{"id":"USN-8601-1","summary":"pam vulnerability","details":"It was discovered that PAM had a timing discrepancy in the pam_userdb\nmodule when comparing plaintext passwords. An attacker could possibly use\nthis issue to obtain sensitive information by measuring response-timing\ndifferences during repeated authentication attempts.","modified":"2026-07-24T01:35:02.512249924Z","published":"2026-07-23T14:49:52Z","related":["UBUNTU-CVE-2026-54411"],"upstream":["CVE-2026-54411","UBUNTU-CVE-2026-54411"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8601-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-54411"}],"affected":[{"package":{"name":"pam","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/pam?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.0-11ubuntu2.7"}]}],"versions":["1.3.1-5ubuntu11","1.4.0-10ubuntu1","1.4.0-10ubuntu2","1.4.0-11ubuntu1","1.4.0-11ubuntu2","1.4.0-11ubuntu2.1","1.4.0-11ubuntu2.3","1.4.0-11ubuntu2.4","1.4.0-11ubuntu2.5","1.4.0-11ubuntu2.6"],"ecosystem_specific":{"binaries":[{"binary_version":"1.4.0-11ubuntu2.7","binary_name":"libpam-cracklib"},{"binary_name":"libpam-modules","binary_version":"1.4.0-11ubuntu2.7"},{"binary_version":"1.4.0-11ubuntu2.7","binary_name":"libpam-modules-bin"},{"binary_version":"1.4.0-11ubuntu2.7","binary_name":"libpam-runtime"},{"binary_version":"1.4.0-11ubuntu2.7","binary_name":"libpam0g"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2026-54411","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/AU:N/V:D"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8601-1.json"}},{"package":{"name":"pam","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/pam?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.3-5ubuntu5.6"}]}],"versions":["1.5.2-6ubuntu1","1.5.2-9.1ubuntu1","1.5.2-9.1ubuntu2","1.5.2-9.1ubuntu3","1.5.3-5ubuntu3","1.5.3-5ubuntu4","1.5.3-5ubuntu5","1.5.3-5ubuntu5.1","1.5.3-5ubuntu5.4","1.5.3-5ubuntu5.5"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libpam-modules","binary_version":"1.5.3-5ubuntu5.6"},{"binary_version":"1.5.3-5ubuntu5.6","binary_name":"libpam-modules-bin"},{"binary_version":"1.5.3-5ubuntu5.6","binary_name":"libpam-runtime"},{"binary_name":"libpam0g","binary_version":"1.5.3-5ubuntu5.6"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:24.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/AU:N/V:D"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-54411"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8601-1.json"}},{"package":{"name":"pam","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/pam?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.0-5ubuntu3.1"}]}],"versions":["1.7.0-5ubuntu2","1.7.0-5ubuntu3"],"ecosystem_specific":{"binaries":[{"binary_name":"libpam-modules","binary_version":"1.7.0-5ubuntu3.1"},{"binary_version":"1.7.0-5ubuntu3.1","binary_name":"libpam-modules-bin"},{"binary_version":"1.7.0-5ubuntu3.1","binary_name":"libpam-runtime"},{"binary_version":"1.7.0-5ubuntu3.1","binary_name":"libpam0g"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:26.04:LTS","cves":[{"id":"CVE-2026-54411","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/AU:N/V:D"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8601-1.json"}}],"schema_version":"1.7.5"}