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Home arrow SecurityAlert Database

Arrow  Topic :

Buffer-overflow in the XM loader of Cheese Tracker 0.9.9


Arrow  SecurityAlert : 1291
Arrow  CVE : CVE-2006-3814
Arrow  SecurityRisk : Medium  Security Risk Medium  (About)
Arrow  Remote Exploit : No
Arrow  Local Exploit : Yes
Arrow  Exploit Available : Yes
Arrow  Credit : Luigi Auriemma (aluigi autistici org)
Arrow  Published : 28.07.2006

Arrow  Affected Software : Cheese Tracker <= 0.9.9 and current CVS



Arrow  Advisory Content :  

#######################################################################

Luigi Auriemma

Application: Cheese Tracker
http://reduz.com.ar/cheesetracker/
http://sourceforge.net/projects/cheesetronic
Versions: <= 0.9.9 and current CVS
Platforms: *nix and others
Bug: buffer-overflow in Loader_XM::load_instrument_internal
Exploitation: local
Date: 23 Jul 2006
Author: Luigi Auriemma
e-mail: aluigi (at) autistici (dot) org [email concealed]
web: aluigi.org

#######################################################################

1) Introduction
2) Bug
3) The Code
4) Fix

#######################################################################

===============
1) Introduction
===============

Cheese Tracker is a well known music tracker for the CT, IT, XM and S3M
file formats.

#######################################################################

======
2) Bug
======

The XM loader used by Cheese Tracker is affected by a buffer-overflow
vulnerability which happens when it tries to store the exceeding data
available in the input file in the junkbuster buffer of only 500 bytes.

From cheesetracker/loaders/loader_xm.cpp:

Loader::Error Loader_XM::load_instrument_internal(Instrument *p_instr,bool
p_xi,int p_cpos, int p_hsize, int p_sampnum) {
...
if (!p_xi) {

if ((reader.get_file_pos()-p_cpos)<p_hsize) {

Uint8 junkbuster[500];

//printf("extra junk XM instrument in header! hsize is %i, extra junk:
%in",p_hsize,(reader.get_file_pos()-p_cpos));

reader.get_byte_array((Uint8*)junkbuster,p_hsize-(reader.get_file_pos()-
p_cpos));
}
...

#######################################################################

===========
3) The Code
===========

http://aluigi.org/poc/cheesebof.zip

#######################################################################

======
4) Fix
======

No fix.
No reply from the developers.

#######################################################################

---
Luigi Auriemma
http://aluigi.org
http://mirror.aluigi.org




Arrow  Feedback :

If you have additional information or notice any errors regarding this security advisory, please use contact form or email us at info()securityreason()com.
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