Never seen checksec. Cool. As it turns out, Fedora seems to do a good job at compiling (all? not sure) their suid executables with -pie.
On Mon, Jan 23, 2012 at 04:53, Jeffrey Walton <[email protected]> wrote: > Good point about [lack of] compiler and linker hardening on the `su` > binary (and probably many others). Perhaps distributions should run > Checksec (http://www.trapkit.de/tools/checksec.html) on their > binaries. > > On Sun, Jan 22, 2012 at 6:25 PM, Jason A. Donenfeld <[email protected]> wrote: >> Server presently DoS'd, or dreamhost is tweaking again. >> >> Cache link: >> >> http://webcache.googleusercontent.com/search?hl=en&safe=off&biw=1009&bih=687&sclient=psy-ab&q=cache%3Ahttp%3A%2F%2Fblog.zx2c4.com%2F749&pbx=1&oq=cache%3Ahttp%3A%2F%2Fblog.zx2c4.com%2F749&aq=f&aqi=g4&aql=&gs_sm=e&gs_upl=1077l2167l0l2282l7l4l0l0l0l0l148l403l2.2l4l0 >> >> On Sun, Jan 22, 2012 at 19:19, Jason A. Donenfeld <[email protected]> wrote: >>> >>> Hey Everyone, >>> >>> I did a detailed write-up on exploiting CVE-2012-0056 that some of >>> y'all might appreciate. Pretty fun bug to play with -- dup2ing all >>> over the place for the prize of getting to write arbitrary process >>> memory into su :-). >>> >>> The write up is available on my blog here: http://blog.zx2c4.com/749 . >>> Enjoy. >>> >>> Jason _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
