DDIVRT-2008-11 BadBlue uninst.exe DoS
Title
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DDIVRT-2008-11 BadBlue uninst.exe DoS
Severity
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Medium
Date Discovered
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March 5th 2008
Discovered By
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Digital Defense, Inc. Vulnerability Research Team
Credit: Steven James and r@b13$
Vulnerability Description
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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
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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)
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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
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Vendor Name: BadBlue
Vendor Website: www.badblue.com