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NULL Pointer Dereference Affecting libgnutls30-hmac-32bit package, versions <3.6.7-150000.6.45.2

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-SLES150-LIBGNUTLS30HMAC32BIT-2986921
  • published 18 Aug 2022
  • disclosed 17 Aug 2022
Report a new vulnerability Found a mistake?

Introduced: 17 Aug 2022

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

How to fix?

Upgrade SLES:15.0 libgnutls30-hmac-32bit to version 3.6.7-150000.6.45.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libgnutls30-hmac-32bit package and not the libgnutls30-hmac-32bit 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.