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Category:   Application (Web Server/CGI)  >   Apache HTTPD Vendors:   Apache Software Foundation
Apache mod_proxy/mod_rewrite Bug Lets Remote Users Access Internal Servers
SecurityTracker Alert ID:  1026353
SecurityTracker URL:  http://securitytracker.com/id/1026353
CVE Reference:   CVE-2011-4317   (Links to External Site)
Updated:  Feb 1 2012
Original Entry Date:  Nov 24 2011
Impact:   Host/resource access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.2.21 and prior versions
Description:   A vulnerability was reported in Apache. A remote user can access internal servers.

When this system is configured in reverse proxy mode and uses the RewriteRule or ProxyPassMatch directives with a pattern match, a remote user can send a specially crafted request to access internal servers.

Prutha Parikh from Qualys reported this vulnerability.

Impact:   A remote user can access internal servers.
Solution:   The vendor has issued a fix (2.2.22).

The vendor's advisory is available at:

http://thread.gmane.org/gmane.comp.apache.devel/46440

Vendor URL:  httpd.apache.org/ (Links to External Site)
Cause:   Access control error, Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
May 1 2012 (IBM Issues Fix for IBM HTTP Server for OS/400) Apache mod_proxy/mod_rewrite Bug Lets Remote Users Access Internal Servers
IBM has issued a fix for IBM HTTP Server for OS/400.



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