Introduce support for Mandatory Access Control and extensible
kernel access control. Provide implementations of some sample operating system security policy extensions. These are not yet hooked up to the build as other infrastructure is still being committed. Most of these work fairly well and are in daily use in our development and (limited) production environments. Some are not yet in their final form, and a number of the labeled policies waste a lot of kernel memory and will be fixed over the next month or so to be more conservative. They do give good examples of the flexibility of the MAC framework for implementing a variety of security policies. mac_biba: Implementation of fixed-label Biba integrity policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned integrity levels, and information flow is controlled based on a read-up, write-down policy. Currently, purely hierarchal. mac_bsdextended: Implementation of a "file system firewall", which allows the administrator to specify a series of rules limiting access by users and groups to objects owned by other users and groups. This policy is unlabeled, relying on existing system security labeling (file permissions/ownership, process credentials). mac_ifoff: Secure interface silencing. Special-purpose module to limit inappropriate out-going network traffic for silent monitoring scenarios. Prevents the various network stacks from generating any output despite an interface being live for reception. mac_mls: Implementation of fixed-label Multi-Level Security confidentiality policy, similar to those found in a number of commercial trusted operating systems. All subjects and objects are assigned confidentiality levels, and information flow is controlled based on a write-up, read-down policy. Currently, purely hiearchal, although non-hierarchal support is in the works. mac_none: Policy module implementing all MAC policy entry points with empty stubs. A good place to start if you want all the prototypes types in for you, and don't mind a bit of pruning. Can be loaded, but has no access control impact. Useful also for performance measurements. mac_seeotheruids: Policy module implementing a security service similar to security.bsd.seeotheruids, only a slightly more detailed policy involving exceptions for members of specific groups, etc. This policy is unlabeled, relying on existing system security labeling (process credentials). mac_test: Policy module implementing basic sanity tests for label handling. Attempts to ensure that labels are not freed multiple times, etc, etc. Obtained from: TrustedBSD Project Sponsored by: DARPA, NAI Labs
This commit is contained in:
Robert Watson
parent
4ed84624a2
commit
d8a7b7a3cd
2226
sys/security/mac_biba/mac_biba.c
Normal file
2226
sys/security/mac_biba/mac_biba.c
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File diff suppressed because it is too large
Load Diff
61
sys/security/mac_biba/mac_biba.h
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61
sys/security/mac_biba/mac_biba.h
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@ -0,0 +1,61 @@
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/*-
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* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
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* Copyright (c) 2001, 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed by Robert Watson for the TrustedBSD Project.
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*
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* This software was developed for the FreeBSD Project in part by NAI Labs,
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* the Security Research Division of Network Associates, Inc. under
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* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
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* CHATS research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
|
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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* 3. The names of the authors may not be used to endorse or promote
|
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Definitions for the TrustedBSD Biba integrity policy module.
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*/
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#ifndef _SYS_SECURITY_MAC_BIBA_H
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#define _SYS_SECURITY_MAC_BIBA_H
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#define MAC_BIBA_EXTATTR_NAMESPACE EXTATTR_NAMESPACE_SYSTEM
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#define MAC_BIBA_EXTATTR_NAME "mac_biba"
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#define MAC_BIBA_FLAG_SINGLE 0x00000001 /* mb_single initialized */
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#define MAC_BIBA_FLAG_RANGE 0x00000002 /* mb_range* initialized */
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#define MAC_BIBA_FLAGS_BOTH (MAC_BIBA_FLAG_SINGLE | MAC_BIBA_FLAG_RANGE)
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#define MAC_BIBA_TYPE_UNDEF 0 /* Undefined */
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#define MAC_BIBA_TYPE_GRADE 1 /* Hierarchal grade with mb_grade. */
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#define MAC_BIBA_TYPE_LOW 2 /* Dominated by any
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* MAC_BIBA_TYPE_LABEL. */
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#define MAC_BIBA_TYPE_HIGH 3 /* Dominates any
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* MAC_BIBA_TYPE_LABEL. */
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#define MAC_BIBA_TYPE_EQUAL 4 /* Equivilent to any
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* MAC_BIBA_TYPE_LABEL. */
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#endif /* !_SYS_SECURITY_MAC_BIBA_H */
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749
sys/security/mac_bsdextended/mac_bsdextended.c
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749
sys/security/mac_bsdextended/mac_bsdextended.c
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@ -0,0 +1,749 @@
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/*-
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* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
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* Copyright (c) 2001, 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed by Robert Watson for the TrustedBSD Project.
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*
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* This software was developed for the FreeBSD Project in part by NAI Labs,
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* the Security Research Division of Network Associates, Inc. under
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* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
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* CHATS research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
|
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* are met:
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* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
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* 2. Redistributions in binary form must reproduce the above copyright
|
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* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
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* 3. The names of the authors may not be used to endorse or promote
|
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Developed by the TrustedBSD Project.
