TippingPoint Zero Day Initiative

HP OpenView NNM netmon sel CGI Variable Remote Code Execution Vulnerability

ZDI-10-082: May 11th, 2010


CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 9271. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of HP Network Node Manager. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the Network Monitor (netmon.exe) daemon. This process can be started by invoking the webappmon.exe CGI application through the webserver. When the _OVParseLLA function defined within ov.dll is called from netmon.exe it directly copies the value of the 'sel' POST variable into a fixed-length stack buffer with a call to strcpy(). This can be leveraged by remote attackers to execute arbitrary code under the context of the webserver process.

Vendor Response

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

Disclosure Timeline

    2009-10-21 - Vulnerability reported to vendor
    2010-05-11 - Coordinated public release of advisory


This vulnerability was discovered by: