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NULL Pointer Dereference Affecting krb5 package, versions <1.18.3-6+deb11u1

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.27% (68th 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-DEBIAN11-KRB5-1568499
  • published 21 Aug 2021
  • disclosed 23 Aug 2021
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Introduced: 21 Aug 2021

CVE-2021-37750 Open this link in a new tab
CWE-476 Open this link in a new tab

How to fix?

Upgrade Debian:11 krb5 to version 1.18.3-6+deb11u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5 package and not the krb5 package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.5 and 1.19.x before 1.19.3 has a NULL pointer dereference in kdc/do_tgs_req.c via a FAST inner body that lacks a server field.