Feature

Outlook flaw 'a risk to all users'

A bug in Microsoft Outlook Express could allow hackers to take control of a machine even when its user does not use the e-mail program.

Microsoft has issued a patch to stop hackers taking advantage of a flaw in the Outlook Express NNTP (Network News Transfer Protocol) newsreader program.

Microsoft said users who use Outlook Express as a newsgroup reader were most at risk. However, security supplier Symantec said all users with the Windows bundled e-mail client could be at risk because of Outlook's tight integration with the Internet Explorer web browser.

It was originally thought that users would first have to visit a rogue newsgroup server to fall victim to the bug. But Symantec said past exploits could also be used to gain control of a user's machine using NNTP, even when Outlook Express is not being used on the machine.

Windows 2000, Windows XP and Windows Server 2003 are affected by this threat, but users with the Windows XP Service Pack 2 are not.


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This was first published in July 2005

 

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