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* "BSD Extended" MAC policy, allowing the administrator to impose
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* mandatory rules regarding users and some system objects.
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*
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* XXX: Much locking support required here.
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/acl.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/mac.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/sysproto.h>
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#include <sys/sysent.h>
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#include <sys/vnode.h>
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#include <sys/file.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/sysctl.h>
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#include <net/bpfdesc.h>
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#include <net/if.h>
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#include <net/if_types.h>
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#include <net/if_var.h>
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#include <vm/vm.h>
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#include <sys/mac_policy.h>
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#include <security/mac_bsdextended/mac_bsdextended.h>
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SYSCTL_DECL(_security_mac);
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SYSCTL_NODE(_security_mac, OID_AUTO, bsdextended, CTLFLAG_RW, 0,
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"TrustedBSD extended BSD MAC policy controls");
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static int mac_bsdextended_enabled = 1;
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SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, enabled, CTLFLAG_RW,
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&mac_bsdextended_enabled, 0, "Enforce extended BSD policy");
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TUNABLE_INT("security.mac.bsdextended.enabled", &mac_bsdextended_enabled);
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MALLOC_DEFINE(M_MACBSDEXTENDED, "mac_bsdextended", "BSD Extended MAC rule");
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#define MAC_BSDEXTENDED_MAXRULES 250
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static struct mac_bsdextended_rule *rules[MAC_BSDEXTENDED_MAXRULES];
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static int rule_count = 0;
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static int rule_slots = 0;
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SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_count, CTLFLAG_RD,
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&rule_count, 0, "Number of defined rules\n");
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SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_slots, CTLFLAG_RD,
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&rule_slots, 0, "Number of used rule slots\n");
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static int mac_bsdextended_debugging;
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SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, debugging, CTLFLAG_RW,
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&mac_bsdextended_debugging, 0, "Enable debugging on failure");
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static int
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mac_bsdextended_rule_valid(struct mac_bsdextended_rule *rule)
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{
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if ((rule->mbr_subject.mbi_flags | MBI_BITS) != MBI_BITS)
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return (EINVAL);
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if ((rule->mbr_object.mbi_flags | MBI_BITS) != MBI_BITS)
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return (EINVAL);
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if ((rule->mbr_mode | VALLPERM) != VALLPERM)
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return (EINVAL);
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return (0);
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}
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static int
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sysctl_rule(SYSCTL_HANDLER_ARGS)
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{
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struct mac_bsdextended_rule temprule, *ruleptr;
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u_int namelen;
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int error, index, *name;
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name = (int *)arg1;
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namelen = arg2;
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/* printf("bsdextended sysctl handler (namelen %d)\n", namelen); */
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if (namelen != 1)
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return (EINVAL);
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index = name[0];
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if (index < 0 || index > rule_slots + 1)
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return (ENOENT);
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if (rule_slots >= MAC_BSDEXTENDED_MAXRULES)
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return (ENOENT);
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if (req->oldptr) {
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if (rules[index] == NULL)
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return (ENOENT);
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error = SYSCTL_OUT(req, rules[index], sizeof(*rules[index]));
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if (error)
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return (error);
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}
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if (req->newptr) {
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if (req->newlen == 0) {
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/* printf("deletion\n"); */
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ruleptr = rules[index];
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if (ruleptr == NULL)
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return (ENOENT);
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rule_count--;
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rules[index] = NULL;
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FREE(ruleptr, M_MACBSDEXTENDED);
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return(0);
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}
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error = SYSCTL_IN(req, &temprule, sizeof(temprule));
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if (error)
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return (error);
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error = mac_bsdextended_rule_valid(&temprule);
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if (error)
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return (error);
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if (rules[index] == NULL) {
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/* printf("addition\n"); */
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MALLOC(ruleptr, struct mac_bsdextended_rule *,
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sizeof(*ruleptr), M_MACBSDEXTENDED, M_WAITOK |
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M_ZERO);
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*ruleptr = temprule;
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rules[index] = ruleptr;
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if (index+1 > rule_slots)
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rule_slots = index+1;
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rule_count++;
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} else {
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/* printf("replacement\n"); */
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*rules[index] = temprule;
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}
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}
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return (0);
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}
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SYSCTL_NODE(_security_mac_bsdextended, OID_AUTO, rules,
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CTLFLAG_RW, sysctl_rule, "BSD extended MAC rules");
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static void
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mac_bsdextended_init(struct mac_policy_conf *mpc)
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{
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/* Initialize ruleset lock. */
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/* Register dynamic sysctl's for rules. */
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}
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static void
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mac_bsdextended_destroy(struct mac_policy_conf *mpc)
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{
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/* Tear down sysctls. */
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/* Destroy ruleset lock. */
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}
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static int
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mac_bsdextended_rulecheck(struct mac_bsdextended_rule *rule,
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struct ucred *cred, uid_t object_uid, gid_t object_gid, mode_t acc_mode)
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{
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int match;
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/*
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* Is there a subject match?
