FYI for those working with audit and intrusion detection on FreeBSD.
Robert N M Watson
---------- Forwarded message ----------
Date: Mon, 5 Jun 2006 17:01:04 +0100 (BST)
From: Robert Watson <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: Heads up: OpenBSM 1.0a6, per-auditpipe preselection imported to CVS
This is a heads up to current@ users regarding two moderate sized sets of
changes that entered FreeBSD CVS today:
(1) I imported OpenBSM 1.0 alpha 6.
(2) I imported support for per-auditpipe preselection.
Detailed commit messages are below.
Robert N M Watson
---------- Forwarded message ----------
Date: Mon, 5 Jun 2006 10:52:14 +0000 (UTC)
From: Robert Watson <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED], [EMAIL PROTECTED], [email protected]
Subject: cvs commit: src/contrib/openbsm - Imported sources
rwatson 2006-06-05 10:52:14 UTC
FreeBSD src repository
src/contrib/openbsm - Imported sources
Update of /home/ncvs/src/contrib/openbsm
In directory repoman.freebsd.org:/tmp/cvs-serv59860
Log Message:
Vendor branch import of TrustedBSD OpenBSM 1.0 alpha 6:
- Use AU_TO_WRITE and AU_NO_TO_WRITE for the 'keep' argument to au_close();
previously we used hard-coded 0 and 1 values.
- Add man page for au_open(), au_write(), au_close(), and
au_close_buffer().
- Support a more complete range of data types for the arbitrary data token:
add AUR_CHAR (alias to AUR_BYTE), remove AUR_LONG, add AUR_INT32 (alias
to AUR_INT), add AUR_INT64.
- Add au_close_token(), which allows writing a single token_t to a memory
buffer. Not likely to be used much by applications, but useful for
writing test tools.
- Modify au_to_file() so that it accepts a timeval in user space, not just
kernel -- this is not a Solaris BSM API so can be modified without
causing compatibility issues.
- Define a new API, au_to_header32_tm(), which adds a struct timeval
argument to the ordinary au_to_header32(), which is now implemented by
wrapping au_to_header32_tm() and calling gettimeofday(). #ifndef KERNEL
the APIs that invoke gettimeofday(), rather than having a variable
definition. Don't try to retrieve time zone information using
gettimeofday(), as it's not needed, and introduces possible failure
modes.
- Don't perform byte order transformations on the addr/machine fields of
the terminal ID that appears in the process32/subject32 tokens. These
are assumed to be IP addresses, and as such, to be in network byte
order.
- Universally, APIs now assume that IP addresses and ports are provided
in network byte order. APIs now generally provide these types in
network byte order when decoding.
- Beginnings of an OpenBSM test framework can now be found in openbsm/test.
This code is not built or installed by default.
- auditd now assigns more appropriate syslog levels to its debugging and
error information.
- Support for audit filters introduced: audit filters are dynamically
loaded shared objects that run in the context of a new daemon,
auditfilterd. The daemon reads from an audit pipe and feeds both BSM and
parsed versions of records to shared objects using a module API. This
will provide a framework for the writing of intrusion detection services.
- New utility API, audit_submit(), added to capture common elements of audit
record submission for many applications.
