The Windows Metafile (WMF) bug that caused users -- and Microsoft -- so much grief in December and January spread like it did because Russian hackers sold an exploit to anyone who had the cash, a security researcher said Friday.
The bug in Windows' rendering of WMF images was serious enough that Microsoft issued an out-of-cycle patch for the problem in early January, in part because scores of different exploits lurked on thousands of Web sites, including many compromised legitimate sites. At one point, Microsoft was even accused of purposefully creating the vulnerability as a "back door" into Windows.
News source: InformationWeek
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