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ALSA-2023:5453 — Important: glibc security update

Affected: AlmaLinux:9: glibc, AlmaLinux:9: glibc-all-langpacks, AlmaLinux:9: glibc-benchtests, AlmaLinux:9: glibc-common, AlmaLinux:9: glibc-devel, AlmaLinux:9: glibc-doc, AlmaLinux:9: glibc-gconv-extra, AlmaLinux:9: glibc-headers, AlmaLinux:9: glibc-langpack-aa, AlmaLinux:9: glibc-langpack-af and 205 more

The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly.

Security Fix(es):

* glibc: buffer overflow in ld.so leading to privilege escalation (CVE-2023-4911) * glibc: Stack read overflow in getaddrinfo in no-aaaa mode (CVE-2023-4527) * glibc: potential use-after-free in getaddrinfo() (CVE-2023-4806) * glibc: potential use-after-free in gaih_inet() (CVE-2023-4813)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

bdu:2023-05969

Withdrawn: BELL-CVE-2023-4813 — CVE-2023-4813 does not affect BellSoft software

Withdrawn by the publisher.

certfr-2023-avi-0957 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de RedHat. Certaines d'…

certfr-2023-avi-0957

EUVD-2026-260527

fkie_cve-2023-4813

A flaw has been identified in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.

GHSA-qx6j-g797-jg9r

A flaw was found in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.

gsd-2023-4813

ICSA-23-348-10 — Siemens SIMATIC S7-1500

expat 2.1.0 and earlier does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE. shadow: TOCTOU (time-of-check time-of-use) race condition when copying and removing directory trees run-mailcap in the Debian mime-support package before 3.52-1+deb7u1 allows context-dependent attackers to execute arbitrary commands via shell metacharacters in a filename. In Python (aka CPython) up to 3.10.8, the mailcap module does not add escape characters into commands discovered in the system mailcap file. This may allow attackers to inject shell commands into applications that call mailcap.findmatch with untrusted input (if they lack validation of user-provided filenames or arguments). The fix is also back-ported to 3.7, 3.8, 3.9 Use-after-free vulnerability in bzip2recover in bzip2 1.0.6 allows remote attackers to cause a denial of service (crash) via a crafted bzip2 file, related to block ends set to before the start o…

msrc_CVE-2023-4813 — Glibc: potential use-after-free in gaih_inet()

msrc_CVE-2023-4813

OESA-2023-1688 — glibc security update

Affected: openEuler:20.03-LTS-SP1: glibc, openEuler:20.03-LTS-SP3: glibc, openEuler:22.03-LTS: glibc, openEuler:22.03-LTS-SP1: glibc, openEuler:22.03-LTS-SP2: glibc

The GNU C Library project provides the core libraries for the GNU system and GNU/Linux systems, as well as many other systems that use Linux as the kernel. These libraries provide critical APIs including ISO C11, POSIX.1-2008, BSD, OS-specific APIs and more. These APIs include such foundational facilities as open, read, write, malloc, printf, getaddrinfo, dlopen, pthread_create, crypt, login, exit and more. Security Fix(es): A flaw was found in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and AI_V4MAPPED as flags.(CVE-2023-4806) A flaw was found in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/nsswitch.conf is configured with SUCCESS=continue or SUCCESS=merge.(CVE-2023-4813) A flaw was found in the GNU C Library. A recent fix for CVE-2023-4806 introduced the potential for a memory leak, which may result in an application crash.(CVE-2023-5156)

openSUSE-SU-2024:13388-1 — glibc-2.38-6.1 on GA media

glibc-2.38-6.1 on GA media

RHSA-2023:7409 — Red Hat Security Advisory: glibc security update

glibc: potential use-after-free in getaddrinfo() glibc: potential use-after-free in gaih_inet()

SUSE-RU-2023:4063-1 — Recommended update for glibc

Recommended update for glibc

UBUNTU-CVE-2023-4813

Affected: Ubuntu:Pro:14.04:LTS: eglibc, Ubuntu:Pro:16.04:LTS: glibc, Ubuntu:Pro:18.04:LTS: glibc, Ubuntu:20.04:LTS: glibc, Ubuntu:22.04:LTS: glibc

WID-SEC-W-2023-2314 — GNU libc: Schwachstelle ermöglicht Denial of Service

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in GNU libc ausnutzen, um einen Denial of Service Angriff durchzuführen.