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ALSA-2021:4358 — Moderate: glibc security, bug fix, and enhancement update

Affected: AlmaLinux:8: compat-libpthread-nonshared, AlmaLinux:8: glibc-benchtests, AlmaLinux:8: glibc-nss-devel, AlmaLinux:8: glibc-static, AlmaLinux:8: glibc-utils, AlmaLinux:8: nss_hesiod

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: Arbitrary read in wordexp() (CVE-2021-35942)

* glibc: Use-after-free in addgetnetgrentX function in netgroupcache.c (CVE-2021-27645)

* glibc: mq_notify does not handle separately allocated thread attributes (CVE-2021-33574)

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.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

bdu:2021-03561

Withdrawn: BELL-CVE-2021-35942 — CVE-2021-35942 does not affect BellSoft software

Withdrawn by the publisher.

certfr-2023-avi-0453 — De multiples vulnérabilités ont été découvertes dans les produits Siemens. Certaines d'entre elles permettent à un atta…

certfr-2023-avi-0453

EUVD-2026-268620

fkie_cve-2021-35942

The wordexp function in the GNU C Library (aka glibc) through 2.33 may crash or read arbitrary memory in parse_param (in posix/wordexp.c) when called with an untrusted, crafted pattern, potentially resulting in a denial of service or disclosure of information. This occurs because atoi was used but strtoul should have been used to ensure correct calculations.

GHSA-53wq-r63f-m33q

gsd-2021-35942

ICSA-23-166-10 — Siemens SIMATIC S7-1500 TM MFP BIOS

The iconv program in the GNU C Library (aka glibc or libc6) 2.31 and earlier, when invoked with multiple suffixes in the destination encoding (TRANSLATE or IGNORE) along with the -c option, enters an infinite loop when processing invalid multi-byte input sequences, leading to a denial of service. The iconv feature in the GNU C Library (aka glibc or libc6) through 2.32, when processing invalid multi-byte input sequences in the EUC-KR encoding, may have a buffer over-read. A use-after-free vulnerability introduced in glibc upstream version 2.14 was found in the way the tilde expansion was carried out. Directory paths containing an initial tilde followed by a valid username were affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path that, when processed by the glob function, would potentially lead to arbitrary code execution. This was fixed in version 2.32. The GNU C Library (aka glibc or libc6) before 2.32 could overflow an on-stack buffer during range reduction if an input to an 80-bit long double function contains a non-canonical bit pattern, a seen when passing a 0x5d414141414141410000 value to sinl on x86 targets. This is related to sysdeps/ieee754/ldbl-96/e_rem_pio2l.c. The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid multi-byte input sequences in IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 encodings, fails to advance the input state, which could lead to an infinite lo…

msrc_CVE-2021-35942 — The wordexp function in the GNU C Library (aka glibc) through 2.33 may crash or read arbitrary memory in parse_param (i…

msrc_CVE-2021-35942

OESA-2021-1296 — glibc security update

Affected: openEuler:20.03-LTS-SP1: glibc, openEuler:20.03-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): An integer overflow flaw was found in glibc that may result in reading of arbitrary memory when wordexp is used with a specially crafted untrusted regular expression input.(CVE-2021-35942)

openSUSE-SU-2021:1374-1 — Security update for glibc

Security update for glibc

SUSE-SU-2021:14822-1 — Security update for glibc

Security update for glibc

UBUNTU-CVE-2021-35942

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

VDE-2022-010 — PHOENIX CONTACT: Multiple Linux component vulnerabilities fixed in latest AXC F x152 LTS release

PLCnext Control AXC F x152 is certified according to IEC 62443-4-1 and IEC 62443-4-2. This certification requires that all third-party components used in the firmware are regularly checked for known vulnerabilities.

Firmware components in version 2021.06 had already been updated. For the 2022.0 LTS version more firmware components have been updated implicitly fixing the vulnerabilities listed. The vulnerabilities listed above have not been individually verified in terms of actual impact and/or limitations in combination with the affected products listed. The current LTS release 2022.0 LTS contains updates of integrated third-party libraries, SDKs and other third-party software to address these issues nevertheless.

UPDATE A (April 4th, 2022): Added RFC 4072 (Art. No. 1051328) and fixed affected version of AXC F 3152

WID-SEC-W-2023-1432 — Siemens SIMATIC S7: Mehrere Schwachstellen

Ein Angreifer aus dem angrenzenden Netzwerk oder ein entfernter, anonymer, authentisierter, physischer oder lokaler Angreifer kann mehrere Schwachstellen in Siemens SIMATIC S7 ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand herbeizuführen, seine Privilegien zu erweitern und Daten zu manipulieren.