Re: OpenBSD ASLR and the stack

2016-03-22 Thread Ted Unangst
Shawn Webb wrote: > Does OpenBSD's ASLR implementation also randomize the top stack address? > Or is it simply a random gap (top of the stack still at the same > address, but application starts utilizing the stack at a random, but > properly aligned, offset)? The top of the stack, above the random

Re: OpenBSD ASLR and the stack

2016-03-22 Thread sven falempin
http://www.openbsd.org/papers/asiabsdcon2015-pie-slides.pdf page6 ? On Tue, Mar 22, 2016 at 8:36 PM, Shawn Webb wrote: > Random newbie-sounding question: > > Does OpenBSD's ASLR implementation also randomize the top stack address? > Or is it simply a random gap (top of the stack still at the sa

OpenBSD ASLR and the stack

2016-03-22 Thread Shawn Webb
Random newbie-sounding question: Does OpenBSD's ASLR implementation also randomize the top stack address? Or is it simply a random gap (top of the stack still at the same address, but application starts utilizing the stack at a random, but properly aligned, offset)? If it's just a random gap, wou