Argument injection vulnerability in Dovecot 1.0.x before 1.0.13, and 1.1.x before 1.1.rc3, when using blocking passdbs, allows remote attackers to bypass the password check via a password containing TAB characters, which are treated as argument delimiters that enable the skip_password_check field to be specified.
https://www.redhat.com/archives/fedora-package-announce/2008-March/msg00381.html
https://www.redhat.com/archives/fedora-package-announce/2008-March/msg00358.html
https://www.exploit-db.com/exploits/5257
https://issues.rpath.com/browse/RPL-2341
https://exchange.xforce.ibmcloud.com/vulnerabilities/41085
http://www.securityfocus.com/bid/28181
http://www.securityfocus.com/archive/1/489481/100/0/threaded
http://www.dovecot.org/list/dovecot-news/2008-March/000065.html
http://www.dovecot.org/list/dovecot-news/2008-March/000064.html
http://www.debian.org/security/2008/dsa-1516
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0108
http://security.gentoo.org/glsa/glsa-200803-25.xml
http://secunia.com/advisories/32151
http://secunia.com/advisories/29557
http://secunia.com/advisories/29396
http://secunia.com/advisories/29385
http://secunia.com/advisories/29364
http://secunia.com/advisories/29295
http://secunia.com/advisories/29226
http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00004.html