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://pubcookie.org/news/20061106-empty-auth-secadv.html http://www.vuxml.org/freebsd/1ca8228f-858d-11e0-a76c-000743057ca2.html
Insight
The following package is affected: ap20-mod_pubcookie
