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Old 06-13-2007, 11:40 PM   #1
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Registered: Jan 2006
Location: Charleston, SC, USA
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secure programming

I'm working on an application that will need to be setuid root. As my first setuid-root project, I'm extremely nervous about security. I know that the most common attack on an executable is a buffer overrun, or letting them shove more into an array that fits.

My application is entirely non-interactive, the only user input coming from command line arguments. So my question is, does C and/or C++ set up argc and argv securely? Is it safe to assume that CLI args are not a threat? That is, is their creation not a threat, I realize I must still carefully validate their input.
Old 06-14-2007, 04:02 PM   #2
Registered: Aug 2005
Distribution: Debian, OpenBSD, PFsense
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You could compile it with Stack Smashing and Buffer overflow protection i guess, but i don't know how.
You should take a look at some of OpenBSD's projects, they are extremely good at coding securely.

Some links that might also be useful:


argv, cc++, secure

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