The remote host is missing updates announced in advisory GLSA 200408-19.

All courier-imap users should upgrade to the latest version: # emerge sync # emerge -pv '>=net-mail/courier-imap-3.0.5' # emerge '>=net-mail/courier-imap-3.0.5' http://www.securityspace.com/smysecure/catid.html?in=GLSA%20200408-19 http://bugs.gentoo.org/show_bug.cgi?id=60865 http://www.idefense.com/application/poi/display?id=131&type=vulnerabilities&flashstatus=true

There is a format string vulnerability in non-standard configurations of courier-imapd which may be exploited remotely. An attacker may be able to execute arbitrary code as the user running courier-imapd (oftentimes root).