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Port scan causing system crashes
From: steve.x.jones () royalmail com
Date: Thu, 12 Jun 2003 11:23:06 +0000


Please can you help?  Has any-one else out there had issues with NMAP port scans
(or any other port scanner) causing systems to crash?

I use Nessus to baseline the security of our systems and have twice had problems
caused by the NMAP port scan on clustered unix boxes running our enterprise
applications.  NOTE - it was the initial port scan that caused the problems, not
the subsequent vulnerability assessment.
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.

Does any-one know of other systems that fall over with a simple port scan?

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...

Thanks in advance for any help.


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