Date: Sat, 1 Jul 2017 22:01:35 -0400 From: Shawn Webb <shawn.webb@hardenedbsd.org> To: freebsd-current@freebsd.org Cc: kib@freebsd.org Subject: Possible to set security.bsd.stack_guard_page to a negative value Message-ID: <20170702020135.3bc53sfdcflgzp7y@mutt-hbsd>
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[-- Attachment #1 --] Even though it'd be a stupid thing to do, the security.bsd.stack_guard_page sysctl node can be set to a negative integer value. This will cause all applications to crash with SIGABRT. -- Shawn Webb Cofounder and Security Engineer HardenedBSD GPG Key ID: 0x6A84658F52456EEE GPG Key Fingerprint: 2ABA B6BD EF6A F486 BE89 3D9E 6A84 658F 5245 6EEE [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEKrq2ve9q9Ia+iT2eaoRlj1JFbu4FAllYU/wACgkQaoRlj1JF bu64mxAAryQi1Pg59K7PxqOIzjSq/4OTz5N8KCsEyVp7gUndlcIj7gmMnNhsVW0P dHMOu4yRp166SHd+naqJoa55cSpZ8Iu3qyXU0KnwRaquBPvzsUaYeH14Jy4CAyBu EeuXXG+JHwDGTx6dQm6ls6joxnDEcJe58Kq4igSywlXpIJlRUSfTnUhOmZX+dzi9 V65Dyu98rANC2xGCsZuYFeqDIWui344PODL9MegwZIf1l6A8fCCaOHTmak+9zH6U 8Fw1e3l2No4rgUne60tBe4CS9oCpHS/pq96Kgxe5/Sk0+tq07YAkm9lEcaSoqkOI Sh8EDNo0bF7HCZYxuPGEwiBuhw7C8DEGVjshoU3BU3o6hcutzjzIkofZPyErkYV5 v713SHOPBpP1KJ1GMbHlob5GuUtkYxZyHPvBfotkDTtNqRYh50YGAt6fdelx7eat OiTYdFyeiS0WAo1ieBK59UYqQ3H1R6b6uqn+MXLMkPaYT8w7Z9cicL+fiiMDk0d3 jneurFZmW3HVq/t4wZOxfsG/IWEMYuOSfxHZ8oE1xaW3YgvPx07C3ibWcTUmI7qS w4x+1kHFwcYf0oOUTuUM+c2LftssUf6WAMShXi5NP1fP0J+lmnKvMsG4PYrGhIJI lLy72X6YEwmLa5nubTn69h7eEbsea9tzA2VJ4yH1D22/Hat4+IU= =q5YQ -----END PGP SIGNATURE-----help
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