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COMMAND NNM SYSTEMS AFFECTED HP Openview Network Node Manager v6.1 (HP-UX 10.20, 11.00, Sun Solaris 2.X, Window NT4.X and Windows 2000) PROBLEM Delphis Consulting Internet Security Team (DCIST) discovered the following vulnerability in HP Openview Node Manager under Windows NT. By using the Alarm service which is shipped and installed by default with HP openview network node manager it is possible to cause a Buffer overrun in OVALARMSRV overwriting the EIP allowing the execution of arbitry code. This is done be connecting to post 2345 which the port resides on by default and sending a large string. The string has to be a length of 4064 + EIP (4 bytes) making a total of 4068 bytes. SOLUTION Currently there is no vendor patch available but the following are preventative measures Delphis Consulting Internet Security Team would advise users running this service to implement: o Access list port 2345 on the next hop router for only allowed hosts. Fixing the problem: For HP-UX release 10.20 install patch PHSS_22061 HP-UX release 11.00 install patch PHSS_22062. For Sun Solaris 2.X use PSOV_02767, Microsoft products use NNM_00581. Please note the dependencies for each.