Re: How to make stack executable on demand?

From: Pavel Machek
Date: Thu Apr 22 2004 - 14:52:14 EST


> >is set with executable stack. Is there a third option that a process
> >starts with non-executable stack and can change the stack permission
> >later?
> >
> Well, in my opinion your request is equivalent to "keep all these
> cute buffer overflows forever". Take any protected app, LD_PRELOAD or
> drop in a bad/malicious library and your're done for good. Not really
> a good idea.

With malicious libraries, you have *way* bigger problems than
buffer overruns.
64 bytes from icmp_seq=28 ttl=51 time=448769.1 ms

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