WebApp Sec mailing list archives
RE: Reviewing security parameters
From: "Auri A. Rahimzadeh" <Auri () auri net>
Date: Fri, 16 Apr 2004 16:40:33 -0500
Do you guys think this script is safe?
Wow, that's a tough one. Since we're not looking at your code, I could only bring up a few items: 1) When can we see the code? :) 2) Who's coming up with the "random" number? Is it session ID? Is it your own randomizer? If the latter, what's the seed so that it isn't guessable? 3) What prevents people from DoSing you by sending corrupted session data for a particular user ID and disconnecting legitimate users from your system (you made it all-or-nothing)? 4) Watch out for the usual: sql injections, watching string lengths, validating data types, etc. etc. That Secure Coding 2 book from Microsoft has a lot of good stuff in it for all developers. 5) When can we see the code? :) Best, -Auri Rahimzadeh --- T.A.G. - We Are I.T.(tm) www.WeAreIT.biz : -----Original Message----- : From: Pitts, Christopher C. : [mailto:Christopher.Pitts () HaverstickConsulting com] : Sent: Friday, April 16, 2004 2:03 PM : To: Ilya Sher; Simon Lemieux : Cc: webappsec () securityfocus com : Subject: RE: Reviewing security parameters : : : : > Do you guys think this script is safe? : : To throw my hat in the ring. I think you really want to ask multiple : questions rather than the blanket question you have asked. You'll get a : much better result if you realize the different pieces to securing your : application. What you've given us is a partial design spec of your code. : You asked is this script safe. While I can give you a *partial* answer of : the *design* of the code based on what was presented, that won't really : answer your question. : : The questions I would ponder are... : : Is the design free of obvious design flaws? : : Is the development environment reasonable secure from tampering? : : Is the implementation of the design free from syntactical and security : flaws that would otherwise compromise a secure design? : : Is the deployment environment secure? : : : : : my .02c. I get asked this question just about everytime I walk into an : AppSec review for a client, and it takes a bit of work sometimes to get : them to realize that asking the question is a bit like asking if their : entire network is secure. : : : Christopher : : -- : Christopher C. Pitts : Sr. Consultant, Application Security : Haverstick Consulting, Inc : Carmel, Indiana
Current thread:
- Reviewing security parameters Simon Lemieux (Apr 16)
- Re: Reviewing security parameters Ilya Sher (Apr 16)
- RE: Reviewing security parameters V. Poddubniy (Apr 16)
- Re: Reviewing security parameters Jared (Apr 16)
- Re: Reviewing security parameters Matt Summers (Apr 16)
- Re: Reviewing security parameters Jared (Apr 16)
- Re: Reviewing security parameters exon (Apr 16)
- Follow-up: Reviewing security parameters Simon Lemieux (Apr 17)
- Message not available
- Re: Follow-up: Reviewing security parameters Simon Lemieux (Apr 21)
- Message not available
- <Possible follow-ups>
- RE: Reviewing security parameters Pitts, Christopher C. (Apr 16)
- RE: Reviewing security parameters Scovetta, Michael V (Apr 16)
- RE: Reviewing security parameters Auri A. Rahimzadeh (Apr 16)