Obtained from: TrustedBSD Project
Status:
Vendor Tag: TrustedBSD
Release Tags: OPENBSM_1_0_ALPHA_6
U src/contrib/openbsm/HISTORY
U src/contrib/openbsm/LICENSE
U src/contrib/openbsm/Makefile.am
U src/contrib/openbsm/Makefile.in
U src/contrib/openbsm/README
U src/contrib/openbsm/TODO
U src/contrib/openbsm/VERSION
U src/contrib/openbsm/aclocal.m4
U src/contrib/openbsm/autogen.sh
U src/contrib/openbsm/configure
U src/contrib/openbsm/configure.ac
U src/contrib/openbsm/bin/Makefile.am
U src/contrib/openbsm/bin/Makefile.in
U src/contrib/openbsm/bin/audit/Makefile.am
U src/contrib/openbsm/bin/audit/Makefile.in
U src/contrib/openbsm/bin/audit/audit.8
U src/contrib/openbsm/bin/audit/audit.c
U src/contrib/openbsm/bin/auditd/Makefile.am
U src/contrib/openbsm/bin/auditd/Makefile.in
U src/contrib/openbsm/bin/auditd/audit_warn.c
U src/contrib/openbsm/bin/auditd/auditd.8
U src/contrib/openbsm/bin/auditd/auditd.c
U src/contrib/openbsm/bin/auditd/auditd.h
N src/contrib/openbsm/bin/auditfilterd/Makefile.am
N src/contrib/openbsm/bin/auditfilterd/Makefile.in
N src/contrib/openbsm/bin/auditfilterd/auditfilterd.8
N src/contrib/openbsm/bin/auditfilterd/auditfilterd.c
N src/contrib/openbsm/bin/auditfilterd/auditfilterd.h
N src/contrib/openbsm/bin/auditfilterd/auditfilterd_conf.c
U src/contrib/openbsm/bin/auditreduce/Makefile.am
U src/contrib/openbsm/bin/auditreduce/Makefile.in
U src/contrib/openbsm/bin/auditreduce/auditreduce.1
U src/contrib/openbsm/bin/auditreduce/auditreduce.c
U src/contrib/openbsm/bin/auditreduce/auditreduce.h
U src/contrib/openbsm/bin/praudit/Makefile.am
U src/contrib/openbsm/bin/praudit/Makefile.in
U src/contrib/openbsm/bin/praudit/praudit.1
U src/contrib/openbsm/bin/praudit/praudit.c
U src/contrib/openbsm/bsm/Makefile.am
U src/contrib/openbsm/bsm/Makefile.in
U src/contrib/openbsm/bsm/audit.h
N src/contrib/openbsm/bsm/audit_filter.h
U src/contrib/openbsm/bsm/audit_internal.h
U src/contrib/openbsm/bsm/audit_kevents.h
U src/contrib/openbsm/bsm/audit_record.h
U src/contrib/openbsm/bsm/audit_uevents.h
U src/contrib/openbsm/bsm/libbsm.h
U src/contrib/openbsm/compat/endian.h
U src/contrib/openbsm/compat/queue.h
U src/contrib/openbsm/config/config.guess
U src/contrib/openbsm/config/config.h.in
U src/contrib/openbsm/config/config.sub
U src/contrib/openbsm/config/depcomp
U src/contrib/openbsm/config/install-sh
U src/contrib/openbsm/config/ltmain.sh
U src/contrib/openbsm/config/missing
U src/contrib/openbsm/etc/audit_class
U src/contrib/openbsm/etc/audit_control
U src/contrib/openbsm/etc/audit_event
N src/contrib/openbsm/etc/audit_filter
U src/contrib/openbsm/etc/audit_user
U src/contrib/openbsm/etc/audit_warn
U src/contrib/openbsm/libbsm/Makefile.am
U src/contrib/openbsm/libbsm/Makefile.in
U src/contrib/openbsm/libbsm/au_class.3
U src/contrib/openbsm/libbsm/au_control.3
U src/contrib/openbsm/libbsm/au_event.3
U src/contrib/openbsm/libbsm/au_free_token.3
U src/contrib/openbsm/libbsm/au_io.3
U src/contrib/openbsm/libbsm/au_mask.3
N src/contrib/openbsm/libbsm/au_open.3
U src/contrib/openbsm/libbsm/au_token.3
U src/contrib/openbsm/libbsm/au_user.3
N src/contrib/openbsm/libbsm/audit_submit.3
U src/contrib/openbsm/libbsm/bsm_audit.c
U src/contrib/openbsm/libbsm/bsm_class.c
U src/contrib/openbsm/libbsm/bsm_control.c
U src/contrib/openbsm/libbsm/bsm_event.c
U src/contrib/openbsm/libbsm/bsm_flags.c
U src/contrib/openbsm/libbsm/bsm_io.c
U src/contrib/openbsm/libbsm/bsm_mask.c
U src/contrib/openbsm/libbsm/bsm_notify.c
U src/contrib/openbsm/libbsm/bsm_token.c
U src/contrib/openbsm/libbsm/bsm_user.c
U src/contrib/openbsm/libbsm/libbsm.3
U src/contrib/openbsm/libbsm/bsm_wrappers.c
U src/contrib/openbsm/man/Makefile.am
U src/contrib/openbsm/man/Makefile.in
U src/contrib/openbsm/man/audit.2
U src/contrib/openbsm/man/audit.log.5
U src/contrib/openbsm/man/audit_class.5
U src/contrib/openbsm/man/audit_control.5
U src/contrib/openbsm/man/audit_event.5
U src/contrib/openbsm/man/audit_user.5
U src/contrib/openbsm/man/audit_warn.5
U src/contrib/openbsm/man/auditctl.2