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*/
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if (rule->mbr_subject.mbi_flags & MBI_UID_DEFINED) {
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match = (rule->mbr_subject.mbi_uid == cred->cr_uid ||
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rule->mbr_subject.mbi_uid == cred->cr_ruid ||
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rule->mbr_subject.mbi_uid == cred->cr_svuid);
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if (rule->mbr_subject.mbi_flags & MBI_NEGATED)
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match = !match;
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if (!match)
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return (0);
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}
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if (rule->mbr_subject.mbi_flags & MBI_GID_DEFINED) {
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match = (groupmember(rule->mbr_subject.mbi_gid, cred) ||
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rule->mbr_subject.mbi_gid == cred->cr_rgid ||
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rule->mbr_subject.mbi_gid == cred->cr_svgid);
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if (rule->mbr_subject.mbi_flags & MBI_NEGATED)
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match = !match;
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if (!match)
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return (0);
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}
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/*
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* Is there an object match?
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*/
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if (rule->mbr_object.mbi_flags & MBI_UID_DEFINED) {
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match = (rule->mbr_object.mbi_uid == object_uid);
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if (rule->mbr_object.mbi_flags & MBI_NEGATED)
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match = !match;
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if (!match)
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return (0);
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}
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if (rule->mbr_object.mbi_flags & MBI_GID_DEFINED) {
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match = (rule->mbr_object.mbi_gid == object_gid);
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if (rule->mbr_object.mbi_flags & MBI_NEGATED)
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match = !match;
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if (!match)
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return (0);
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}
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/*
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* Is the access permitted?
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*/
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if ((rule->mbr_mode & acc_mode) != acc_mode) {
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if (mac_bsdextended_debugging)
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printf("mac_bsdextended: %d:%d request %d on %d:%d"
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" fails\n", cred->cr_ruid, cred->cr_rgid,
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acc_mode, object_uid, object_gid);
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return (EACCES);
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}
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return (0);
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}
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static int
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mac_bsdextended_check(struct ucred *cred, uid_t object_uid, gid_t object_gid,
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mode_t acc_mode)
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{
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int error, i;
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for (i = 0; i < rule_slots; i++) {
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if (rules[i] == NULL)
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continue;
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error = mac_bsdextended_rulecheck(rules[i], cred, object_uid,
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object_gid, acc_mode);
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if (error)
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return (error);
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}
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return (0);
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}
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static int
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mac_bsdextended_check_vnode_access(struct ucred *cred, struct vnode *vp,
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struct label *label, mode_t flags)
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{
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struct vattr vap;
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int error;
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|
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if (!mac_bsdextended_enabled)
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return (0);
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error = VOP_GETATTR(vp, &vap, cred, curthread);
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if (error)
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return (error);
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return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, flags));
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}
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static int
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mac_bsdextended_check_vnode_chdir(struct ucred *cred, struct vnode *dvp,
|
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struct label *dlabel)
|
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{
|
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struct vattr vap;
|
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int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
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return (0);
|
||||
|
||||
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VEXEC));
|
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}
|
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|
||||
static int
|
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mac_bsdextended_check_vnode_chroot(struct ucred *cred, struct vnode *dvp,
|
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struct label *dlabel)
|
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{
|
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struct vattr vap;
|
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int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VEXEC));
|
||||
}
|
||||
|
||||
static int
|
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mac_bsdextended_check_create_vnode(struct ucred *cred, struct vnode *dvp,
