CVE-2022-45142
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...
Original description
The description as published by the source.
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.
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2022-45142 heimdal Fixed in: 7.7.1-r1
- Debian DEBIAN-CVE-2022-45142 heimdal Fixed in: 7.7.0+dfsg-2+deb11u3
- Ubuntu UBUNTU-CVE-2022-45142 heimdal Fixed in: 1.6~git20131207+dfsg-1ubuntu1.2+esm4
References
- advisory github.com
- advisory nvd.nist.gov
- advisory security.gentoo.org
- web openwall.com