Apache 2.2.x < 2.2.18 APR apr_fnmatch DoS

This script is Copyright (C) 2011-2015 Tenable Network Security, Inc.

Synopsis :

The remote web server may be affected by a denial of service

Description :

According to its banner, the version of Apache 2.2.x running on the
remote host is prior to 2.2.18. It is, therefore, affected by a denial
of service vulnerability due to an error in the apr_fnmatch() 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. Nessus did not try to determine whether the affected
module is in use or to check for the issue itself.

See also :


Solution :

Upgrade to Apache version 2.2.18 or later. Alternatively, ensure that
the 'IndexOptions' configuration option is set to 'IgnoreClient'.

Risk factor :

Medium / CVSS Base Score : 4.3
CVSS Temporal Score : 3.7
Public Exploit Available : true

Family: Web Servers

Nessus Plugin ID: 53896 ()

Bugtraq ID: 47820

CVE ID: CVE-2011-0419