<p>Upgrade <code>Ubuntu:18.04</code> <code>heimdal</code> to version 7.5.0+dfsg-1ubuntu0.4 or higher.</p>

Improper Validation of Integrity Check Value Affecting heimdal package, versions <7.5.0+dfsg-1ubuntu0.4

Snyk CVSS

Attack Complexity Low

Integrity High

Threat Intelligence

EPSS 0.07% (28^th percentile)

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Snyk ID SNYK-UBUNTU1804-HEIMDAL-3315890
published 8 Feb 2023
disclosed 6 Mar 2023

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Introduced: 8 Feb 2023

CVE-2022-45142 Open this link in a new tab CWE-354 Open this link in a new tab

How to fix?

Upgrade Ubuntu:18.04 heimdal to version 7.5.0+dfsg-1ubuntu0.4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream heimdal package and not the heimdal package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

The fix for CVE-2022-3437 included changing memcmp to be constant time and a workaround for a compiler bug by adding "!= 0" comparisons to the result of memcmp. When these patches were backported to the heimdal-7.7.1 and heimdal-7.8.0 branches (and possibly other branches) a logic inversion sneaked in causing the validation of message integrity codes in gssapi/arcfour to be inverted.