U src/contrib/openbsm/man/auditon.2
U src/contrib/openbsm/man/getaudit.2
U src/contrib/openbsm/man/getauid.2
U src/contrib/openbsm/man/setaudit.2
U src/contrib/openbsm/man/setauid.2
N src/contrib/openbsm/modules/Makefile.am
N src/contrib/openbsm/modules/Makefile.in
N src/contrib/openbsm/modules/auditfilter_noop/Makefile.am
N src/contrib/openbsm/modules/auditfilter_noop/Makefile.in
N src/contrib/openbsm/modules/auditfilter_noop/auditfilter_noop.c
N src/contrib/openbsm/test/Makefile.am
N src/contrib/openbsm/test/Makefile.in
N src/contrib/openbsm/test/bsm/Makefile.am
N src/contrib/openbsm/test/bsm/Makefile.in
N src/contrib/openbsm/test/bsm/generate.c
U src/contrib/openbsm/tools/Makefile.am
U src/contrib/openbsm/tools/Makefile.in
U src/contrib/openbsm/tools/audump.c
No conflicts created by this import
---------- Forwarded message ----------
Date: Mon, 5 Jun 2006 14:48:17 +0000 (UTC)
From: Robert Watson <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED], [EMAIL PROTECTED], [email protected]
Subject: cvs commit: src/sys/security/audit audit.c audit_bsm_klib.c
audit_ioctl.h audit_pipe.c audit_private.h audit_worker.c
rwatson 2006-06-05 14:48:17 UTC
FreeBSD src repository
Modified files:
sys/security/audit audit.c audit_bsm_klib.c audit_ioctl.h
audit_pipe.c audit_private.h
audit_worker.c
Log:
Introduce support for per-audit pipe preselection independent from the
global audit trail configuration. This allows applications consuming
audit trails to specify parameters for which audit records are of
interest, including selecting records not required by the global trail.
Allowing application interest specification without changing the global
configuration allows intrusion detection systems to run without
interfering with global auditing or each other (if multiple are
present). To implement this:
- Kernel audit records now carry a flag to indicate whether they have
been selected by the global trail or by the audit pipe subsystem,
set during record commit, so that this information is available
after BSM conversion when delivering the BSM to the trail and audit
pipes in the audit worker thread asynchronously. Preselection by
either record target will cause the record to be kept.
- Similar changes to preselection when the audit record is created
when the system call is entering: consult both the global trail and
pipes.
- au_preselect() now accepts the class in order to avoid repeatedly
looking up the mask for each preselection test.
- Define a series of ioctls that allow applications to specify whether
they want to track the global trail, or program their own
preselection parameters: they may specify their own flags and naflags
masks, similar to the global masks of the same name, as well as a set
of per-auid masks. They also set a per-pipe mode specifying whether
they track the global trail, or user their own -- the door is left
open for future additional modes. A new ioctl is defined to allow a
user process to flush the current audit pipe queue, which can be used
after reprogramming pre-selection to make sure that only records of
interest are received in future reads.
- Audit pipe data structures are extended to hold the additional fields
necessary to support preselection. By default, audit pipes track the
global trail, so "praudit /dev/auditpipe" will track the global audit
trail even though praudit doesn't program the audit pipe selection
model.
- Comment about the complexities of potentially adding partial read
support to audit pipes.
By using a set of ioctls, applications can select which records are of
interest, and toggle the preselection mode.
Obtained from: TrustedBSD Project
Revision Changes Path
1.15 +28 -16 src/sys/security/audit/audit.c
1.4 +3 -6 src/sys/security/audit/audit_bsm_klib.c
1.3 +32 -0 src/sys/security/audit/audit_ioctl.h
1.7 +393 -13 src/sys/security/audit/audit_pipe.c
1.9 +13 -3 src/sys/security/audit/audit_private.h
1.8 +49 -27 src/sys/security/audit/audit_worker.c
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