SquirrelMail Gpg Plugin 2.1_dev

The G/PGP (GPG) Plugin 2.0, and 2.1dev before 20060912, for Squirrelmail allows remote attackers to execute arbitrary commands via shell metacharacters in the messageSignedText parameter to the gpg_check_sign_pgp_mime function in gpg_hook_functions.php. NOTE: a parameter value can be set in the contents of an e-mail message.

Multiple directory traversal vulnerabilities in the G/PGP (GPG) Plugin 2.0, and 2.1dev before 20070614, for Squirrelmail allow remote authenticated users to include and execute arbitrary local files via a .. (dot dot) in the help parameter to (1) gpg_help.php or (2) gpg_help_base.php.