|
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struct label *dlabel, struct componentname *cnp, struct vattr *vap)
|
||||
{
|
||||
struct vattr dvap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(dvp, &dvap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, dvap.va_uid, dvap.va_gid, VWRITE));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_delete(struct ucred *cred, struct vnode *dvp,
|
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struct label *dlabel, struct vnode *vp, struct label *label,
|
||||
struct componentname *cnp)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp,
|
||||
struct label *label, acl_type_t type)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_exec(struct ucred *cred, struct vnode *vp,
|
||||
struct label *label)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid,
|
||||
VREAD|VEXEC));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_getacl(struct ucred *cred, struct vnode *vp,
|
||||
struct label *label, acl_type_t type)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VSTAT));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_getextattr(struct ucred *cred, struct vnode *vp,
|
||||
struct label *label, int attrnamespace, const char *name, struct uio *uio)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VREAD));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_lookup(struct ucred *cred, struct vnode *dvp,
|
||||
struct label *dlabel, struct componentname *cnp)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VEXEC));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_open(struct ucred *cred, struct vnode *vp,
|
||||
struct label *filelabel, mode_t acc_mode)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, acc_mode));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_readdir(struct ucred *cred, struct vnode *dvp,
|
||||
struct label *dlabel)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VREAD));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_readdlink(struct ucred *cred, struct vnode *vp,
|
||||
struct label *label)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VREAD));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp,
|
||||
struct label *dlabel, struct vnode *vp, struct label *label,
|
||||
struct componentname *cnp)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
|
||||
if (error)
|
||||
return (error);
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
|
||||
|
||||
return (error);
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp,
|
||||
struct label *dlabel, struct vnode *vp, struct label *label, int samedir,
|
||||
struct componentname *cnp)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(dvp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
|
||||
if (error)
|
||||
return (error);
|
||||
|
||||
if (vp != NULL) {
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid,
|
||||
VWRITE);
|
||||
}
|
||||
|
||||
return (error);
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_revoke(struct ucred *cred, struct vnode *vp,
|
||||
struct label *label)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_setacl_vnode(struct ucred *cred, struct vnode *vp,
|
||||
struct label *label, acl_type_t type, struct acl *acl)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_setextattr(struct ucred *cred, struct vnode *vp,
|
||||
struct label *label, int attrnamespace, const char *name, struct uio *uio)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_setflags(struct ucred *cred, struct vnode *vp,
|
||||
struct label *label, u_long flags)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_setmode(struct ucred *cred, struct vnode *vp,
|
||||
struct label *label, mode_t mode)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_setowner(struct ucred *cred, struct vnode *vp,
|
||||
struct label *label, uid_t uid, gid_t gid)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_setutimes(struct ucred *cred, struct vnode *vp,
|
||||
struct label *label, struct timespec atime, struct timespec utime)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_bsdextended_check_vnode_stat(struct ucred *cred, struct vnode *vp,
|
||||
struct label *label)
|
||||
{
|
||||
struct vattr vap;
|
||||
int error;
|
||||
|
||||
if (!mac_bsdextended_enabled)
|
||||
return (0);
|
||||
|
||||
error = VOP_GETATTR(vp, &vap, cred, curthread);
|
||||
if (error)
|
||||
return (error);
|
||||
return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VSTAT));
|
||||
}
|
||||
|
||||
static struct mac_policy_op_entry mac_bsdextended_ops[] =
|
||||
{
|
||||
{ MAC_DESTROY,
|
||||
(macop_t)mac_bsdextended_destroy },
|
||||
{ MAC_INIT,
|
||||
(macop_t)mac_bsdextended_init },
|
||||
{ MAC_CHECK_VNODE_ACCESS,
|
||||
(macop_t)mac_bsdextended_check_vnode_access },
|
||||
{ MAC_CHECK_VNODE_CHDIR,
|
||||
(macop_t)mac_bsdextended_check_vnode_chdir },
|
||||
{ MAC_CHECK_VNODE_CHROOT,
|
||||
(macop_t)mac_bsdextended_check_vnode_chroot },
|
||||
{ MAC_CHECK_VNODE_CREATE,
|
||||
(macop_t)mac_bsdextended_check_create_vnode },
|
||||
{ MAC_CHECK_VNODE_DELETE,
|
||||
(macop_t)mac_bsdextended_check_vnode_delete },
|
||||
{ MAC_CHECK_VNODE_DELETEACL,
|
||||
(macop_t)mac_bsdextended_check_vnode_deleteacl },
|
||||
{ MAC_CHECK_VNODE_EXEC,
|
||||
(macop_t)mac_bsdextended_check_vnode_exec },
|
||||
{ MAC_CHECK_VNODE_GETACL,
|
||||
(macop_t)mac_bsdextended_check_vnode_getacl },
|
||||
{ MAC_CHECK_VNODE_GETEXTATTR,
|
||||
(macop_t)mac_bsdextended_check_vnode_getextattr },
|
||||
{ MAC_CHECK_VNODE_LOOKUP,
|
||||
(macop_t)mac_bsdextended_check_vnode_lookup },
|
||||
{ MAC_CHECK_VNODE_OPEN,
|
||||
(macop_t)mac_bsdextended_check_vnode_open },
|
||||
{ MAC_CHECK_VNODE_READDIR,
|
||||
(macop_t)mac_bsdextended_check_vnode_readdir },
|
||||
{ MAC_CHECK_VNODE_READLINK,
|
||||
(macop_t)mac_bsdextended_check_vnode_readdlink },
|
||||
{ MAC_CHECK_VNODE_RENAME_FROM,
|
||||
(macop_t)mac_bsdextended_check_vnode_rename_from },
|
||||
{ MAC_CHECK_VNODE_RENAME_TO,
|
||||
(macop_t)mac_bsdextended_check_vnode_rename_to },
|
||||
{ MAC_CHECK_VNODE_REVOKE,
|
||||
(macop_t)mac_bsdextended_check_vnode_revoke },
|
||||
{ MAC_CHECK_VNODE_SETACL,
|
||||
(macop_t)mac_bsdextended_check_setacl_vnode },
|
||||
{ MAC_CHECK_VNODE_SETEXTATTR,
|
||||
(macop_t)mac_bsdextended_check_vnode_setextattr },
|
||||
{ MAC_CHECK_VNODE_SETFLAGS,
|
||||
(macop_t)mac_bsdextended_check_vnode_setflags },
|
||||
{ MAC_CHECK_VNODE_SETMODE,
|
||||
(macop_t)mac_bsdextended_check_vnode_setmode },
|
||||
{ MAC_CHECK_VNODE_SETOWNER,
|
||||
(macop_t)mac_bsdextended_check_vnode_setowner },
|
||||
{ MAC_CHECK_VNODE_SETUTIMES,
|
||||
(macop_t)mac_bsdextended_check_vnode_setutimes },
|
||||
{ MAC_CHECK_VNODE_STAT,
|
||||
(macop_t)mac_bsdextended_check_vnode_stat },
|
||||
{ MAC_OP_LAST, NULL }
|
||||
};
|
||||
|
||||
MAC_POLICY_SET(mac_bsdextended_ops, trustedbsd_mac_bsdextended,
|
||||
"TrustedBSD MAC/BSD Extended", MPC_LOADTIME_FLAG_UNLOADOK, NULL);
|
||||
60
sys/security/mac_bsdextended/mac_bsdextended.h
Normal file
60
sys/security/mac_bsdextended/mac_bsdextended.h
Normal file
@ -0,0 +1,60 @@
|
||||
/*-
|
||||
* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
|
||||
* Copyright (c) 2001, 2002 Networks Associates Technology, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This software was developed by Robert Watson for the TrustedBSD Project.
