{"id":"UBUNTU-CVE-2016-4422","details":"The pam_sm_authenticate function in pam_sshauth.c in libpam-sshauth might allow context-dependent attackers to bypass authentication or gain privileges via a system user account.","modified":"2025-09-08T16:43:44Z","published":"2016-05-06T17:59:00Z","upstream":["CVE-2016-4422"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-4422"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2016/05/01/2"},{"type":"REPORT","url":"https://bazaar.launchpad.net/~ltsp-upstream/ltsp/libpam-sshauth/revision/93/src/pam_sshauth.c"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-4422"}],"affected":[{"package":{"name":"libpam-sshauth","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/libpam-sshauth@0.3.1-1deb8u1build0.14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.3.1-1deb8u1build0.14.04.1"}]}],"versions":["0.3.1-1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libpam-sshauth","binary_version":"0.3.1-1deb8u1build0.14.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-4422.json"}},{"package":{"name":"libpam-sshauth","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libpam-sshauth@0.3.1-1ubuntu2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.3.1-1ubuntu2"}]}],"versions":["0.3.1-1","0.3.1-1ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libpam-sshauth","binary_version":"0.3.1-1ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-4422.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]}