TippingPoint Zero Day Initiative
 

(0day) Microsoft Office Excel Axis Properties Record Parsing Remote Code Execution Vulnerability

ZDI-11-042: February 7th, 2011

CVE ID

CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10819. For further product information on the TippingPoint IPS:

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 application's usage of a specific field used for incrementing an index used in an array. Due to the application failing to verify the usage of the index into the array, the application will copy the contents of the specified element into a statically sized buffer on the stack. This can lead to code execution under the context of the application.

Vendor Response

Microsoft states:

Patched April 12, 2011
http://www.microsoft.com/technet/security/bulletin/ms11-021.mspx


Disclosure Timeline

    2010-08-25 - Vulnerability reported to vendor
    2011-02-07 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Aniway (Aniway.Anyway AT gmail DOT com)
    Anonymous