{"id":"UBUNTU-CVE-2018-9275","details":"In check_user_token in util.c in the Yubico PAM module (aka pam_yubico) 2.18 through 2.25, successful logins can leak file descriptors to the auth mapping file, which can lead to information disclosure (serial number of a device) and/or DoS (reaching the maximum number of file descriptors).","modified":"2025-10-24T04:46:58Z","published":"2018-04-04T18:29:00Z","upstream":["CVE-2018-9275"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-9275"},{"type":"REPORT","url":"https://bugzilla.opensuse.org/show_bug.cgi?id=1088027"},{"type":"REPORT","url":"https://github.com/Yubico/yubico-pam/issues/136"},{"type":"REPORT","url":"https://github.com/Yubico/yubico-pam/commit/0f6ceabab0a8849b47f67d727aa526c2656089ba"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-9275"}],"affected":[{"package":{"name":"yubico-pam","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/yubico-pam@2.20-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.19-1","2.20-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libpam-yubico","binary_version":"2.20-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-9275.json"}},{"package":{"name":"yubico-pam","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/yubico-pam@2.23-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.23-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libpam-yubico","binary_version":"2.23-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-9275.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}