Secunia Research: libmikmod Module Parsing Vulnerabilities

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                 Secunia Research 05/02/2010

        - libmikmod Module Parsing Vulnerabilities -

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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

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1) Affected Software

• libmikmod 3.1.12

NOTE: Other versions may also be affected.

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2) Severity

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

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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/

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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.

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5) Solution

Fixed in the CVS repository.

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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.

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7) Credits

Discovered by Dyon Balding, Secunia Research.

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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.

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9) About Secunia

Secunia offers vulnerability management solutions to corporate
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relevant to their specific system configuration:

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

Secunia also provides a publicly accessible and comprehensive advisory
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http://secunia.com/advisories/mailing_lists/

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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/

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