|
||||
*
|
||||
* This software was developed for the FreeBSD Project in part by NAI Labs,
|
||||
* the Security Research Division of Network Associates, Inc. under
|
||||
* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
|
||||
* CHATS research program.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The names of the authors may not be used to endorse or promote
|
||||
* products derived from this software without specific prior written
|
||||
* permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
#ifndef _SYS_SECURITY_MAC_BSDEXTENDED_H
|
||||
#define _SYS_SECURITY_MAC_BSDEXTENDED_H
|
||||
|
||||
#define MBI_UID_DEFINED 0x00000001 /* uid field should be used */
|
||||
#define MBI_GID_DEFINED 0x00000002 /* gid field should be used */
|
||||
#define MBI_NEGATED 0x00000004 /* negate uid/gid matches */
|
||||
#define MBI_BITS (MBI_UID_DEFINED | MBI_GID_DEFINED | MBI_NEGATED)
|
||||
|
||||
struct mac_bsdextended_identity {
|
||||
int mbi_flags;
|
||||
uid_t mbi_uid;
|
||||
gid_t mbi_gid;
|
||||
};
|
||||
|
||||
struct mac_bsdextended_rule {
|
||||
struct mac_bsdextended_identity mbr_subject;
|
||||
struct mac_bsdextended_identity mbr_object;
|
||||
mode_t mbr_mode; /* maximum access */
|
||||
};
|
||||
|
||||
#endif /* _SYS_SECURITY_MAC_BSDEXTENDED_H */
|
||||
173
sys/security/mac_ifoff/mac_ifoff.c
Normal file
173
sys/security/mac_ifoff/mac_ifoff.c
Normal file
@ -0,0 +1,173 @@
|
||||
/*-
|
||||
* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
|
||||
* Copyright (c) 2001, 2002 Networks Associates Technology, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This software was developed by Robert Watson for the TrustedBSD Project.
|
||||
*
|
||||
* This software was developed for the FreeBSD Project in part by NAI Labs,
|
||||
* the Security Research Division of Network Associates, Inc. under
|
||||
* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
|
||||
* CHATS research program.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The names of the authors may not be used to endorse or promote
|
||||
* products derived from this software without specific prior written
|
||||
* permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
/*
|
||||
* Developed by the TrustedBSD Project.
|
||||
* Limit access to interfaces until they are specifically administratively
|
||||
* enabled. Prevents protocol stack-driven packet leakage in unsafe
|
||||
* environments.
