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CVE-2023-4527

Status Candidate

Overview

A flaw was found in glibc. When the getaddrinfo function is called with the AF_UNSPEC address family and the system is configured with no-aaaa mode via /etc/resolv.conf, a DNS response via TCP larger than 2048 bytes can potentially disclose stack contents through the function returned address data, and may cause a crash.

Related Files

Red Hat Security Advisory 2023-5455-01
Posted Oct 6, 2023
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2023-5455-01 - The glibc packages provide the standard C libraries, POSIX thread libraries, standard math libraries, and the name service cache daemon used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. Issues addressed include buffer overflow, privilege escalation, and use-after-free vulnerabilities.

tags | advisory, overflow, vulnerability
systems | linux, redhat, osx
advisories | CVE-2023-4527, CVE-2023-4806, CVE-2023-4813, CVE-2023-4911
SHA-256 | c539e392dc47fc652213fbb778378e740f14ab77e224cc908245d886a1ba267b
Red Hat Security Advisory 2023-5453-01
Posted Oct 6, 2023
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2023-5453-01 - The glibc packages provide the standard C libraries, POSIX thread libraries, standard math libraries, and the name service cache daemon used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. Issues addressed include buffer overflow, privilege escalation, and use-after-free vulnerabilities.

tags | advisory, overflow, vulnerability
systems | linux, redhat, osx
advisories | CVE-2023-4527, CVE-2023-4806, CVE-2023-4813, CVE-2023-4911
SHA-256 | c88515dc1b69c0282a2afe7e6d0ea45ea6534432b06726593717f6d8662d76b1
Gentoo Linux Security Advisory 202310-03
Posted Oct 4, 2023
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202310-3 - Multiple vulnerabilities in glibc could result in Local Privilege Escalation. Versions greater than or equal to 2.37-r7 are affected.

tags | advisory, local, vulnerability
systems | linux, gentoo
advisories | CVE-2022-39046, CVE-2023-4527, CVE-2023-4806, CVE-2023-4911
SHA-256 | e2500310834567c2cb1e8cade2790f16602f9ae46924039eae6d388ddac98d3b
Ubuntu Security Notice USN-6409-1
Posted Oct 4, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6409-1 - It was discovered that the GNU C Library incorrectly handled the GLIBC_TUNABLES environment variable. An attacker could possibly use this issue to perform a privilege escalation attack. It was discovered that the GNU C Library incorrectly handled certain DNS responses when the system was configured in no-aaaa mode. A remote attacker could possibly use this issue to cause the GNU C Library to crash, resulting in a denial of service. This issue only affected Ubuntu 23.04.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2023-4527, CVE-2023-4911
SHA-256 | f7cfa8e1c5b1ae4735706243eda7383b0f18aafc0e50647d07deb086c6db7da1
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