MS05-014 is not categorized as virus, worm, Trojan or backdoor. It is a set of four vulnerabilities in Internet Explorer 5.01, 5.5 and 6 running on Windows 2003/XP/2000/Me/98 computers, whose aggregate severity is considered critical:
- Drag and drop vulnerability.
- URL decoding zone spoofing vulnerability.
- DHTML method heap memory corruption vulnerability.
- Channel Definition Format (CDF) cross domain vulnerability.
All of these four vulnerabilities, if exploited successfully, allow 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. However, user intervention is necessary in order to exploit them.
The most usual attack vector is the creation of a malicious web page, which users are enticed into accessing. An e-mail message in HTML format could also be used.
If you have any of the vulnerable programs installed on your computer, it is recommendable to download and apply the security patch for these vulnerabilities. Click here to access the web page for downloading the patch. However, provided that this is a cumulative patch, make sure that you download the latest security patch available.
Note: Due to the Support Lifecycle of Windows operating systems, the availability of this patch for some versions may be affected. For further information, please contact Microsoft.