MS07-047 is not categorized as virus, worm, Trojan or backdoor. It is a group of critical vulnerabilities in different versions of Windows Media Player on Windows Vista/2003/XP/2000 computers, which allows arbitrary code to be remotely executed in the vulnerable computer.
The addressed vulnerabilities are:
- Windows Media Player Code Execution Vulnerability Parsing Skins.
- Windows Media Player Code Execution Vulnerability Decompressing Skins.
Skins are sets of scripts, art, media, and text files that can be combined to create a new appearance for Windows Media Player. Using skins, you can change not only the way Windows Media Player looks, but how it functions. Windows Media Player skin files are distributed in WMZ and WMD files.
If exploited successfully, MS07-047 allows hackers to gain remote control of the affected computer with the same privileges as the logged on user. If this user had administrator rights, the hacker could take complete control of the system: create, modify or delete files, install programs, create new user accounts, etc.
This vulnerability is usually exploited by creating a malicious content for Windows Media Player and hosting it in a web page, or by sending a WMZ or WMD file via email.
If you have any of the vulnerable versions of Windows Media Player, it is recommended to download and apply the security patch for this vulnerability. Click here to check which versions of Windows Media Player are vulnerable and to access the web page for downloading the patch.
Moreover, bear in mind that this bulletin replaces a previous one, called MS06-024.