The remote host is missing an update to mod_security announced via advisory FEDORA-2009-2686.
Apply the appropriate updates. This update can be installed with the yum update program. Use su -c 'yum update mod_security' at the command line. For more information, refer to Managing Software with yum, available at http://docs.fedoraproject.org/yum/. https://secure1.securityspace.com/smysecure/catid.html?in=FEDORA-2009-2686
Update Information: Security fixes for potential denials of service when using PDF XSS protection as well as when parsing multipart requests. http://sourceforge.net/project/shownotes.php?release_id=667542&group_id=68846 ChangeLog: * Thu Mar 12 2009 Michael Fleming 2.5.9-1 - Update to upstream release 2.5.9 - Fixes potential DoS' in multipart request and PDF XSS handling