NULL Pointer Dereference Affecting krb5 package, versions <1.12+dfsg-2ubuntu5.4


low

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.16% (52nd percentile)
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NVD
6.5 medium

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  • Snyk ID SNYK-UBUNTU1404-KRB5-459138
  • published 16 Jan 2018
  • disclosed 16 Jan 2018

How to fix?

Upgrade Ubuntu:14.04 krb5 to version 1.12+dfsg-2ubuntu5.4 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 Ubuntu. See How to fix? for Ubuntu:14.04 relevant fixed versions and status.

An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. The pre-defined function "strlen" is getting a "NULL" string as a parameter value in plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c in the Key Distribution Center (KDC), which allows remote authenticated users to cause a denial of service (NULL pointer dereference) via a modified kadmin client.