Advisory Details

June 12th, 2012

(Pwn2Own) Microsoft Internet Explorer Fixed Table Colspan Remote Code Execution Vulnerability

ZDI-12-093
ZDI-CAN-1547

CVE ID CVE-2012-1876
CVSS SCORE 9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)
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 12380. 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 or open a malicious file.

The specific flaw exists within the way Internet Explorer handles dynamically changed colspans on a column in a table with the table-layout:fixed style. If the colspan is increased after initial creation it will result in a heap overflow. This can lead to remote code execution under the context of the current program.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/bulletin/MS12-037.mspx
DISCLOSURE TIMELINE
  • 2012-03-14 - Vulnerability reported to vendor
  • 2012-06-12 - Coordinated public release of advisory
CREDIT VUPEN Vulnerability Research Team http://www.vupen.com
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