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

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.21% (59th percentile)
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NVD
6.5 medium
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SUSE
6.5 medium
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Red Hat
6.5 medium

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  • Snyk ID SNYK-DEBIAN10-GNUTLS28-2419146
  • published 8 Mar 2022
  • disclosed 24 Aug 2022
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Introduced: 8 Mar 2022

CVE-2021-4209 Open this link in a new tab
CWE-476 Open this link 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.