Advisory Details

June 14th, 2011

Microsoft Internet Explorer layout-grid-char style Remote Code Execution Vulnerability

ZDI-11-194
ZDI-CAN-1155

CVE ID CVE-2011-1260
CVSS SCORE 7.5, (AV:N/AC:L/Au:N/C:P/I:P/A:P)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Internet Explorer 9
Internet Explorer 8
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11272. 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 Internet Explorer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the way Internet Explorer handles unusual values for the layout-grid-char style property. Specific values may result in the destruction of a tree node that is still in use during the rendering of the HTML page. The resulting use-after-free vulnerability can be leveraged to achieve remote code execution.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/Bulletin/MS11-050.mspx
DISCLOSURE TIMELINE
  • 2011-04-04 - Vulnerability reported to vendor
  • 2011-06-14 - Coordinated public release of advisory
CREDIT Jose A. Vazquez of {http://spa-s3c.blogspot.com}
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