ZDI-11-347 : Microsoft Office Word Hidden Border Remote Code Execution Vulnerability

[ZDI Disclosures <zdi-disclosures@xxxxxxxxxxxxxxxx>]

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ZDI-11-347 : Microsoft Office Word Hidden Border Remote Code Execution
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-11-347
December 13, 2011

- -- CVE ID:
CVE-2011-1983

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

- -- Affected Vendors:

Microsoft



- -- Affected Products:

Microsoft Office Word



- -- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Microsoft Office Word 2007/2010. 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 how the application handles a border
containing a specific property. When parsing this property, the
application will incorrectly free it. If the application attempts to
render the object, a use-after-free condition can be made to occur. This
can lead to code execution under the context of the application.

- -- Vendor Response:

Microsoft has issued an update to correct this vulnerability. More
details can be found at:

http://technet.microsoft.com/en-us/security/bulletin/MS11-089



- -- Disclosure Timeline:
2011-04-01 - Vulnerability reported to vendor
2011-12-13 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:

* Nikita Tarakanov (CISS Research Team) and Alexey Sintsov (Digital
Security Research Group)



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