Title: Nullsoft Winamp 5.581 (wnaspi32.dll) DLL Hijacking Exploit
Advisory ID: ZSL-2010-4958
Type: Local/Remote
Impact: System Access
Risk: (4/5)
Release Date: 26.08.2010

Summary

Winamp is a media player for Windows-based PCs, written by Nullsoft, now a subsidiary of AOL. It is proprietary freeware/shareware, multi-format, extensible with plug-ins and skins, and is noted for its graphical sound visualization, playlist, and media library features.

Description

Winamp 5.581 suffers from a dll hijacking vulnerability that enables the attacker to execute arbitrary code on a local level. The vulnerable extensions are .669, .aac, .aiff, .amf, .au, .avr, .b4s, .caf and .cda thru wnaspi32.dll and dwmapi.dll libraries.

Vendor

Nullsoft - http://www.winamp.com

Affected Version

5.581 (x86)

Tested On

Microsoft Windows XP Professional SP3 (English)

Vendor Status

N/A

PoC

winamp_dll.c

Credits

Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>

References

[1] http://www.exploit-db.com/exploits/14789
[2] http://www.packetstormsecurity.org/filedesc/winamp_dll.txt.html
[3] http://securityreason.com/exploitalert/8771
[4] http://www.vupen.com/english/advisories/2010/2195
[5] http://www.corelan.be:8800/index.php/2010/08/25/dll-hijacking-kb-2269637-the-unofficial-list/
[6] http://www.exploit-db.com/dll-hijacking-vulnerable-applications/
[7] http://osvdb.org/show/osvdb/67532
[8] http://cve.mitre.org/cgi-bin/cvename.cgi?name=2010-3137
[9] http://www.securityfocus.com/bid/42747

Changelog

[26.08.2010] - Initial release
[27.08.2010] - Added reference [1], [2], [3], [4], [5] and [6]
[28.08.2010] - Added reference [7]
[31.08.2010] - Added reference [8]
[02.09.2010] - Added reference [9]

Contact

Zero Science Lab

Web: http://www.zeroscience.mk
e-mail: lab@zeroscience.mk