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RE: Port scan causing system crashes
From: "Steve Goldsby (ICS)" <sgoldsby () networkarmor com>
Date: Thu, 12 Jun 2003 13:38:35 -0500

DGUX 2.x and below definitely die upon port scan, just like old versions
of solaris (syn flood vulnerability).

-----Original Message-----
From: Helmut Springer [mailto:delta () lug-s org] 
Sent: Thursday, June 12, 2003 11:31 AM
To: pen-test () securityfocus com
Cc: steve.x.jones () royalmail com
Subject: Re: Port scan causing system crashes


On 12 Jun 2003 at 13:23 +0200, steve.x.jones () royalmail com wrote:
Please can you help?  Has any-one else out there had issues with
NMAP port scans (or any other port scanner) causing systems to


I've done a quick Google search and found confirmation for one of
the systems - BUGTRAQ Vulnerability 3358, "IBM HACMP Port Scan
Denial of Service Vulnerability", the other was a bespoke app
running on some HP UX boxes.

  Document ID:  HPSBUX0306-264
  Date Loaded:  20030604
        Title:  SSRT3460 Network traffic can cause programs to fail
   A. Background
      Certain network traffic can cause programs to fail.  An
      example of potentially vulnerable program is diagmond.

Up til now I've been running port scans happily across our subnets
to look for rogue FTP, SMTP, HTTP etc, obviously I'll have to take
more care now...

One might say that you just find systems vulnerable to DoS attacks
this way, but in general scanning a pruduction environment always
carries a risk...

MfG/Best Regards,                  "If we keep our pride...
helmut springer                     Though paradise is lost
                                    We will pay the price,
                                    But we will not count the cost."



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