Microsoft breaks Firefox

Posted on the October 20th, 2009 under Open Source by Administrator

vice president for engineering Mike Shaver is being polite about it, but basically pushed some software into last week that left users vulnerable to attack.

(Wise guys might confuse this Three Stooges bit with a recent security meeting.)

Presentation Foundation (which those with a sense of humor now call Thepresentation Foundation or WTF), along with .NET Framework 3.5 (which is now OK), were originally pushed as part of in February, and their problems within were fixed in May.

On Tuesday pushed a patch to fix the problem within Internet Explorer. So if you’re patching your browser your is safe. Let me repeat that. insists its MS09-054 patch made even users safe.

But if you’re not following directions then WTF you may now be vulnerable to exploit. So told it would “blocklist” both WTF and the .NET Framework, backing off on the latter after discussions with .

The WTF supports an XML-based user interface called XBAP, and lets its XAML applications run. But the was vulnerable to a “drive-by” exploit, in which your hitting a specific page would download malware.

I’m reading a lot of blog posts calling this deliberate, even malicious. I don’t think it is. I suspect is confusing its convenience with users’ security desires, rationalizing that this power lets it fix security holes automatically.

But its makes the potential source of great big security holes, which can leave it with egg on its collective face. The kindest thing one can say is that this is vaudeville comedy. Others will call it burlesque or, perhaps, a horror show.

What’s your view?


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