|
||||
*/
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/param.h>
|
||||
#include <sys/conf.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/mac.h>
|
||||
#include <sys/mount.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/sysproto.h>
|
||||
#include <sys/sysent.h>
|
||||
#include <sys/vnode.h>
|
||||
#include <sys/file.h>
|
||||
#include <sys/socket.h>
|
||||
#include <sys/socketvar.h>
|
||||
#include <sys/sysctl.h>
|
||||
|
||||
#include <net/bpfdesc.h>
|
||||
#include <net/if.h>
|
||||
#include <net/if_types.h>
|
||||
#include <net/if_var.h>
|
||||
|
||||
#include <vm/vm.h>
|
||||
|
||||
#include <sys/mac_policy.h>
|
||||
|
||||
SYSCTL_DECL(_security_mac);
|
||||
|
||||
SYSCTL_NODE(_security_mac, OID_AUTO, ifoff, CTLFLAG_RW, 0,
|
||||
"TrustedBSD mac_ifoff policy controls");
|
||||
|
||||
static int mac_ifoff_enabled = 1;
|
||||
SYSCTL_INT(_security_mac_ifoff, OID_AUTO, enabled, CTLFLAG_RW,
|
||||
&mac_ifoff_enabled, 0, "Enforce ifoff policy");
|
||||
TUNABLE_INT("security.mac.ifoff.enabled", &mac_ifoff_enabled);
|
||||
|
||||
static int mac_ifoff_lo_enabled = 1;
|
||||
SYSCTL_INT(_security_mac_ifoff, OID_AUTO, lo_enabled, CTLFLAG_RW,
|
||||
&mac_ifoff_lo_enabled, 0, "Enable loopback interfaces");
|
||||
TUNABLE_INT("security.mac.ifoff.lo_enabled", &mac_ifoff_lo_enabled);
|
||||
|
||||
static int mac_ifoff_other_enabled = 0;
|
||||
SYSCTL_INT(_security_mac_ifoff, OID_AUTO, other_enabled, CTLFLAG_RW,
|
||||
&mac_ifoff_other_enabled, 0, "Enable other interfaces");
|
||||
TUNABLE_INT("security.mac.ifoff.other_enabled", &mac_ifoff_other_enabled);
|
||||
|
||||
static int mac_ifoff_bpfrecv_enabled = 0;
|
||||
SYSCTL_INT(_security_mac_ifoff, OID_AUTO, bpfrecv_enabled, CTLFLAG_RW,
|
||||
&mac_ifoff_bpfrecv_enabled, 0, "Enable BPF reception even when interface "
|
||||
"is disabled");
|
||||
TUNABLE_INT("security.mac.ifoff.bpfrecv.enabled", &mac_ifoff_bpfrecv_enabled);
|
||||
|
||||
static int
|
||||
check_ifnet_outgoing(struct ifnet *ifnet)
|
||||
{
|
||||
|
||||
if (!mac_ifoff_enabled)
|
||||
return (0);
|
||||
|
||||
if (mac_ifoff_lo_enabled && ifnet->if_type == IFT_LOOP)
|
||||
return (0);
|
||||
|
||||
if (mac_ifoff_other_enabled && ifnet->if_type != IFT_LOOP)
|
||||
return (0);
|
||||
|
||||
return (EPERM);
|
||||
}
|
||||
|
||||
static int
|
||||
check_ifnet_incoming(struct ifnet *ifnet, int viabpf)
|
||||
{
|
||||
if (!mac_ifoff_enabled)
|
||||
return (0);
|
||||
|
||||
if (mac_ifoff_lo_enabled && ifnet->if_type == IFT_LOOP)
|
||||
return (0);
|
||||
|
||||
if (mac_ifoff_other_enabled && ifnet->if_type != IFT_LOOP)
|
||||
return (0);
|
||||
|
||||
if (viabpf && mac_ifoff_bpfrecv_enabled)
|
||||
return (0);
|
||||
|
||||
return (EPERM);
|
||||
}
|
||||
|
||||
static int
|
||||
mac_ifoff_check_bpfdesc_receive(struct bpf_d *bpf_d, struct label *bpflabel,
|
||||
struct ifnet *ifnet, struct label *ifnetlabel)
|
||||
{
|
||||
|
||||
return (check_ifnet_incoming(ifnet, 1));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_ifoff_check_ifnet_transmit(struct ifnet *ifnet, struct label *ifnetlabel,
|
||||
struct mbuf *m, struct label *mbuflabel)
|
||||
{
|
||||
|
||||
return (check_ifnet_outgoing(ifnet));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_ifoff_check_socket_receive(struct socket *so, struct label *socketlabel,
|
||||
struct mbuf *m, struct label *mbuflabel)
|
||||
{
|
||||
|
||||
if (m->m_flags & M_PKTHDR) {
|
||||
if (m->m_pkthdr.rcvif != NULL)
|
||||
return (check_ifnet_incoming(m->m_pkthdr.rcvif, 0));
|
||||
}
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
static struct mac_policy_op_entry mac_ifoff_ops[] =
|
||||
{
|
||||
{ MAC_CHECK_BPFDESC_RECEIVE,
|
||||
(macop_t)mac_ifoff_check_bpfdesc_receive },
|
||||
{ MAC_CHECK_IFNET_TRANSMIT,
|
||||
(macop_t)mac_ifoff_check_ifnet_transmit },
|
||||
{ MAC_CHECK_SOCKET_RECEIVE,
|
||||
(macop_t)mac_ifoff_check_socket_receive },
|
||||
{ MAC_OP_LAST, NULL }
|
||||
};
|
||||
|
||||
MAC_POLICY_SET(mac_ifoff_ops, trustedbsd_mac_ifoff, "TrustedBSD MAC/ifoff",
|
||||
MPC_LOADTIME_FLAG_UNLOADOK, NULL);
|
||||
2177
sys/security/mac_mls/mac_mls.c
Normal file
2177
sys/security/mac_mls/mac_mls.c
Normal file
File diff suppressed because it is too large
Load Diff
61
sys/security/mac_mls/mac_mls.h
Normal file
61
sys/security/mac_mls/mac_mls.h
Normal file
@ -0,0 +1,61 @@
|
||||
/*-
|
||||
* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
|
||||
* Copyright (c) 2001, 2002 Networks Associates Technology, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This software was developed by Robert Watson for the TrustedBSD Project.
