MS07-034 is not categorized as virus, worm, Trojan or backdoor. It is a group of critical vulnerabilities in Outlook Express 6 on Windows 2003/XP computers and in Windows Mail on Windows Vista, which allows arbitrary code to be remotely executed in the vulnerable computer or information to be disclosed.
The addressed vulnerabilities are:
- URL Redirect Cross Domain vulnerability.
- Windows Mail UNC Navigation Request vulnerability.
- URL Parsing Cross Domain vulnerability.
- Content Disposition Parsing Cross Domain vulnerability.
If exploited successfully, MS07-034 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.
Additionally, it would allow hackers to read data from another security zone or domain in Internet Explorer.
These vulnerabilities are usually exploited by creating a specially crafted web page and enticing users into accessing it. The link to the website can be disributed using several methods, such as email, instant messaging programs, etc.
If you have any of the affected components installed on Windows Vista/2003/XP computer, it is recommended to download and apply the security patch for this vulnerability. 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.