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Use After Free Affecting glibc package, versions <0:2.28-164.el8

medium

Snyk CVSS

    Attack Complexity High

    Threat Intelligence

    EPSS 0.05% (15th percentile)
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NVD
2.5 low
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Red Hat
2.5 low

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  • Snyk ID SNYK-CENTOS8-GLIBC-2139494
  • published 26 Jul 2021
  • disclosed 24 Feb 2021
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Introduced: 24 Feb 2021

CVE-2021-27645 Open this link in a new tab
CWE-416 Open this link in a new tab

How to fix?

Upgrade Centos:8 glibc to version 0:2.28-164.el8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Centos:8. See How to fix? for Centos: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.