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Re: Vulnerabilities in some SCADA server softwares
J. Oquendo wrote:
At what point in time did you try contacting any of the vendors for
SCADA systems are infamous for being terribly insecure. (You can search
the internet for demonstration video of equipment catching fire because
of such bugs.) SCADA manufacturers seem to have a firewall mentality
that excuses them from needing to be secure.
I am not at all surprised to see these bugs, though I do cringe at how
embarrassing they are. Heaping some embarrassment on the vendors seems
The downside to doing it publicly: Just because SCADA systems
communicate with the public internet and so are directly or indirectly
vulnerable doesn't mean the people who run them *intended* to hook them
up to the internet nor are aware what wire got plugged in or thumbdrive
transferred that made the bridge. They probably think they are
invulnerable, I bet the Iranians thought so. The manufacturers might
release a bug fix and customers (who discovered they have some equipment
for which there is an upgrade), maybe won't think they need them.
Also, once I have my clothespin factory, or nuclear plant, up and
running smoothly, how attractive is it to start applying "upgrades"?
Should I validate them first on my testbed nuclear power plant? It is
hard to test a SCRAM adequately. And if my vendor is so incompetent as
to write so many security holes into the software in the first place,
how much faith should I have in a different programmer, maybe years
later, patching code s/he probably doesn't understand as well as the
first sloppy programmer did. And who gets this thankless task? The
senior programmer who is working on the new project that is already
behind schedule, or the new guy? Does the new guy fully understand the
build procedure to even make all the parts correctly? Do they even have
good source code control to be sure they know what sources the old (and
largely working version) was built from? Are the upgrade procedures
reliable and understood by the vendor and by the worker the customer
will send out on the factory floor with a CD-ROM in hand? (Will that
worker stick the CD-ROM in the right slot and reboot the right box?)
Would I install a stack of SCADA upgrades to *my* functioning factory?
Scary, scary stuff.
Security needs to be designed in, implemented carefully each step along
the way, and reviewed. Instead people with "security" in their job
title so often seem to think security is firewalls, buying anti-virus
support contracts, and requiring use of MS Outlook and Internet Explorer.
-kb, the Kent who will shut up now.