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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""Tests for the tag_linux.txt tagging file."""
from __future__ import unicode_literals
import unittest
from plaso.containers import events
from plaso.lib import definitions
from plaso.parsers import bash_history
from plaso.parsers import docker
from plaso.parsers import dpkg
from plaso.parsers import selinux
from plaso.parsers import syslog
from plaso.parsers import utmp
from plaso.parsers import zsh_extended_history
from plaso.parsers.syslog_plugins import cron
from tests.data import test_lib
class LinuxTaggingFileTest(test_lib.TaggingFileTestCase):
"""Tests the tag_linux.txt tagging file.
In the tests below the EventData classes are used to catch failing tagging
rules in case event data types are renamed.
"""
_TAG_FILE = 'tag_linux.txt'
def testRuleApplicationExecution(self):
"""Tests the application_execution tagging rule."""
# Test: data_type is 'bash:history:command'
attribute_values_per_name = {}
self._CheckTaggingRule(
bash_history.BashHistoryEventData, attribute_values_per_name,
['application_execution'])
# Test: data_type is 'docker:json:layer'
attribute_values_per_name = {}
self._CheckTaggingRule(
docker.DockerJSONLayerEventData, attribute_values_per_name,
['application_execution'])
# Test: data_type is 'selinux:line' AND audit_type is 'EXECVE'
attribute_values_per_name = {
'audit_type': ['EXECVE']}
self._CheckTaggingRule(
selinux.SELinuxLogEventData, attribute_values_per_name,
['application_execution'])
# Test: data_type is 'shell:zsh:history'
attribute_values_per_name = {}
self._CheckTaggingRule(
zsh_extended_history.ZshHistoryEventData, attribute_values_per_name,
['application_execution'])
# Test: data_type is 'syslog:cron:task_run'
attribute_values_per_name = {}
self._CheckTaggingRule(
cron.CronTaskRunEventData, attribute_values_per_name,
['application_execution'])
# Test: reporter is 'sudo' AND body contains 'COMMAND='
attribute_values_per_name = {
'body': ['test if my COMMAND=bogus'],
'reporter': ['sudo']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['application_execution'])
def testRuleLogin(self):
"""Tests the login tagging rule."""
# Test: data_type is 'linux:utmp:event' AND type == 7
attribute_values_per_name = {
'type': [7]}
self._CheckTaggingRule(
utmp.UtmpEventData, attribute_values_per_name,
['login'])
# Test: data_type is 'selinux:line' AND audit_type is 'LOGIN'
attribute_values_per_name = {
'audit_type': ['LOGIN']}
self._CheckTaggingRule(
selinux.SELinuxLogEventData, attribute_values_per_name,
['login'])
# Test: reporter is 'login' AND (body contains 'logged in' OR
# body contains 'ROOT LOGIN' OR body contains 'session opened')
attribute_values_per_name = {
'body': ['logged in', 'ROOT LOGIN', 'session opened'],
'reporter': ['login']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['login'])
# Test: reporter is 'sshd' AND (body contains 'session opened' OR
# body contains 'Starting session')
attribute_values_per_name = {
'body': ['session opened', 'Starting session'],
'reporter': ['sshd']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['login'])
# Test: reporter is 'dovecot' AND body contains 'imap-login: Login:'
attribute_values_per_name = {
'body': ['imap-login: Login:'],
'reporter': ['dovecot']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['login'])
# Test: reporter is 'postfix/submission/smtpd' AND body contains 'sasl_'
attribute_values_per_name = {
'body': ['sasl_method=PLAIN, sasl_username='],
'reporter': ['postfix/submission/smtpd']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['login'])
def testRuleLoginFailed(self):
"""Tests the login_failed tagging rule."""
