TippingPoint Zero Day Initiative

Microsoft Office RTF Parsing Engine Memory Corruption Vulnerability

ZDI-08-023: May 13th, 2008


Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 6099. 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, open a malicious email, or open a malicious file.

The specific flaw exists when parsing malformed RTF documents. When processing a combination of RTF tags a heap overflow occurs. Successful exploitation can lead to remote compromise of a system under the credentials of the currently logged in user.

Vendor Response

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

Disclosure Timeline

    2008-01-21 - Vulnerability reported to vendor
    2008-05-13 - Coordinated public release of advisory


This vulnerability was discovered by:
    wushi of team509