NULL Pointer Dereference Affecting krb5-libs 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-CENTOS8-KRB5LIBS-2120137
  • published 26 Jul 2021
  • disclosed 12 Jul 2021

How to fix?

Upgrade Centos:8 krb5-libs to version 0:1.18.2-8.3.el8_4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5-libs package and not the krb5-libs package as distributed by Centos:8. See How to fix? for Centos: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.