ZDI-07-073: Microsoft Internet Explorer setExpression Vulnerability

2007-12-12T00:00:00
ID SECURITYVULNS:DOC:18618
Type securityvulns
Reporter Securityvulns
Modified 2007-12-12T00:00:00

Description

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

-- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID . For further product information on the TippingPoint IPS:

http://www.tippingpoint.com

-- 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:

http://www.microsoft.com/technet/security/bulletin/ms07-069.mspx

-- 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.

-- About the Zero Day Initiative (ZDI): Established by TippingPoint, The Zero Day Initiative (ZDI) represents a best-of-breed model for rewarding security researchers for responsibly disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research through the ZDI can find more information and sign-up at:

http://www.zerodayinitiative.com

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