====================================================================== 

                     Secunia Research 05/02/2010

            - libmikmod Module Parsing Vulnerabilities -

====================================================================== 
Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

====================================================================== 
1) Affected Software 

* libmikmod 3.1.12

NOTE: Other versions may also be affected.

====================================================================== 
2) Severity 

Rating: Highly critical
Impact: System access
Where:  From remote

====================================================================== 
3) Vendor's Description of Software 

"Mikmod is a module player and library supporting many formats,
including mod, s3m, it, and xm.".

Product Link:
http://sourceforge.net/projects/mikmod/ 

====================================================================== 
4) Description of Vulnerability

Secunia Research has discovered some vulnerabilities in libmikmod,
which can be exploited by malicious people to potentially compromise a
user's system.

1) Three boundary errors in the Impulse Tracker parser when parsing 
an instrument containing a column, panning, or pitch envelope with 
more than ENVPOINTS (32) points can result in a heap-based buffer 
overflow.

2) A boundary error in the Ultratracker parser when parsing a file 
with more than UF_MAXCHAN (64) channels can result in a heap-based 
buffer overflow.

Successful exploitation may allow arbitrary code execution in the
context of the process using the libmikmod library when opening a
specially crafted module file.

====================================================================== 
5) Solution 

Fixed in the CVS repository.

====================================================================== 
6) Time Table 

29/12/2009 - Vendor notified.
03/02/2010 - Vendor notified (2nd attempt).
03/02/2010 - Vendor responds that vulnerabilities are fixed in CVS.
05/02/2010 - Public disclosure.

====================================================================== 
7) Credits 

Discovered by Dyon Balding, Secunia Research.

====================================================================== 
8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2009-3995 for the Impulse Tracker vulnerabilities and 
CVE-2009-3996 for the Ultratracker vulnerability.

====================================================================== 
9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
relevant to their specific system configuration:

http://secunia.com/advisories/business_solutions/ 

Secunia also provides a publicly accessible and comprehensive advisory
database as a service to the security community and private 
individuals, who are interested in or concerned about IT-security.

http://secunia.com/advisories/ 

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the 
security and reliability of software in general:

http://secunia.com/secunia_research/ 

Secunia regularly hires new skilled team members. Check the URL below
to see currently vacant positions:

http://secunia.com/corporate/jobs/ 

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/advisories/mailing_lists/ 

====================================================================== 
10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2009-55/ 

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/ 

=====================================================================