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                                 Delphis Consulting Plc
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                               Security Team Advisories
                                    [06/06/2000]

      
                             securityteam@delphisplc.com
                  [http://www.delphisplc.com/thinking/whitepapers/]
        
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Adv     :       DST2K0012
Title   :       BufferOverrun in HP Openview Network Node Manager v6.1
Author  :       DCIST (securityteam@delphisplc.com)
O/S     :       Microsoft Windows NT v4.0 Workstation (SP6)
Product :       HP Openview Network Node Manager v6.1
Date    :       06/06/2000

I.    Description

II.   Solution

III.  Disclaimer


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I. Description
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Vendor URL: http://www.openview.hp.com/

Delphis Consulting Internet Security Team (DCIST) discovered the following
vulnerability in HP Openview Node Manager under Windows NT.

Severity: high

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.


II. Solution
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Vendor Status: Informed

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.

III. Disclaimer
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THE INFORMATION CONTAINED IN THIS ADVISORY IS BELIEVED TO BE ACCURATE AT
THE TIME OF PRINTING, BUT NO REPRESENTATION OR WARRANTY IS GIVEN, EXPRESS OR
IMPLIED, AS TO ITS ACCURACY OR COMPLETENESS.  NEITHER THE AUTHOR NOR THE
PUBLISHER ACCEPTS ANY LIABILITY WHATSOEVER FOR ANY DIRECT, INDIRECT OR
CONSEQUENTIAL LOSS OR DAMAGE ARISING IN ANY WAY FROM ANY USE OF, OR RELIANCE
PLACED ON, THIS INFORMATION FOR ANY PURPOSE.
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