CVE-2013-6171

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.

🔗 References (10)

• cve@mitrehttp://cpanel.net/tsr-2013-0010-full-disclosure/
• cve@mitrehttp://secunia.com/advisories/54808
• cve@mitrehttp://wiki2.dovecot.org/AuthDatabase/CheckPassword#Security
• cve@mitrehttp://www.dovecot.org/list/dovecot-news/2013-November/000264.html
• cve@mitrehttps://usn.ubuntu.com/3556-2/
• af854a3a-2127-422b-91ae-364da2661108http://cpanel.net/tsr-2013-0010-full-disclosure/
• af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/54808
• af854a3a-2127-422b-91ae-364da2661108http://wiki2.dovecot.org/AuthDatabase/CheckPassword#Security
• af854a3a-2127-422b-91ae-364da2661108http://www.dovecot.org/list/dovecot-news/2013-November/000264.html
• af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3556-2/