathias Fischer discovered that Squid incorrectly handled certain long strings in headers. A malicious remote server could possibly cause Squid to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 16.04 LTS.

Qualys discovered a race condition (CVE-2022-3328) in snap-confine, a SUID-root program installed by default on Ubuntu. In this advisory,they tell the story of this vulnerability (which was introduced in February 2022 by the patch for CVE-2021-44731) and detail how they exploited it in Ubuntu Server (a local privilege escalation, from any user to root) by combining it with two vulnerabilities in multipathd (an authorization bypass and a symlink attack, CVE-2022-41974 and CVE-2022-41973).

DHIS 2 is an open source information system for data capture, management, validation, analytics and visualization. In affected versions an authenticated DHIS2 user can craft a request to DHIS2 to instruct the server to make requests to external resources (like third party servers). This could allow an attacker, for example, to identify vulnerable services which might not be otherwise exposed to the public internet or to determine whether a specific file is present on the DHIS2 server. DHIS2 administrators should upgrade to the following hotfix releases: 2.36.12.1, 2.37.8.1, 2.38.2.1, 2.39.0.1. At this time, there is no known workaround or mitigation for this vulnerability.

Ubuntu Security Notice 5770-1 - Todd Eisenberger discovered that certain versions of GNU Compiler Collection could be made to clobber the status flag of RDRAND and RDSEED with specially crafted input. This could potentially lead to less randomness in random number generation.

Ubuntu Security Notice 5769-1 - It was discovered that protobuf did not properly manage memory when serializing large messages. An attacker could possibly use this issue to cause applications using protobuf to crash, resulting in a denial of service, or possibly execute arbitrary code. It was discovered that protobuf did not properly manage memory when parsing specifically crafted messages. An attacker could possibly use this issue to cause applications using protobuf to crash, resulting in a denial of service.