#######################################################################
Luigi Auriemma
Application: CoolPlayer
http://coolplayer.sourceforge.net
Versions: <= 217
Platforms: Windows
Bug: buffer-overflow in CPLI_ReadTag_OGG
Exploitation: local
Date: 28 Dec 2007
Author: Luigi Auriemma
e-mail: [EMAIL PROTECTED]
web: aluigi.org
#######################################################################
1) Introduction
2) Bug
3) The Code
4) Fix
#######################################################################
===============
1) Introduction
===============
CoolPlayer is a tiny open source media player for Windows.
#######################################################################
======
2) Bug
======
The tags in the OGG Vorbis files are handled by the CPLI_ReadTag_OGG
function which uses sscanf for storing the tag's name and its value in
two stack buffers but the lack of size limiters in the format argument
results in a buffer-overflow.
>From CPI_PlaylistItem.c:
void CPLI_ReadTag_OGG(CPs_PlaylistItem* pItem)
...
char cTag[128];
char cValue[2048];
if(sscanf(pComment->user_comments[iCommentIDX], " %[^= ] = %[^=]",
cTag, cValue) == 2)
...
#######################################################################
===========
3) The Code
===========
vorbiscomment -t cTag=AAA_2500_A's_AAA -a input.ogg output.ogg
#######################################################################
======
4) Fix
======
The problem has been reported to the developers which have said that
will work on this and on any other old public bug.
#######################################################################
---
Luigi Auriemma
http://aluigi.org
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/