|
||||
*
|
||||
* This software was developed for the FreeBSD Project in part by NAI Labs,
|
||||
* the Security Research Division of Network Associates, Inc. under
|
||||
* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
|
||||
* CHATS research program.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The names of the authors may not be used to endorse or promote
|
||||
* products derived from this software without specific prior written
|
||||
* permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
/*
|
||||
* Definitions for the TrustedBSD MLS confidentiality policy module.
|
||||
*/
|
||||
#ifndef _SYS_SECURITY_MAC_MLS_H
|
||||
#define _SYS_SECURITY_MAC_MLS_H
|
||||
|
||||
#define MAC_MLS_EXTATTR_NAMESPACE EXTATTR_NAMESPACE_SYSTEM
|
||||
#define MAC_MLS_EXTATTR_NAME "mac_biba"
|
||||
|
||||
#define MAC_MLS_FLAG_SINGLE 0x00000001 /* mm_single initialized */
|
||||
#define MAC_MLS_FLAG_RANGE 0x00000002 /* mm_range* initialized */
|
||||
#define MAC_MLS_FLAGS_BOTH (MAC_MLS_FLAG_SINGLE | MAC_MLS_FLAG_RANGE)
|
||||
|
||||
#define MAC_MLS_TYPE_UNDEF 0 /* Undefined */
|
||||
#define MAC_MLS_TYPE_LEVEL 1 /* Hierarchal level with mm_level. */
|
||||
#define MAC_MLS_TYPE_LOW 2 /* Dominated by any
|
||||
* MAC_MLS_TYPE_LABEL. */
|
||||
#define MAC_MLS_TYPE_HIGH 3 /* Dominates any
|
||||
* MAC_MLS_TYPE_LABEL. */
|
||||
#define MAC_MLS_TYPE_EQUAL 4 /* Equivilent to any
|
||||
* MAC_MLS_TYPE_LABEL. */
|
||||
|
||||
#endif /* !_SYS_SECURITY_MAC_MLS_H */
|
||||
1105
sys/security/mac_none/mac_none.c
Normal file
1105
sys/security/mac_none/mac_none.c
Normal file
File diff suppressed because it is too large
Load Diff
179
sys/security/mac_seeotheruids/mac_seeotheruids.c
Normal file
179
sys/security/mac_seeotheruids/mac_seeotheruids.c
Normal file
@ -0,0 +1,179 @@
|
||||
/*-
|
||||
* Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
|
||||
* Copyright (c) 2001, 2002 Networks Associates Technology, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This software was developed by Robert Watson for the TrustedBSD Project.
|
||||
*
|
||||
* This software was developed for the FreeBSD Project in part by NAI Labs,
|
||||
* the Security Research Division of Network Associates, Inc. under
|
||||
* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
|
||||
* CHATS research program.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The names of the authors may not be used to endorse or promote
|
||||
* products derived from this software without specific prior written
|
||||
* permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $FreeBSD$
|
||||
*/
|
||||
|
||||
/*
|
||||
* Developed by the TrustedBSD Project.
|
||||
* Prevent processes owned by a particular uid from seeing various transient
|
||||
* kernel objects associated with other uids.
|
||||
*/
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/param.h>
|
||||
#include <sys/conf.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/mac.h>
|
||||
#include <sys/mount.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/sysproto.h>
|
||||
#include <sys/sysent.h>
|
||||
#include <sys/vnode.h>
|
||||
#include <sys/file.h>
|
||||
#include <sys/socket.h>
|
||||
#include <sys/socketvar.h>
|
||||
#include <sys/sysctl.h>
|
||||
|
||||
#include <net/bpfdesc.h>
|
||||
#include <net/if.h>
|
||||
#include <net/if_types.h>
|
||||
#include <net/if_var.h>
|
||||
|
||||
#include <vm/vm.h>
|
||||
|
||||
#include <sys/mac_policy.h>
|
||||
|
||||
SYSCTL_DECL(_security_mac);
|
||||
|
||||
SYSCTL_NODE(_security_mac, OID_AUTO, seeotheruids, CTLFLAG_RW, 0,
|
||||
"TrustedBSD mac_seeotheruids policy controls");
|
||||
|
||||
static int mac_seeotheruids_enabled = 0;
|
||||
SYSCTL_INT(_security_mac_seeotheruids, OID_AUTO, enabled, CTLFLAG_RW,
|
||||
&mac_seeotheruids_enabled, 0, "Enforce seeotheruids policy");
|
||||
|
||||
/*
|
||||
* Exception: allow credentials to be aware of other credentials with the
|
||||
* same primary gid.
