[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: [Full-Disclosure] PFW and Program Correctness
- To: "'Glenn_Everhart@bankone.com'" <Glenn_Everhart@bankone.com>, "'clairmont@usa.net'" <clairmont@usa.net>
- Subject: RE: [Full-Disclosure] PFW and Program Correctness
- From: "Clairmont, Jan" <JMC13@mail3.cs.state.ny.us>
- Date: Fri, 16 Jan 2004 13:34:46 -0500
I agree combinatorial is probably a better factor of growth of possible
security errors.
Maybe an algorithm like Port Numbers Open factorial times the number of
applications on those ports factorial times number of code lines ! = number
of possible bugs-vulnerabilities.
Apps! * Ports! * Code Lines! = Possible Security Vulnerabilities or some
combinatorial proof a! * p! * c ! = s. Call it the the Clairmont-Everhart
Security Index of Vulnerability. The CSIV number, Nice point.
Factor in code lines too 8->, oh well so much for my dreams of being a
mathematician.
Anyone done this? I think there can ever be enough testing, and I think
if someone is dedicated enough an exploit can be found. I just think a
system becomes so hardened that the effort to exploit it or break it becomes
too onerous to do. Where as 1 billion monkeys pushing keys, someone is
going to stumble onto something, a key sequence timing error or other
weird combination of events that finds another bug or security hole.
Jan
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html