# Test: data_type is 'selinux:line' AND audit_type is 'ANOM_LOGIN_FAILURES'
attribute_values_per_name = {
'audit_type': ['ANOM_LOGIN_FAILURES']}
self._CheckTaggingRule(
selinux.SELinuxLogEventData, attribute_values_per_name,
['login_failed'])
# Test: data_type is 'selinux:line' AND audit_type is 'USER_LOGIN' AND
# body contains 'res=failed'
attribute_values_per_name = {
'audit_type': ['USER_LOGIN'],
'body': ['res=failed']}
self._CheckTaggingRule(
selinux.SELinuxLogEventData, attribute_values_per_name,
['login_failed'])
# Test: data_type is 'syslog:line' AND body contains 'pam_tally2'
attribute_values_per_name = {
'body': ['pam_tally2']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['login_failed'])
# Test: (reporter is 'sshd' OR
# reporter is 'login' OR
# reporter is 'postfix/submission/smtpd' OR
# reporter is 'sudo') AND
# body contains 'uthentication fail'
attribute_values_per_name = {
'body': ['authentication failed', 'authentication failure',
'Authentication failure'],
'reporter': ['login', 'postfix/submission/smtpd', 'sshd', 'sudo']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['login_failed'])
# Test: (reporter is 'xscreensaver' or
# reporter is 'login') AND
# body contains 'FAILED LOGIN'
attribute_values_per_name = {
'body': ['FAILED LOGIN'],
'reporter': ['login', 'xscreensaver']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['login_failed'])
# Test: reporter is 'su' AND body contains 'DENIED'
attribute_values_per_name = {
'body': ['DENIED su from'],
'reporter': ['su']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['login_failed'])
# Test: reporter is 'nologin'
attribute_values_per_name = {
'reporter': ['nologin']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['login_failed'])
def testRuleLogout(self):
"""Tests the logout tagging rule."""
# Test: data_type is 'linux:utmp:event' AND type == 8 AND terminal != '' AND
# pid != 0
# Cannot use _CheckTaggingRule here because of terminal != ''
event = events.EventObject()
event.timestamp = self._TEST_TIMESTAMP
event.timestamp_desc = definitions.TIME_DESCRIPTION_UNKNOWN
event_data = utmp.UtmpEventData()
event_data.type = 0
event_data.terminal = 'tty1'
event_data.pid = 1
storage_writer = self._TagEvent(event, event_data, None)
self.assertEqual(storage_writer.number_of_event_tags, 0)
self._CheckLabels(storage_writer, [])
event_data.type = 8
event_data.terminal = ''
storage_writer = self._TagEvent(event, event_data, None)
self.assertEqual(storage_writer.number_of_event_tags, 0)
self._CheckLabels(storage_writer, [])
event_data.terminal = 'tty1'
event_data.pid = 0
storage_writer = self._TagEvent(event, event_data, None)
self.assertEqual(storage_writer.number_of_event_tags, 0)
self._CheckLabels(storage_writer, [])
event_data.pid = 1
storage_writer = self._TagEvent(event, event_data, None)
self.assertEqual(storage_writer.number_of_event_tags, 1)
self._CheckLabels(storage_writer, ['logout'])
# Test: reporter is 'login' AND body contains 'session closed'
attribute_values_per_name = {
'body': ['session closed'],
'reporter': ['login']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name, ['logout'])
# Test: reporter is 'sshd' AND (body contains 'session closed' OR
# body contains 'Close session')
attribute_values_per_name = {
'body': ['Close session', 'session closed'],
'reporter': ['sshd']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name, ['logout'])
# Test: reporter is 'systemd-logind' AND body contains 'logged out'
attribute_values_per_name = {
'body': ['logged out'],
'reporter': ['systemd-logind']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name, ['logout'])
# Test: reporter is 'dovecot' AND body contains 'Logged out'
attribute_values_per_name = {
'body': ['Logged out'],
'reporter': ['dovecot']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name, ['logout'])
def testRuleSessionStart(self):
"""Tests the session_start tagging rule."""
# Test: reporter is 'systemd-logind' and body contains 'New session'
attribute_values_per_name = {
'body': ['New session'],
'reporter': ['systemd-logind']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['session_start'])
def testRuleSessionStop(self):
"""Tests the session_stop tagging rule."""
# Test: reporter is 'systemd-logind' and body contains 'Removed session'
attribute_values_per_name = {
'body': ['Removed session'],
'reporter': ['systemd-logind']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['session_stop'])
def testRuleBoot(self):
"""Tests the boot tagging rule."""
