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CVE-2022-45142

Date: March 5, 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.

Language: C

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2022-45142
https://security-tracker.debian.org/tracker/CVE-2022-45142
https://www.openwall.com/lists/oss-security/2023/02/08/1
https://security.alpinelinux.org/vuln/CVE-2022-45142
https://security.gentoo.org/glsa/202310-06
https://www.mend.io/vulnerability-database/CVE-2022-45142

Severity Score

Weakness Type (CWE)

Improper Validation of Integrity Check Value

CWE-354

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

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