Re: Buffer overflow?

[Hiten Pandya <hmp@xxxxxxxx>]

Jeroen Ruigrok/asmodai wrote:

> -On [20030801 08:02], Richard Coleman (richardcoleman@xxxxxxxxxxxxxx) wrote:
>
> > Have you given any thought to pulling in the changes that OpenBSD made 
> > to harden against buffer overflows (i.e. canary checking)?  They've 
> > added some pretty serious mechanisms to make it harder to exploit buffer 
> > overflows (and made it turned on by default).
>
>
> IIRC Hiten is busy working on getting the OpenBSD non-exec stack code
> working on DragonFly.

	I have sussed out the signal trampoline code and how it was
	changed for IRIX binary emulation in other (NeT|Open) BSDs.
	I am gonna be off to holiday from next week or so; once I get
	back, I will resume my efforts on the non-exec stack for DFly.

	FWIW, I have also had my eye on the binary checksumming code
	that was put in Open/NetBSD.

	Cheers.

--
Hiten Pandya
hmp@xxxxxxxx
http://hmp.serverninjas.com/