# Test: data_type is 'linux:utmp:event' AND type == 2 AND
# terminal is 'system boot' AND username is 'reboot'
attribute_values_per_name = {
'terminal': ['system boot'],
'type': [2],
'username': ['reboot']}
self._CheckTaggingRule(
utmp.UtmpEventData, attribute_values_per_name, ['boot'])
def testRuleShutdown(self):
"""Tests the shutdonw tagging rule."""
# Test: data_type is 'linux:utmp:event' AND type == 1 AND
# (terminal is '~~' OR terminal is 'system boot') AND
# username is 'shutdown'
attribute_values_per_name = {
'terminal': ['~~', 'system boot'],
'type': [1],
'username': ['shutdown']}
self._CheckTaggingRule(
utmp.UtmpEventData, attribute_values_per_name, ['shutdown'])
def testRuleRunlevel(self):
"""Tests the runlevel tagging rule."""
# Test: data_type is 'linux:utmp:event' AND type == 1 AND
# username is 'runlevel'
attribute_values_per_name = {
'type': [1],
'username': ['runlevel']}
self._CheckTaggingRule(
utmp.UtmpEventData, attribute_values_per_name, ['runlevel'])
def testRuleDeviceConnection(self):
"""Tests the device_connection tagging rule."""
# Test: reporter is 'kernel' AND body contains 'New USB device found'
attribute_values_per_name = {
'body': ['New USB device found'],
'reporter': ['kernel']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['device_connection'])
def testRuleDeviceDisconnection(self):
"""Tests the device_disconnection tagging rule."""
# Test: reporter is 'kernel' AND body contains 'USB disconnect'
attribute_values_per_name = {
'body': ['USB disconnect'],
'reporter': ['kernel']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['device_disconnection'])
def testRuleApplicationInstall(self):
"""Tests the application_install tagging rule."""
# Test: data_type is 'dpkg:line' AND body contains 'status installed'
attribute_values_per_name = {
'body': ['status installed']}
self._CheckTaggingRule(
dpkg.DpkgEventData, attribute_values_per_name,
['application_install'])
def testRuleServiceStart(self):
"""Tests the service_start tagging rule."""
# Test: data_type is 'selinux:line' AND audit_type is 'SERVICE_START'
attribute_values_per_name = {
'audit_type': ['SERVICE_START']}
self._CheckTaggingRule(
selinux.SELinuxLogEventData, attribute_values_per_name,
['service_start'])
def testRuleServiceStop(self):
"""Tests the service_stop tagging rule."""
# Test: data_type is 'selinux:line' AND audit_type is 'SERVICE_STOP'
attribute_values_per_name = {
'audit_type': ['SERVICE_STOP']}
self._CheckTaggingRule(
selinux.SELinuxLogEventData, attribute_values_per_name,
['service_stop'])
def testRulePromiscuous(self):
"""Tests the promiscuous tagging rule."""
# Test: data_type is 'selinux:line' AND audit_type is 'ANOM_PROMISCUOUS'
attribute_values_per_name = {
'audit_type': ['ANOM_PROMISCUOUS']}
self._CheckTaggingRule(
selinux.SELinuxLogEventData, attribute_values_per_name,
['promiscuous'])
# Test: reporter is 'kernel' AND body contains 'promiscuous mode'
attribute_values_per_name = {
'body': ['promiscuous mode'],
'reporter': ['kernel']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name,
['promiscuous'])
def testRuleCrach(self):
"""Tests the crash tagging rule."""
# Test: data_type is 'selinux:line' AND audit_type is 'ANOM_ABEND'
attribute_values_per_name = {
'audit_type': ['ANOM_ABEND']}
self._CheckTaggingRule(
selinux.SELinuxLogEventData, attribute_values_per_name, ['crash'])
# Test: reporter is 'kernel' AND body contains 'segfault'
attribute_values_per_name = {
'body': ['segfault'],
'reporter': ['kernel']}
self._CheckTaggingRule(
syslog.SyslogLineEventData, attribute_values_per_name, ['crash'])
if __name__ == '__main__':
unittest.main()
|
