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Mageia 8 MGASA-2023-0098 Critical: Heimdal Message Integrity Issue

mageia
Calendar Grey March 18, 2023
Dist Mageia Esm H88
Revised heimdal software addresses a critical security flaw in Mageia, improving the robustness of cryptographic communications.
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

Summary

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 a logic inversion sneaked in causing the validation of message integrity codes in gssapi/arcfour to be inverted. (CVE-2022-45142)

References

- https://bugs.mageia.org/show_bug.cgi?id=31530

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

- https://lists.debian.org/debian-security-announce/2023/msg00033.html

- https://ubuntu.com/security/notices/USN-5849-1

- https://www.cve.org/CVERecord?id=CVE-2022-45142

Topics%20covered

Topics Covered

security advisory update critical security fix patch message integrity mageia

Resolution

SRPMS

- 8/core/heimdal-7.7.1-1.3.mga8

Severity
critical
Lowest
Low
Medium
High
Critical

Publication date: 18 Mar 2023
URL: https://advisories.mageia.org/MGASA-2023-0098.html
Type: security
CVE: CVE-2022-45142

Topics%20covered

Topics Covered

security advisory update critical security fix patch message integrity mageia

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