Improper Input Validation Affecting gnutls package, versions <0:3.6.14-7.el8_3


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.54% (78th percentile)

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  • Snyk IDSNYK-RHEL8-GNUTLS-3912440
  • published26 Jul 2021
  • disclosed4 Sept 2020

Introduced: 4 Sep 2020

CVE-2020-24659  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade RHEL:8 gnutls to version 0:3.6.14-7.el8_3 or higher.
This issue was patched in RHSA-2020:5483.

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.

An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a no_renegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling path, where the gnutls_deinit function is called after detecting a handshake failure.

CVSS Scores

version 3.1