Title: Nullsoft Winamp Minibrowser ID3v2 Buffer Overflow Vulnerability
Severity: HIGH
Description:
Nullsoft Winamp is a media player for Microsoft Windows supporting MP3 and other filetypes.
ID3v2 is a tagging system that enables users to include relevant information about audio files within them.
Versions of Winamp are vulnerable to a stack overflow triggered during the processing of ID3v2 tags.
If a user modifies the title field of the ID3v2 tag with arbitrary characters, when parsed by Winamp, the overflow occurs.
This has only been reported to occur when the minibrowser is enabled. By design, the player will prepare to connect to the Winamp site, in order to gather additional information on the media file. Winamp constructs a URL containing the data from the file's ID3v2 tag, once the URL is created, the extraneous data in the title field will overflow the affected buffer.
This overflow could overwrite stack variables, including the return address, and be used to execute arbitrary code. However, including random data could cause the application to crash.
It should be noted that this was tested on version 2.79, previous versions may also be affected by this issue.
Affected Products:
- NullSoft Winamp 2.79.0
References:
- NullSoft: Winamp Home Page
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