Date: Sat, 18 Aug 2001 19:03:40 -0700 From: Kris Kennaway <kris@obsecurity.org> To: audit@FreeBSD.org Subject: [art@cvs.openbsd.org: CVS: cvs.openbsd.org: src] Message-ID: <20010818190339.A76832@xor.obsecurity.org>
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--jRHKVT23PllUwdXP Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Anyone up for porting this? Kris ----- Forwarded message from Artur Grabowski <art@cvs.openbsd.org> ----- Delivered-To: kkenn@localhost.obsecurity.org Delivered-To: kris@freebsd.org Date: Fri, 17 Aug 2001 21:32:16 -0600 (MDT) From: Artur Grabowski <art@cvs.openbsd.org> To: source-changes@cvs.openbsd.org Subject: CVS: cvs.openbsd.org: src Precedence: bulk Reply-To: Artur Grabowski <art@cvs.openbsd.org> X-Loop: source-changes@openbsd.org X-UIDL: 2307983f1074b8429d691305aa7c6c5c CVSROOT: /cvs Module name: src Changes by: art@cvs.openbsd.org 2001/08/17 21:32:16 Modified files: sys/kern : kern_exec.c kern_sysctl.c=20 sys/sys : sysctl.h=20 lib/libc/gen : sysctl.3=20 sbin/sysctl : sysctl.8=20 Log message: Add a possibility to add a random offset to the stack on exec. This makes it slightly harder to write generic buffer overflows. This doesn't really give any real security, but it raises the bar for script-kiddies and it's really cheap. The range of the random offsets is controlled by the sysctl kern.stackgap_random (must be a power of 2). This is disabled by default right now, but we'll set it to a reasonable val= ue (1024?) soon, after some more testing. ----- End forwarded message ----- --jRHKVT23PllUwdXP Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (FreeBSD) Comment: For info see http://www.gnupg.org iD8DBQE7fx57Wry0BWjoQKURAjV+AKCMj3ML0yx2BWZLXb5dedermklLPgCg2aX2 zMIMPRMjPKQr/NwavqkOw1w= =JQ8h -----END PGP SIGNATURE----- --jRHKVT23PllUwdXP-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-audit" in the body of the message
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