Summary
The remote host is missing an update to the system as announced in the referenced advisory.
Solution
Update your system with the appropriate patches or software upgrades.
http://sourceforge.net/mailarchive/message.php?msg_name=4A727634.3080008%40squirrelmail.org http://squirrelmail.org/index.php
http://www.vuxml.org/freebsd/0d0237d0-7f68-11de-984d-0011098ad87f.html
Insight
The following package is affected: squirrelmail-multilogin-plugin
