CVE-2010-2813
functions/imap_general.php in SquirrelMail before 1.4.21 does not properly handle 8-bit characters in passwords, which allows remote attackers to cause a denial of service (disk consumption) by making many IMAP login attempts with different usernames, leading to the creation of many preferences files.
Date published : 2010-08-19
http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html