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


Security Advisory
---------------------------------------
Vulnerable Software: radware AppWall Web Application Firewall
Vulnerable Version: Gateway Version 4.6.0.2 / AppWall Version
1.0.2.6
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.
[Source:
http://www.radware.com/Products/ApplicationDelivery/AppWall/default.aspx
]


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
directly.


Proof of Conept
---------------------------------------
The following example requests reveal product source code enabling an
attacker to search for further implementation vulnerabilities:
https://appwall/Management/funcs.inc
https://appwall/Management/defines.inc
https://appwall/Management/msg.inc


Vulnerable Versions
---------------------------------------
The tested version was Gateway Version 4.6.0.2 / AppWall Version
1.0.2.6. Prior versions are also likely to be vulnerable.


Patch
---------------------------------------
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:
http://www.h4ck1nb3rg.at/wafs/

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