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Zero Day Initiative Advisory 11-347

Zero Day Initiative Advisory 11-347
Posted Dec 14, 2011
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 11-347 - 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.

tags | advisory, remote, arbitrary, code execution
advisories | CVE-2011-1983
MD5 | b3d2abb21d613afdc7e909e2fc77422b

Zero Day Initiative Advisory 11-347

Change Mirror Download
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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)



- -- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

http://www.zerodayinitiative.com/advisories/disclosure_policy/

Follow the ZDI on Twitter:

http://twitter.com/thezdi
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