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://www.watchfire.com/resources/HTTP-Request-Smuggling.pdf http://www.vuxml.org/freebsd/651996e0-fe07-11d9-8329-000e0c2e438a.html

The following packages are affected: apache apache+ipv6 apache_fp apache+ssl apache+mod_perl apache+mod_ssl apache+mod_ssl+ipv6 ru-apache ru-apache+mod_ssl CVE-2005-2088 Apache 2.0.45 and 1.3.29, when acting as an HTTP proxy, allows remote attackers to poison the web cache, bypass web application firewall protection, and conduct XSS attacks via an HTTP request with both a 'Transfer-Encoding: chunked' header and a Content-Length header, which causes Apache to incorrectly handle and forward the body of the request in a way that causes the receiving server to process it as a separate HTTP request, aka 'HTTP Request Smuggling.'