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HistoryJun 17, 2012 - 12:00 a.m.

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
June 12, 2012

  • – CVE ID:

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

  • – Affected Vendors:


  • – 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:

  • – 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:

  • – Disclosure Timeline:
    2012-03-14 - Vulnerability reported to vendor

2012-06-12 - Coordinated public release of advisory

  • – Credit:
    This vulnerability was discovered by:
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