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VID 22521
Severity 30
Port 80, ...
Protocol TCP
Class WWW
Detailed Description According to its banner, the version of Apache 2.2 installed on the remote host is older than 2.2.18. Such versions are affected by a denial of service vulnerability due to an error in the 'apr_fnmatch' match function of the bundled APR library.

If mod_autoindex is enabled and has indexed a directory containing files whose filenames are long, an attacker can cause high CPU usage with a specially crafted request.

Note that the remote web server may not actually be affected by this vulnerability.

* Note: This check solely relied on the version number of the remote Web server to assess this vulnerability, so this might be a false positive.

* References:
http://www.apache.org/dist/httpd/CHANGES_2.2.18
http://httpd.apache.org/security/vulnerabilities_22.html#2.2.18
http://securityreason.com/achievement_securityalert/98

* Platforms Affected:
Apache HTTP versions 2.2 prior to 2.2.18
Any operating system Any version
Recommendation Upgrade to the latest version of Apache HTTP Server (2.2.18 or later), available from the Apache Software Foundation download site, http://httpd.apache.org/download.cgi
-- OR --
As a workaround, ensure that the affected modules are not in use.
Related URL CVE-2011-0419 (CVE)
Related URL 47820 (SecurityFocus)
Related URL (ISS)