{"id":"UBUNTU-CVE-2013-6171","details":"checkpassword-reply in Dovecot before 2.2.7 performs setuid operations to a user who is authenticating, which allows local users to bypass authentication and access virtual email accounts by attaching to the process and using a restricted file descriptor to modify account information in the response to the dovecot-auth server.","modified":"2026-02-04T04:06:48.937110Z","published":"2013-12-09T00:00:00Z","withdrawn":"2025-07-18T16:42:56Z","related":["USN-3556-2"],"upstream":["CVE-2013-6171"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2013-6171"},{"type":"REPORT","url":"http://www.dovecot.org/list/dovecot-news/2013-November/000264.html"},{"type":"REPORT","url":"http://wiki2.dovecot.org/AuthDatabase/CheckPassword#Security"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3556-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2013-6171"}],"affected":[{"package":{"name":"dovecot","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/dovecot@1:2.2.9-1ubuntu2?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:2.2.9-1ubuntu2"}]}],"versions":["1:2.1.7-7ubuntu3","1:2.2.9-1ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"dovecot-core","binary_version":"1:2.2.9-1ubuntu2"},{"binary_name":"dovecot-dbg","binary_version":"1:2.2.9-1ubuntu2"},{"binary_name":"dovecot-dev","binary_version":"1:2.2.9-1ubuntu2"},{"binary_name":"dovecot-gssapi","binary_version":"1:2.2.9-1ubuntu2"},{"binary_name":"dovecot-imapd","binary_version":"1:2.2.9-1ubuntu2"},{"binary_version":"1:2.2.9-1ubuntu2","binary_name":"dovecot-ldap"},{"binary_name":"dovecot-lmtpd","binary_version":"1:2.2.9-1ubuntu2"},{"binary_name":"dovecot-managesieved","binary_version":"1:2.2.9-1ubuntu2"},{"binary_name":"dovecot-mysql","binary_version":"1:2.2.9-1ubuntu2"},{"binary_name":"dovecot-pgsql","binary_version":"1:2.2.9-1ubuntu2"},{"binary_name":"dovecot-pop3d","binary_version":"1:2.2.9-1ubuntu2"},{"binary_name":"dovecot-sieve","binary_version":"1:2.2.9-1ubuntu2"},{"binary_name":"dovecot-solr","binary_version":"1:2.2.9-1ubuntu2"},{"binary_name":"dovecot-sqlite","binary_version":"1:2.2.9-1ubuntu2"},{"binary_name":"mail-stack-delivery","binary_version":"1:2.2.9-1ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2013/UBUNTU-CVE-2013-6171.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"low"}]}