|
||||
*/
|
||||
static int primarygroup_enabled = 0;
|
||||
SYSCTL_INT(_security_mac_seeotheruids, OID_AUTO, primarygroup_enabled,
|
||||
CTLFLAG_RW, &primarygroup_enabled, 0, "Make an exception for credentials "
|
||||
"with the same real primary group id");
|
||||
|
||||
/*
|
||||
* Exception: allow processes with a specific gid to be exempt from the
|
||||
* policy. One sysctl enables this functionality; the other sets the
|
||||
* exempt gid.
|
||||
*/
|
||||
static int specificgid_enabled = 0;
|
||||
SYSCTL_INT(_security_mac_seeotheruids, OID_AUTO, specificgid_enabled,
|
||||
CTLFLAG_RW, &specificgid_enabled, 0, "Make an exception for credentials "
|
||||
"with a specific gid as their real primary group id or group set");
|
||||
|
||||
static gid_t specificgid = 0;
|
||||
SYSCTL_INT(_security_mac_seeotheruids, OID_AUTO, specificgid, CTLFLAG_RW,
|
||||
&specificgid, 0, "Specific gid to be exempt from seeotheruids policy");
|
||||
|
||||
static int
|
||||
mac_seeotheruids_check(struct ucred *u1, struct ucred *u2)
|
||||
{
|
||||
|
||||
if (!mac_seeotheruids_enabled)
|
||||
return (0);
|
||||
|
||||
if (primarygroup_enabled) {
|
||||
if (u1->cr_rgid == u2->cr_rgid)
|
||||
return (0);
|
||||
}
|
||||
|
||||
if (specificgid_enabled) {
|
||||
if (u1->cr_rgid == specificgid || groupmember(specificgid, u1))
|
||||
return (0);
|
||||
}
|
||||
|
||||
if (u1->cr_ruid == u2->cr_ruid)
|
||||
return (0);
|
||||
|
||||
return (ESRCH);
|
||||
}
|
||||
|
||||
static int
|
||||
mac_seeotheruids_check_cred_visible(struct ucred *u1, struct ucred *u2)
|
||||
{
|
||||
|
||||
return (mac_seeotheruids_check(u1, u2));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_seeotheruids_check_proc_signal(struct ucred *cred, struct proc *proc,
|
||||
int signum)
|
||||
{
|
||||
|
||||
return (mac_seeotheruids_check(cred, proc->p_ucred));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_seeotheruids_check_proc_sched(struct ucred *cred, struct proc *proc)
|
||||
{
|
||||
|
||||
return (mac_seeotheruids_check(cred, proc->p_ucred));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_seeotheruids_check_proc_debug(struct ucred *cred, struct proc *proc)
|
||||
{
|
||||
|
||||
return (mac_seeotheruids_check(cred, proc->p_ucred));
|
||||
}
|
||||
|
||||
static int
|
||||
mac_seeotheruids_check_socket_visible(struct ucred *cred, struct socket *socket,
|
||||
struct label *socketlabel)
|
||||
{
|
||||
|
||||
return (mac_seeotheruids_check(cred, socket->so_cred));
|
||||
}
|
||||
|
||||
static struct mac_policy_op_entry mac_seeotheruids_ops[] =
|
||||
{
|
||||
{ MAC_CHECK_CRED_VISIBLE,
|
||||
(macop_t)mac_seeotheruids_check_cred_visible },
|
||||
{ MAC_CHECK_PROC_DEBUG,
|
||||
(macop_t)mac_seeotheruids_check_proc_debug },
|
||||
{ MAC_CHECK_PROC_SCHED,
|
||||
(macop_t)mac_seeotheruids_check_proc_sched },
|
||||
{ MAC_CHECK_PROC_SIGNAL,
|
||||
(macop_t)mac_seeotheruids_check_proc_signal },
|
||||
{ MAC_CHECK_SOCKET_VISIBLE,
|
||||
(macop_t)mac_seeotheruids_check_socket_visible },
|
||||
{ MAC_OP_LAST, NULL }
|
||||
};
|
||||
|
||||
MAC_POLICY_SET(mac_seeotheruids_ops, trustedbsd_mac_seeotheruids,
|
||||
"TrustedBSD MAC/seeotheruids", MPC_LOADTIME_FLAG_UNLOADOK, NULL);
|
||||
1105
sys/security/mac_stub/mac_stub.c
Normal file
1105
sys/security/mac_stub/mac_stub.c
Normal file
File diff suppressed because it is too large
Load Diff
1311
sys/security/mac_test/mac_test.c
Normal file
1311
sys/security/mac_test/mac_test.c
Normal file
File diff suppressed because it is too large
Load Diff
Loading…
x
Reference in New Issue
Block a user