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NULL Pointer Dereference Affecting krb5-devel package, versions <0:1.18.2-8.3.el8_4

medium

Snyk CVSS

    Attack Complexity Low
    Availability High
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NVD
7.5 high
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SUSE
7.5 high
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Red Hat
7.5 high

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  • Snyk ID SNYK-ORACLE8-KRB5DEVEL-2586639
  • published 10 Apr 2022
  • disclosed 22 Jul 2021
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Introduced: 22 Jul 2021

CVE-2021-36222 Open this link in a new tab
CWE-476 Open this link in a new tab

How to fix?

Upgrade Oracle:8 krb5-devel to version 0:1.18.2-8.3.el8_4 or higher.
This issue was patched in ELSA-2021-3576.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5-devel package and not the krb5-devel package as distributed by Oracle:8. See How to fix? for Oracle:8 relevant fixed versions and status.

ec_verify in kdc/kdc_preauth_ec.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.4 and 1.19.x before 1.19.2 allows remote attackers to cause a NULL pointer dereference and daemon crash. This occurs because a return value is not properly managed in a certain situation.