oss-sec mailing list archives
Re: Offset2lib: bypassing full ASLR on 64bit Linux
From: Paul Pluzhnikov <ppluzhnikov () gmail com>
Date: Fri, 5 Dec 2014 14:03:25 -0800
On Fri, Dec 5, 2014 at 1:07 PM, Hanno Böck <hanno () hboeck de> wrote:
On Fri, 05 Dec 2014 15:55:27 -0500 Daniel Micay <danielmicay () gmail com> wrote:The context of the architecture you're testing on is required for the numbers to be meaningful. It's known to be expensive on x86 and should be nearly free elsewhere if there aren't compiler / linker perf bugs.
FWIW, we've measured 1-2.5% degradation in our highly-optimized x86_64 binaries, and Sri's patch avoids most of it. Sri also tells me that H.J. Lu committed a patch for pie+copyrelocs to GNU-ld, and made the GCC copyreloc optimization (which has been committed) the default when linker support is available. -- Paul Pluzhnikov
Current thread:
- Re: Offset2lib: bypassing full ASLR on 64bit Linux, (continued)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Kees Cook (Dec 04)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Agostino Sarubbo (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Shawn (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Hanno Böck (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Florian Weimer (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Hanno Böck (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Daniel Micay (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Hanno Böck (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Daniel Micay (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Hanno Böck (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Paul Pluzhnikov (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Florian Weimer (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Reed Loden (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Daniel Kahn Gillmor (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Hanno Böck (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Hanno Böck (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Andy Lutomirski (Dec 05)
- Re: Re: Offset2lib: bypassing full ASLR on 64bit Linux Daniel Micay (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Seth Arnold (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Daniel Micay (Dec 05)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Hanno Böck (Dec 06)
- Re: Offset2lib: bypassing full ASLR on 64bit Linux Pavel Labushev (Dec 05)