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#####
#
# Copyright (C) 2004 Yoann Vandoorselaere <yoann@prelude-ids.org>
# All Rights Reserved
#
# This file is part of the Prelude-LML program.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; see the file COPYING. If not, write to
# the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
#
#####
# The two first rules ignore cron jobs (allowing admin to log them, but without receiving
# alerts), without having to reconfigure or change the syslog engine.
#
# other lines will still be logged by pam.rules:
# Dec 14 09:31:58 piche sshd[8778]: pam_unix(ssh:session): session opened for user pollux by (uid=0)
# old pam format (< 0.99):
# ignore opened or closed sessions
#Apr 20 11:55:01 piche CRON[23295]: (pam_unix) session opened for user root by (uid=0)
#Apr 20 11:55:01 piche CRON[23293]: (pam_unix) session closed for user root
#LOG:Dec 14 09:31:58 piche sshd[8778]: pam_unix(ssh:session): session opened for user pollux by (uid=0)
regex=CRON\[\d+\]: \(pam_unix\) session (opened|closed) for user; \
silent; \
last;
# new pam format:
# ignore opened or closed sessions (for all pam modules)
#Dec 14 09:09:01 piche CRON[5898]: pam_unix(cron:session): session opened for user root by (uid=0)
#Dec 14 09:09:01 piche CRON[5898]: pam_unix(cron:session): session closed for user root
#LOG:Dec 14 09:31:58 piche sshd[8778]: pam_unix(ssh:session): session opened for user pollux by (uid=0)
regex=CRON\[\d+\]: \S+\(cron:\S+\): session (opened|closed) for user; \
silent; \
last;
regex=for user root by; id=4; \
assessment.impact.type=admin; \
chained; silent;
#LOG:Aug 14 17:32:19 blah su(pam_unix)[17944]: session opened for user root by (uid=123)
#LOG:Dec 9 18:47:10 devel5 sshd(pam_unix)[13189]: session opened for user yyyy by xxxx(uid=0)
regex=session opened for user (\S+) by (\S*)\(uid=(\d*)\); optgoto=4; \
classification.text=Credentials Change; \
id=1; \
revision=2; \
analyzer(0).name=PAM; \
analyzer(0).class=Authentication; \
assessment.impact.completion=succeeded; \
assessment.impact.type=user; \
assessment.impact.severity=low; \
assessment.impact.description=User $2 authenticated to $1 successfuly; \
source(0).user.category=os-device; \
source(0).user.user_id(0).type=current-user; \
source(0).user.user_id(0).name=$2; \
source(0).user.user_id(0).number=$3; \
target(0).user.category=os-device; \
target(0).user.user_id(0).type=target-user; \
target(0).user.user_id(0).name=$1; \
last
# LOG:Dec 21 21:18:46 share2 sshd(pam_unix)[15525]: authentication failure; logname= uid=0 euid=0 tty=NODEVssh ruser= rhost=a.b.c.d user=root
#
regex=authentication failure\; logname=([^ ]*)[ ]*uid=([^ ]*)[ ]*euid=.* tty=([^ ]*)[ ]*ruser=([^ ]*)[ ]*rhost=([^ ]*)[ ]*user=([^ ]*); \
classification.text=Credentials Change; optgoto=4; \
id=2; \
revision=2; \
analyzer(0).name=PAM; \
analyzer(0).class=Authentication; \
assessment.impact.completion=failed; \
assessment.impact.type=user; \
assessment.impact.severity=high; \
assessment.impact.description=User $4 tried to authenticate as $6 and failed; \
source(0).node.address(0).category=ipv4-addr; \
source(0).node.address(0).address=$5; \
source(0).user.category=os-device; \
source(0).user.user_id(0).type=current-user; \
source(0).user.user_id(0).name=$4; \
source(0).user.user_id(0).tty=$3; \
source(0).user.user_id(0).number=$2; \
target(0).user.category=os-device; \
target(0).user.user_id(0).type=target-user; \
target(0).user.user_id(0).name=$6; \
last
# No log sample; please submit
regex=no such user; \
classification.text=Invalid User; \
id=3; \
revision=1; \
analyzer(0).name=PAM; \
analyzer(0).class=Credentials Change; \
assessment.impact.completion=failed; \
assessment.impact.type=other; \
assessment.impact.severity=medium; \
assessment.impact.description=Someone tried to log in using a non-existant user; \
last
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