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Vulnerability Note VU#753044Microsoft Windows WebViewFolderIcon ActiveX integer overflowOverviewThe Microsoft Windows WebViewFolderIcon ActiveX control contains an integer overflow vulnerability. This may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.I. DescriptionThe Microsoft WebViewFolderIcon object is an ActiveX control that comes with Microsoft Windows. This control, which is provided by the file webvw.dll, provides support functionality for icons in the Windows Explorer Web view. The slice method of the WebViewFolderIcon control contains an integer overflow vulnerability.II. ImpactBy convincing a user to view a specially crafted HTML document (e.g., a web page or an HTML email message or attachment), an attacker may be able to execute arbitrary code with the privileges of the user. The attacker could also cause Internet Explorer (or the program using the WebBrowser control) to crash.The complete impact of this vulnerability is not yet known.III. SolutionApply an updateThis vulnerability is addressed in Microsoft Security Bulletin MS06-057.
{E5DF9D10-3B52-11D1-83E8-00A0C90DC849} Disable ActiveX Disabling ActiveX controls in the Internet Zone (or any zone used by an attacker) appears to prevent exploitation of this vulnerability. Instructions for disabling ActiveX in the Internet Zone can be found in the "Securing Your Web Browser" document and the Malicious Web Scripts FAQ. Systems Affected
Referenceshttp://www.us-cert.gov/cas/techalerts/TA06-270A.html This vulnerability was publicly disclosed by HD Moore. This document was written by Will Dormann.
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