Advisory Details

December 9th, 2008

Microsoft Internet Explorer Webdav Request Parsing Heap Corruption Vulnerability

ZDI-08-087
ZDI-CAN-331

CVE ID CVE-2008-4259
CVSS SCORE
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Internet Explorer
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 6615. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows attackers to execute arbitrary code on vulnerable installations of Microsoft Internet Explorer 7 on the Microsoft Vista operating system. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.

The specific flaw exists during a WebDAV fetch of a document from a path containing a large number of characters. Mishandling of cached content results in a heap corruption which can be leveraged to execute arbitrary code under the context of the current instance of Internet Explorer.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/bulletin/MS08-073.mspx
DISCLOSURE TIMELINE
  • 2008-05-19 - Vulnerability reported to vendor
  • 2008-12-09 - Coordinated public release of advisory
CREDIT Brett Moore, Insomnia Security
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