Korean
<< Back
VID 22534
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 2.2.21. It therefore is potentially affected by a denial of service vulnerability.

An error exists in the 'mod_proxy_ajp' module that can allow specially crafted HTTP requests to cause a backend server to temporarily enter an error state. This vulnerability only occurs when 'mod_proxy_ajp' is used along with 'mod_proxy_balancer'.

* 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_2.2.21
http://httpd.apache.org/security/vulnerabilities_22.html

* Platforms Affected:
Apache HTTP versions 2.2 prior to 2.2.21
Any operating system Any version
Recommendation Upgrade to the latest version of Apache HTTP Server (2.2.21 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-2011-3348 (CVE)
Related URL 49616 (SecurityFocus)
Related URL (ISS)