Double Free Affecting glibc-utils package, versions <0:2.28-164.el8


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.37% (30th percentile)

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  • Snyk IDSNYK-ALMALINUX8-GLIBCUTILS-5651892
  • published28 May 2023
  • disclosed9 Nov 2021

Introduced: 9 Nov 2021

CVE-2021-27645  (opens in a new tab)
CWE-415  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 glibc-utils to version 0:2.28-164.el8 or higher.
This issue was patched in ALSA-2021:4358.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc-utils package and not the glibc-utils package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

The nameserver caching daemon (nscd) in the GNU C Library (aka glibc or libc6) 2.29 through 2.33, when processing a request for netgroup lookup, may crash due to a double-free, potentially resulting in degraded service or Denial of Service on the local system. This is related to netgroupcache.c.

CVSS Base Scores

version 3.1