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CVE-2022-45142

Published: 8 February 2023

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.

Notes

AuthorNote
mdeslaur
introduced in fix for CVE-2022-3437
rodrigo-zaiden
heimdal master branch not affected, only backports.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
heimdal
Launchpad, Ubuntu, Debian
bionic
Released (7.5.0+dfsg-1ubuntu0.4)
focal
Released (7.7.0+dfsg-1ubuntu1.4)
jammy Needs triage

kinetic Ignored
(end of life, was needs-triage)
lunar Ignored
(end of life, was needed)
mantic Needed

noble Needed

trusty
Released (1.6~git20131207+dfsg-1ubuntu1.2+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream Needs triage

xenial
Released (1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N