{"id":"AZL-34797","summary":"CVE-2022-45142 affecting package heimdal for versions less than 7.8.0-3","details":"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.","modified":"2026-04-21T04:27:25.889911Z","published":"2023-03-06T23:15:11Z","upstream":["CVE-2022-45142"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-45142"}],"affected":[{"package":{"name":"heimdal","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/heimdal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.8.0-3"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-34797.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}