NULL Pointer Dereference Affecting gnutls package, versions <3.6.7-150000.6.45.2


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
1.79% (78th percentile)

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  • Snyk IDSNYK-SLES150-GNUTLS-2986909
  • published18 Aug 2022
  • disclosed17 Aug 2022

Introduced: 17 Aug 2022

CVE-2021-4209  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade SLES:15.0 gnutls to version 3.6.7-150000.6.45.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls package and not the gnutls package as distributed by SLES. See How to fix? for SLES:15.0 relevant fixed versions and status.

A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.

CVSS Base Scores

version 3.1