SquirrelMail: Cross-site scripting and IMAP command injection
Gentoo Linux Security Advisory
||GLSA 200603-09 / squirrelmail
||March 12, 2006
||March 12, 2006: 01
All supported architectures
SquirrelMail is vulnerable to several cross-site scripting vulnerabilities
and IMAP command injection.
SquirrelMail is a webmail package written in PHP. It supports IMAP
and SMTP protocols.
SquirrelMail does not validate the right_frame parameter in
webmail.php, possibly allowing frame replacement or cross-site
scripting (CVE-2006-0188). Martijn Brinkers and Scott Hughes discovered
that MagicHTML fails to handle certain input correctly, potentially
leading to cross-site scripting (only Internet Explorer,
CVE-2006-0195). Vicente Aguilera reported that the
sqimap_mailbox_select function did not strip newlines from the mailbox
or subject parameter, possibly allowing IMAP command injection
By exploiting the cross-site scripting vulnerabilities, an
attacker can execute arbitrary scripts running in the context of the
victim's browser. This could lead to a compromise of the user's webmail
account, cookie theft, etc. A remote attacker could exploit the IMAP
command injection to execute arbitrary IMAP commands on the configured
There is no known workaround at this time.
All SquirrelMail users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=mail-client/squirrelmail-1.4.6"
Note: Users with the vhosts USE flag set should manually use
webapp-config to finalize the update.