ZDI-12-093 : (Pwn2Own) Microsoft Internet Explorer Fixed Table Colspan Remote Code Execution Vulnerability

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ZDI-12-093 : (Pwn2Own) Microsoft Internet Explorer Fixed Table Colspan
Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-093
June 12, 2012

• – CVE ID:
  CVE-2012-1876

• – CVSS:
  9, AV:N/AC:L/Au:N/C:P/I:P/A:C

• – Affected Vendors:

Microsoft

• – Affected Products:

Microsoft Internet Explorer

• – TippingPoint(TM) IPS Customer Protection:
  TippingPoint IPS customers have been protected against this
  vulnerability by Digital Vaccine protection filter ID 12380.
  For further product information on the TippingPoint IPS, visit:

  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.

• – Vendor Response:

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:
  This vulnerability was discovered by:

• VUPEN Vulnerability Research Team http://www.vupen.com

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