The remote host is missing an update to the system as announced in the referenced advisory.

Update your system with the appropriate patches or software upgrades. http://squidclamav.darold.net/news.html http://www.vuxml.org/freebsd/8defa0f9-ee8a-11e1-8bd8-0022156e8794.html

The following package is affected: squidclamav CVE-2012-3501 The squidclamav_check_preview_handler function in squidclamav.c in SquidClamav 5.x before 5.8 and 6.x before 6.7 passes an unescaped URL to a system command call, which allows remote attackers to cause a denial of service (daemon crash) via a URL with certain characters, as demonstrated using %0D or %0A.