TippingPoint Zero Day Initiative

Microsoft DirectX SAMI File Format Name Parsing Stack Overflow Vulnerability

ZDI-08-040: June 10th, 2008


Affected Vendors

Affected Products

    Windows 2000 SP4

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 6152. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Windows. 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 in the parsing of SAMI files. When handling the properties of a "Class Name" variable a lack of bounds checking can result in a stack overflow. Successful exploitation can lead to remote code execution under the credentials of the 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
    2008-06-10 - Coordinated public release of advisory


This vulnerability was discovered by: