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ZDI-12-200 : Microsoft Internet Explorer 9 CTreeNode Remote Code Execution
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-200
December 21, 2012

- -- CVE ID:
CVE-2012-2548

- -- CVSS:
7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P

- -- Affected Vendors:
Microsoft

- -- Affected Products:
Microsoft Internet Explorer 9


- -- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 12584.
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 CTreeNode
objects. By manipulating a document's elements an attacker can force a
dangling pointer to be reused after it has been freed. The issue lies in a
possible type confusion between a CTreeNode object and an ISpanQualifier
instance during the layout of a document being performed. An attacker can
leverage this vulnerability to execute code under the context of the
current process.

- -- Vendor Response:
Microsoft has issued an update to correct this vulnerability. More details
can be found at:
http://technet.microsoft.com/en-us/security/advisory/2757760


- -- Disclosure Timeline:
2012-07-24 - Vulnerability reported to vendor
2012-12-21 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:
* Stephen Fewer of Harmony Security (www.harmonysecurity.com)

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