{"id":"USN-7806-1","summary":"pam-u2f vulnerability","details":"It was discovered that PAM/U2F could allow for authentication bypass in\nsome configurations. An attacker could possibly use this issue to execute\narbitrary code or cause a denial of service.","modified":"2026-02-10T04:50:11Z","published":"2025-10-06T16:35:59Z","related":["UBUNTU-CVE-2025-23013"],"upstream":["CVE-2025-23013","UBUNTU-CVE-2025-23013"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7806-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-23013"}],"affected":[{"package":{"name":"pam-u2f","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/pam-u2f@1.0.8-1ubuntu0.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.8-1ubuntu0.1~esm1"}]}],"versions":["1.0.8-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"1.0.8-1ubuntu0.1~esm1","binary_name":"libpam-u2f"},{"binary_name":"pamu2fcfg","binary_version":"1.0.8-1ubuntu0.1~esm1"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2025-23013","severity":[{"score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7806-1.json"}},{"package":{"name":"pam-u2f","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/pam-u2f@1.1.0-1.1+deb12u1build0.22.04.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.0-1.1+deb12u1build0.22.04.1"}]}],"versions":["1.1.0-1.1","1.1.0-1.1build1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libpam-u2f","binary_version":"1.1.0-1.1+deb12u1build0.22.04.1"},{"binary_name":"pamu2fcfg","binary_version":"1.1.0-1.1+deb12u1build0.22.04.1"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-23013"}],"ecosystem":"Ubuntu:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7806-1.json"}},{"package":{"name":"pam-u2f","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/pam-u2f@1.1.0-1.1+deb12u1build0.24.04.1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.0-1.1+deb12u1build0.24.04.1"}]}],"versions":["1.1.0-1.1build1","1.1.0-1.1build2","1.1.0-1.1build3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libpam-u2f","binary_version":"1.1.0-1.1+deb12u1build0.24.04.1"},{"binary_name":"pamu2fcfg","binary_version":"1.1.0-1.1+deb12u1build0.24.04.1"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-23013"}],"ecosystem":"Ubuntu:24.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7806-1.json"}}],"schema_version":"1.7.3"}