Thursday, July 30, 2009

Extra '&' in Microsoft development code gave hackers IE exploit

Company's security development expert confirms reports by outside researchers

By Gregg Keizer, ComputerWorld
Microsoft yesterday confirmed that a single superfluous character in its own development code is responsible for the bug that has let hackers exploit Internet Explorer (IE) since early July.

A pair of German researchers who analyzed a vulnerability in a Microsoft-made ActiveX control came to the same conclusion three weeks ago.

"The bug is simply a typo," Michael Howard, a principal security program manager in Microsoft's security engineering and communications group, said in a post Tuesday to the Security Development Lifecycle (SDL) blog. Howard, who is probably best known for co-authoring Writing Secure Code, went on to say that the typo -- an errant "&" character -- is the "core issue" in the MSVidCtl ActiveX control.

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~Sandy G.

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