Messages in this thread | | | From | Steve VanDevender <> | Date | Thu, 30 Dec 1999 14:11:00 -0800 (PST) | Subject | Re: Unexecutable Stack / Buffer Overflow Exploits... |
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Richard Zidlicky writes: > On Wed, Dec 29, 1999 at 11:27:33AM -0800, Dan Hollis wrote: > > And I dont see any reason why this cant be a kernel compile option. If you > > dont like it, dont enable it. I suspect the vast majority of users will > > enable it though. I know I would. > > Why not even make it a runtime option, programs get nonexec stack by default > and could do some mmap or other syscall if they realy needed the stack or > some portion of it executable. > Are there any technical difficulties I am overlooking?
Yeah. Exploit code that now includes exec("/bin/sh") will simply precede it with make_stack_executable() if it's runtime-selectable.
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