ZDI-09-048: Microsoft Internet Explorer CSS Behavior Memory Corruption Vulnerability

ZDI-09-048: Microsoft Internet Explorer CSS Behavior Memory Corruption
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-09-048
August 5, 2009

– CVE ID:
CVE-2009-1919

– Affected Vendors:
Microsoft

– Affected Products:
Microsoft Internet Explorer

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vulnerability by Digital Vaccine protection filter ID 8359, 8361.
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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 when accessing embedded style sheets within an
HTML file. When modifying the properties of rules defined in the style
the behavior element is improperly processed resulting in a memory
corruption which can be further leveraged to execute arbitrary code
under the context of the current user.

– Vendor Response:
Microsoft has issued an update to correct this vulnerability. More
details can be found at:

http://www.microsoft.com/technet/security/Bulletin/MS09-034.mspx

– Disclosure Timeline:
2009-04-28 - Vulnerability reported to vendor
2009-08-05 - Coordinated public release of advisory

– Credit:
This vulnerability was discovered by:
* Peter Vreugdenhil

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