Vulnerability Details 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 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 19.3%
CVSS Severity
CVSS v3 Score 7.5
References
Products affected by CVE-2022-45142
-
cpe:2.3:a:heimdal_project:heimdal:7.7.1
-
cpe:2.3:a:heimdal_project:heimdal:7.8.0