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TITLE:
WinAmp MIDI File Handling Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA20722

VERIFY ADVISORY:
http://secunia.com/advisories/20722/

CRITICAL:
Highly critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Winamp 5.x
http://secunia.com/product/3021/

DESCRIPTION:
BassReFLeX has discovered a vulnerability in WinAmp, which can be
exploited by malicious people to cause a DoS (Denial of Service) and
potentially compromise a user's system.

The vulnerability is cause due to a boundary error within the MIDI
plug-in (in_midi.dll) when handling MIDI files. This can be exploited
to cause a heap-based buffer overflow via a malicious ".mid" file with
a specially crafted header.

Successful exploitation crashes the application and may allow
execution of arbitrary code.

The vulnerability has been confirmed in version 5.23 and has also
been reported in version 5.21. Other versions may also be affected.

NOTE: The vulnerability may be related to one reported by Fortinet
Security Research Team.

SOLUTION:
Restrict use to trusted MIDI files only.

Use another program for opening MIDI files by default.

PROVIDED AND/OR DISCOVERED BY:
BassReFLeX

ORIGINAL ADVISORY:
http://www.milw0rm.com/exploits/1935

Fortinet:
http://www.fortinet.com/FortiGuardCenter/advisory/FG-2006-16.html

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
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Secunia NEVER sends attached files with advisories.
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use those supplied by the vendor.

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