CVE-2022-45142

HIGH

Heimdal - Improper Validation of Integrity Check Value in GSSAPI ArcFour

Title source: llm

Description

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.

References (2)

Core 2

Core References

Mailing List

https://www.openwall.com/lists/oss-security/2023/02/08/1

Third Party Advisory vendor-advisory

https://security.gentoo.org/glsa/202310-06

Scores

CVSS v3 7.5

EPSS 0.0049

EPSS Percentile 37.9%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-354

Status published

Products (2)

heimdal_project/heimdal 7.7.1

heimdal_project/heimdal 7.8.0

Published Mar 06, 2023

Tracked Since Feb 18, 2026