ZDI-12-186 : Microsoft Office 2007 RTF Mismatch Remote Code Execution Vulnerability

[ZDI Disclosures <zdi-disclosures () tippingpoint com>]

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ZDI-12-186 : Microsoft Office 2007 RTF Mismatch Remote Code Execution
Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-12-186

November 15, 2012

- -- CVE ID:
CVE-2012-0183

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

- -- Affected Vendors:
Microsoft

- -- Affected Products:
Microsoft Office

- -- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 12309 .
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 Office. 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 handling of RTF files. The code
responsible for lexing control words from the input file does not properly
validate that all objects are properly defined. By removing terminating
values within an RTF file an attacker can cause the program to re-use a
freed object. Combined with basic memory layout control an attacker can
abuse this situation to achieve code execution under the context of the
user running 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/ms12-029

- -- Disclosure Timeline:
2011-11-29 - Vulnerability reported to vendor
2012-11-15 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:
* Anonymous

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