GLSA-202208-24 : GNU C Library: Multiple Vulnerabilities

critical Nessus Plugin ID 164108

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Description

The remote host is affected by the vulnerability described in GLSA-202208-24 (GNU C Library: Multiple Vulnerabilities)

- 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. (CVE-2021-35942)

- In librt in the GNU C Library (aka glibc) through 2.34, sysdeps/unix/sysv/linux/mq_notify.c mishandles certain NOTIFY_REMOVED data, leading to a NULL pointer dereference. NOTE: this vulnerability was introduced as a side effect of the CVE-2021-33574 fix. (CVE-2021-38604)

- The deprecated compatibility function svcunix_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its path argument on the stack without validating its length, which may result in a buffer overflow, potentially resulting in a denial of service or (if an application is not built with a stack protector enabled) arbitrary code execution. (CVE-2022-23218)

- The deprecated compatibility function clnt_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its hostname argument on the stack without validating its length, which may result in a buffer overflow, potentially resulting in a denial of service or (if an application is not built with a stack protector enabled) arbitrary code execution. (CVE-2022-23219)

- Please review the referenced CVE identifiers for details. (CVE-2021-3998)

- glibc: Off-by-one buffer overflow/underflow in getcwd() (CVE-2021-3999)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

All GNU C Library users should upgrade to the latest version:

# emerge --sync # emerge --ask --oneshot --verbose >=sys-libs/glibc-2.34-r7

Plugin Details

Severity: Critical

ID: 164108

File Name: gentoo_GLSA-202208-24.nasl

Version: 1.3

Type: local

Family: Gentoo Local Security Checks

Published: 8/15/2022

Updated: 10/16/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.2

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2022-23219

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:glibc, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/14/2022

Vulnerability Publication Date: 7/22/2021

Reference Information

CVE: CVE-2021-35942, CVE-2021-38604, CVE-2021-3998, CVE-2021-3999, CVE-2022-23218, CVE-2022-23219

Detections

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