This attack could pose a serious security threat. You should take immediate action to stop any damage or prevent further damage from happening.
This signature detects attempts to exploit a buffer overflow vulnerability in HP OpenView Network Node Manager application.
HP OpenView Network Node Manager (NNM) is a fault-management application for IP networks.
HP OpenView Network Node Manager (NNM) is prone to a remote buffer-overflow vulnerability. This issue affects the 'ovwebsnmpsrv.exe' process, which can be accessed remotely through the 'jovgraph.exe' CGI program. This issue is triggered when the application processes HTTP requests containing excessive data.
An attacker can exploit this issue to execute arbitrary code within the context of the affected application. Failed exploit attempts will result in a denial-of-service condition.
Vendor has issued an update to resolve this issue. Please visit the vendor's website for further details.