Re: Sabotaged PaXtest (was: Re: Patch 4/6 randomize the stack pointer)

2005-02-03 Thread Peter Busser
On Wednesday 02 February 2005 23:08, [EMAIL PROTECTED] wrote: > > and how do you force a program to call that function and then to execute > > your shellcode? In other words: i challenge you to show a working > > (simulated) exploit on Fedora (on the latest fc4 devel version, etc.) > > that does th

Re: Sabotaged PaXtest (was: Re: Patch 4/6 randomize the stack pointer)

2005-02-02 Thread Peter Busser
Hi! > one thing that paxtest didn't get right in the 'kiddie' mode is that > it still ran with an executable stack, that was not the intention but > rather an oversight, it'll be fixed in the next release. still, this > shouldn't leave you with a warm and fuzzy feeling about the security > of intr

Re: Sabotaged PaXtest (was: Re: Patch 4/6 randomize the stack pointer)

2005-02-02 Thread Peter Busser
On Wednesday 02 February 2005 09:26, Theodore Ts'o wrote: > On Tue, Feb 01, 2005 at 07:15:49PM -0500, Theodore Ts'o wrote: > > Umm, so exactly how many applications use multithreading (or otherwise > > trigger the GLIBC mprotect call), > > For the record, I've been informed that the glibc mprotect(

Re: Sabotaged PaXtest (was: Re: Patch 4/6 randomize the stack pointer)

2005-02-02 Thread Peter Busser
Hi! > Umm, so exactly how many applications use multithreading (or otherwise > trigger the GLIBC mprotect call), and how many applications use nested > functions (which is not ANSI C compliant, and as a result, very rare)? > > Do the tests both ways, and document when the dummy() re-entrant > func

Re: Sabotaged PaXtest (was: Re: Patch 4/6 randomize the stack pointer)

2005-02-01 Thread Peter Busser
On Tuesday 01 February 2005 12:46, you wrote: > * Peter Busser <[EMAIL PROTECTED]> wrote: > > > ok the paxtest 0.9.5 I downloaded from a security site (not yours) had > > > this gem in: > > > > > > + do_mprotect((unsigned long)argv & ~

Re: Sabotaged PaXtest (was: Re: Patch 4/6 randomize the stack pointer)

2005-02-01 Thread Peter Busser
On Monday 31 January 2005 17:41, you wrote: > On Mon, 2005-01-31 at 13:57 +0100, Peter Busser wrote: > > Hi! > > > > > I'm not entirely happy yet (it shows a bug in mmap randomisation) but > > > it's way better than what you get in your tests (this is the

Sabotaged PaXtest (was: Re: Patch 4/6 randomize the stack pointer)

2005-01-31 Thread Peter Busser
Hi! > I'm not entirely happy yet (it shows a bug in mmap randomisation) but > it's way better than what you get in your tests (this is the > desabotaged > 0.9.6 version fwiw) As you may or may not know, I am the author of PaXtest. Please tell me what a ``desabotaged'' version of PaXtest exactly