Use After Free Affecting gnutls package, versions <0:3.6.16-4.el8


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
3.75% (89th percentile)

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  • Snyk IDSNYK-RHEL8-GNUTLS-4144586
  • published26 Jul 2021
  • disclosed12 Mar 2021

Introduced: 12 Mar 2021

CVE-2021-20231  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade RHEL:8 gnutls to version 0:3.6.16-4.el8 or higher.
This issue was patched in RHSA-2021:4451.

NVD Description

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

A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.

References

CVSS Base Scores

version 3.1