TippingPoint Zero Day Initiative
 

Oracle Outside In Excel File TxO Parsing Remote Code Execution Vulnerability

ZDI-12-151: August 22nd, 2012

CVSS Score

Affected Vendors

Affected Products

Vulnerability Details


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of products utilizing Oracle's Outside In Technology. User interaction is required to exploit this vulnerability in that the target must open a malicious file.

The specific flaw exists within the library's parsing of Excel files. When handling the TxO record, the vseshr.dll module can be made to wrap an integer value when parsing a specific field. This can lead to an improper memory allocation that can be leveraged to corrupt the heap leading to arbitrary code execution under the context of the user running the application.

Vendor Response

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

Disclosure Timeline

    2011-12-19 - Vulnerability reported to vendor
    2012-08-22 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    gwlabs.com