From 4626cbaf78767fc8e9c86dd04785386c59ae0839 Mon Sep 17 00:00:00 2001 From: Damien Miller Date: Fri, 8 Jan 2016 14:24:56 +1100 Subject: Support Illumos/Solaris fine-grained privileges Includes a pre-auth privsep sandbox and several pledge() emulations. bz#2511, patch by Alex Wilson. ok dtucker@ --- platform-pledge.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 platform-pledge.c (limited to 'platform-pledge.c') diff --git a/platform-pledge.c b/platform-pledge.c new file mode 100644 index 000000000..4a6ec15e1 --- /dev/null +++ b/platform-pledge.c @@ -0,0 +1,71 @@ +/* + * Copyright (c) 2015 Joyent, Inc + * Author: Alex Wilson + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "includes.h" + +#include + +#include +#include + +#include "platform.h" + +#include "openbsd-compat/openbsd-compat.h" + +/* + * Drop any fine-grained privileges that are not needed for post-startup + * operation of ssh-agent + * + * Should be as close as possible to pledge("stdio cpath unix id proc exec", ...) + */ +void +platform_pledge_agent(void) +{ +#ifdef USE_SOLARIS_PRIVS + /* + * Note: Solaris priv dropping is closer to tame() than pledge(), but + * we will use what we have. + */ + solaris_drop_privs_root_pinfo_net(); +#endif +} + +/* + * Drop any fine-grained privileges that are not needed for post-startup + * operation of sftp-server + */ +void +platform_pledge_sftp_server(void) +{ +#ifdef USE_SOLARIS_PRIVS + solaris_drop_privs_pinfo_net_fork_exec(); +#endif +} + +/* + * Drop any fine-grained privileges that are not needed for the post-startup + * operation of the SSH client mux + * + * Should be as close as possible to pledge("stdio proc tty", ...) + */ +void +platform_pledge_mux(void) +{ +#ifdef USE_SOLARIS_PRIVS + solaris_drop_privs_root_pinfo_net_exec(); +#endif +} -- cgit v1.2.3