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://secunia.com/advisories/50598/
http://www.vuxml.org/freebsd/dee44ba9-08ab-11e2-a044-d0df9acfd7e5.html
Insight
The following package is affected: openx
