NULL Pointer Dereference Affecting gnutls28 package, versions <3.6.7-4+deb10u9


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.21% (60th percentile)

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  • Snyk IDSNYK-DEBIAN10-GNUTLS28-2419146
  • published8 Mar 2022
  • disclosed24 Aug 2022

Introduced: 8 Mar 2022

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

How to fix?

Upgrade Debian:10 gnutls28 to version 3.6.7-4+deb10u9 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls28 package and not the gnutls28 package as distributed by Debian. See How to fix? for Debian:10 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 Scores

version 3.1