ZDI-08-006: Microsoft Internet Explorer SVG animateMotion.by Code Execution Vulnerability

[zdi-disclosures@xxxxxxxx]

ZDI-08-006: Microsoft Internet Explorer SVG animateMotion.by Code 
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-08-006.html
February 12, 2008

-- CVE ID:
CVE-2008-077

-- Affected Vendor:
Microsoft

-- Affected Products:
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 5923. 
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 handling of the "by" property of an
animateMotion SVG element. By assigning other DOM elements to this
property, a memory corruption occurs during the destruction of a
Variant data type. The corruption causes an overwrite of a virtual
function address allowing for the execution of 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/MS08-010.mspx

-- Disclosure Timeline:
2007.09.17 - Vulnerability reported to vendor
2008.02.12 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by an anonymous researcher.

-- About the Zero Day Initiative (ZDI):
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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

The ZDI is unique in how the acquired vulnerability information is used.
3Com does not re-sell the vulnerability details or any exploit code.
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customers with zero day protection through its intrusion prevention
technology. Explicit details regarding the specifics of the
vulnerability are not exposed to any parties until an official vendor
patch is publicly available. Furthermore, with the altruistic aim of
helping to secure a broader user base, 3Com provides this vulnerability
information confidentially to security vendors (including competitors)
who have a vulnerability protection or mitigation product.


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