Date: Sun, 28 Jun 1998 00:48:52 -0400 (EDT) From: Patrick McAndrew <pfm@slack.net> To: jtb <jtb@pubnix.org> Cc: Wojciech Sobczuk <sopel@hood.1lo.lublin.pl>, fpscha@schapachnik.com.ar, Niall Smart <njs3@doc.ic.ac.uk>, ncb05@uow.edu.au, security@FreeBSD.ORG Subject: Re: non-executable stack? Message-ID: <Pine.NEB.3.96.980628004722.10369A-100000@brooklyn.slack.net> In-Reply-To: <Pine.SOL.3.96.980627182039.9643A-100000@pubnix.org>
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On Sat, 27 Jun 1998, jtb wrote: > What do you mean, checking for this is very easy, just before something > gets executed, you take argv and envp and loop through them looking for > those certain ascii characters, it's like 10-15 lines of code, if that. I > don't see why you'd think that would be cumbersome to the kernel. I thought you were talking about userland programs. However, this could make it hardware dependant (as control codes can change between archs), and if this routine is called several hundred times a second (ona busy system), it could slow things down a bit. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe security" in the body of the message
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