radware AppWall Web Application Firewall: Source code disclosure on management interface

From: Kirchner Michael <sec08003@fh-hagenberg.at>
To: bugtraq@securityfocus.com
Subject: radware AppWall Web Application Firewall: Source code disclosure on management interface

Security Advisory
Vulnerable Software:     radware AppWall Web Application Firewall
Vulnerable Version:        Gateway Version / AppWall Version
Homepage:                     http://www.radware.com/
Found by:                   Michael Kirchner, Wolfgang Neudorfer,
Lukas Nothdurfter (Team h4ck!nb3rg)  
Impact:                     Source code disclosure on management interface

Product Description
Radware's AppWall is a Web application firewall (WAF) appliance that
secures Web applications. It enables PCI compliance by mitigating Web
application security threats and vulnerabilities to prevent data theft
and manipulation of sensitive corporate and customer information.
AppWall incorporates advanced, patent-protected Web application security
filtering technologies to seamlessly detect threats, block attacks and
report events.

Vulnerability Description
The radware AppWall Web Application Firewall operates as a reverse proxy
between the clients and the web server to be protected. All HTTP
requests are checked before being forwarded to the web server. The
system can be administered via a seperate management interface which is
normally not accessible for external users. The web interface is
realised using the PHP programming language. Some of the functionality
is stored in include files and embedded when needed. The files have a
*.inc extension and are not interpreted by the web server. A
user/attacker with access to the web management interface can therefore
access parts of the product source code by requesting the included files

Proof of Conept
The following example requests reveal product source code enabling an
attacker to search for further implementation vulnerabilities:

Vulnerable Versions
The tested version was Gateway Version / AppWall Version Prior versions are also likely to be vulnerable.

Currently we are not aware of any patch or update available.

Contact Timeline
2009-06-01: Vendor informed
2009-06-15: No response yet. Vendor contacted again. 
2009-06-15: Initial vendor reply (Support ticket opened)
2009-07-01: No response yet as far as the vulnerability is concerned.
Public release 

Further information
Information about the web application firewall project this advisory
originates from can be found at:

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