ZDI-07-073: Microsoft Internet Explorer setExpression Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-07-073.html December 11, 2007
-- CVE ID: CVE-2007-3902
-- Affected Vendor: Microsoft
-- Affected Products: Internet Explorer 5.01 SP4 Internet Explorer 6 Internet Explorer 7
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-- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Internet Explorer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.
The specific flaw exists in the CRecalcProperty function in mshtml.dll. When rendering HTML after calling the setExpression methods, followed by a modification of the outerHTML property of a programatically created element. The vulnerable code dereferences a previously freed memory location which can be leveraged to execute arbitrary code.
-- Vendor Response: Microsoft has issued an update to correct this vulnerability. More details can be found at:
-- Disclosure Timeline: 2007.07.20 - Vulnerability reported to vendor 2007.12.11 - Coordinated public release of advisory
-- Credit: This vulnerability was discovered by an anonymous researcher.
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