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January 8, 2007 11:13 AM PST
Integer overflow in Microsoft Internet Explorer 6
There's a vulnerability within Microsoft Internet Explorer 6 while running on a fully patched Windows XP SP2 system that allows remote attackers to cause a denial of service (crash). This flaw is due to an integer overflow error in the Common Controls library "comctl32.dll" when processing a "WebViewFolderIcon" object with a specially crafted "setSlice()" method. Specifically, a 0x7fffffff argument to the setSlice method on a WebViewFolderIcon ActiveX object may lead to an invalid memory copy, which can be exploited by attackers. Successful execution, however, requires that the victim visit a specially crafted Web page.
Additional resources:
- Microsoft: Advisory 926043
- US-CERT Technical Alert: TA06-270A
- US-CERT Vulnerability Note: VU#753044
- BrowserFun: #18
As CNET's resident security expert, Robert Vamosi has been interviewed on the BBC, CNN, MSNBC, and other outlets to share his knowledge about the latest online threats and to offer advice on personal and corporate security. Listen to his podcast at securitybites.cnet.com or e-mail Robert with your questions and comments.
