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NULL Pointer Dereference Affecting gnutls package, versions *

low

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-CENTOS8-GNUTLS-2404207
  • published 17 Feb 2022
  • disclosed 22 Dec 2021
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Introduced: 22 Dec 2021

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

How to fix?

There is no fixed version for Centos:8 gnutls.

NVD Description

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