/usr/share/pyshared/PreludeCorrelator/plugins/bruteforce.py is in prelude-correlator 1.0.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | # Copyright (C) 2006 G Ramon Gomez <gene at gomezbrothers dot com>
# Copyright (C) 2009 PreludeIDS Technologies <info@prelude-ids.com>
#
# This file is part of the Prelude-Correlator 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.
import re
from PreludeCorrelator.pluginmanager import Plugin
from PreludeCorrelator.context import Context
class BruteForcePlugin(Plugin):
def _BruteForce(self, idmef):
sadd = idmef.Get("alert.source(*).node.address(*).address")
tadd = idmef.Get("alert.target(*).node.address(*).address")
if not sadd or not tadd:
return
for source in sadd:
for target in tadd:
ctx = Context(("BRUTE ST", source, target), { "expire": 120, "threshold": 5, "alert_on_expire": True }, update=True, idmef = idmef)
if ctx.getUpdateCount() == 0:
ctx.Set("alert.classification.text", "Brute Force attack")
ctx.Set("alert.correlation_alert.name", "Multiple failed login")
ctx.Set("alert.assessment.impact.severity", "high")
ctx.Set("alert.assessment.impact.description", "Multiple failed attempts have been made to login using different account")
def _BruteUserForce(self, idmef):
userid = idmef.Get("alert.target(*).user.user_id(*).name");
if not userid:
return
for user in userid:
ctx = Context(("BRUTE USER", user), { "expire": 120, "threshold": 5, "alert_on_expire": True }, update=True, idmef=idmef)
if ctx.getUpdateCount() == 0:
ctx.Set("alert.classification.text", "Brute Force attack")
ctx.Set("alert.correlation_alert.name", "Multiple failed login against a single account")
ctx.Set("alert.assessment.impact.severity", "high")
ctx.Set("alert.assessment.impact.description", "Multiple failed attempts have been made to login to a user account")
def run(self, idmef):
if not idmef.match("alert.classification.text", re.compile("[Ll]ogin|[Aa]uthentication")):
return
# FIXME: In the future, we might want to include successfull authentication
# following a number of failed events, so that generated CorrelationAlert
# includes full details.
if idmef.Get("alert.assessment.impact.completion") == "succeeded":
return
self._BruteForce(idmef)
self._BruteUserForce(idmef)
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