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://secunia.com/advisories/8612/ http://marc.theaimsgroup.com/?l=full-disclosure&m=105053485515811 http://www.vuxml.org/freebsd/af747389-42ba-11d9-bd37-00065be4b5b6.html

The following package is affected: mod_access_referer CVE-2003-1054 mod_access_referer 1.0.2 allows remote attackers to cause a denial of service (crash) via a malformed Referer header that is missing a hostname, as parsed by the ap_parse_uri_components function in Apache, which triggers a null dereference.