#23591: Build Tor and Tor Browser with -mmitigate-rop ------------------------------+-------------------- Reporter: cypherpunks | Owner: (none) Type: enhancement | Status: new Priority: Low | Milestone: Component: Applications | Version: Severity: Normal | Keywords: Actual Points: | Parent ID: Points: | Reviewer: Sponsor: | ------------------------------+-------------------- GCC 6 has a new option, `-mmitigate-rop`, which modifies the generated code to make finding ROP gadgets a bit harder. This is ''not'' CFI and does not provide strong protections, but it's better than nothing and is easier to use than alternatives, given that it doesn't require modifying source code for compatibility or loading a new runtime.
>-mmitigate-rop > Try to avoid generating code sequences that contain unintended > return opcodes, to mitigate against certain forms of attack. At the > moment, this option is limited in what it can do and should not be > relied on to provide serious protection. I suppose someone should try compiling Tor with this and scan for ROP gadgets using popular ROP compilers on it. -- Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23591> Tor Bug Tracker & Wiki <https://trac.torproject.org/> The Tor Project: anonymity online
_______________________________________________ tor-bugs mailing list tor-bugs@lists.torproject.org https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-bugs