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DDIVRT-2008-11 BadBlue uninst.exe DoS
From: vulnerabilityresearch () digitaldefense net
Date: 24 Apr 2008 12:08:41 -0000

Title
-----
DDIVRT-2008-11 BadBlue uninst.exe DoS

Severity
--------
Medium

Date Discovered
---------------
March 5th 2008

Discovered By
-------------
Digital Defense, Inc. Vulnerability Research Team
Credit: Steven James and r () b13$

Vulnerability Description
-------------------------
BadBlue is a web server used for peer-to-peer file sharing. By default, several executable files are stored in the web 
root: badblue.exe, uninst.exe, and dyndns.exe. Executable files stored in the web root of BadBlue can be launched 
remotely by any user. This can be leveraged to create a DoS condition by repeatedly invoking the uninst.exe executable. 
Due to the fact that BadBlue has not released a patch for the previously documented directory traversal vulnerability 
(CVE 2007-6378), an attacker may utilize these two flaws in conjunction to place a malicious executable in the web root 
and compromise a vulnerable server. 

Solution Description
--------------------
Restrict access to the executables already in the web root (badblue.exe, uninst.exe, and dyndns.exe) and take steps to 
ensure that users cannot write files to the web root.

Tested Systems / Software (with versions)
------------------------------------------
BadBlue Personal Edition version 2.72 has been tested on Windows XP and Windows Server 2003.  Other versions and 
systems are assumed to be vulnerable.

Vendor Contact
--------------
Vendor Name: BadBlue
Vendor Website: www.badblue.com


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