TippingPoint Zero Day Initiative

HP Managed Printing Administration MPAUploader.dll Remote Code Execution Vulnerability

ZDI-11-353: December 22nd, 2011


CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11697. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of HP Managed Printing Administration. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the MPAUploader.dll file. An extended length string can be passed into scripts within the management website on port 80 (the 'uploadfile' multipart form data 'filename' parameter in Default.asp) and ultimately to MPAUploader.dll. As a static stack allocation is used to store the buffer and the string length is not handled properly, a remote attacker may overwrite the stack and ultimately execute remote code.

Vendor Response

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

Disclosure Timeline

    2011-04-01 - Vulnerability reported to vendor
    2011-12-22 - Coordinated public release of advisory


This vulnerability was discovered by:
    Andrea Micalizzi aka rgod