File: //usr/local/modsecurity-crs/rules/RESPONSE-959-BLOCKING-EVALUATION.conf.off
# ------------------------------------------------------------------------
# OWASP CRS ver.4.17.0-dev
# Copyright (c) 2006-2020 Trustwave and contributors. All rights reserved.
# Copyright (c) 2021-2025 CRS project. All rights reserved.
#
# The OWASP CRS is distributed under
# Apache Software License (ASL) version 2
# Please see the enclosed LICENSE file for full details.
# ------------------------------------------------------------------------
# You should set the score to the proper threshold you would prefer. If kept at "@gt 0"
# it will work similarly to previous Mod CRS rules and will create an event in the error_log
# file if there are any rules that match. If you would like to lessen the number of events
# generated in the error_log file, you should increase the anomaly score threshold to
# something like "@gt 20". This would only generate an event in the error_log file if
# there are multiple lower severity rule matches or if any 1 higher severity item matches.
#
# You should also set the desired disruptive action (deny, redirect, etc...).
#
#
# -= Paranoia Level 0 (empty) =- (apply unconditionally)
#
# Summing up the blocking and detection anomaly scores in phase 3
# even when early blocking is disabled, we need to sum up the scores in phase 3
# this prevents bugs in phase 5 if Apache skips phases because of error handling
# See: https://github.com/coreruleset/coreruleset/issues/2319#issuecomment-1047503932
SecRule TX:BLOCKING_PARANOIA_LEVEL "@ge 1" \
"id:959052,\
phase:3,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.blocking_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl1}'"
SecRule TX:DETECTION_PARANOIA_LEVEL "@ge 1" \
"id:959152,\
phase:3,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.detection_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl1}'"
SecRule TX:BLOCKING_PARANOIA_LEVEL "@ge 2" \
"id:959053,\
phase:3,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.blocking_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl2}'"
SecRule TX:DETECTION_PARANOIA_LEVEL "@ge 2" \
"id:959153,\
phase:3,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.detection_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl2}'"
SecRule TX:BLOCKING_PARANOIA_LEVEL "@ge 3" \
"id:959054,\
phase:3,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.blocking_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl3}'"
SecRule TX:DETECTION_PARANOIA_LEVEL "@ge 3" \
"id:959154,\
phase:3,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.detection_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl3}'"
SecRule TX:BLOCKING_PARANOIA_LEVEL "@ge 4" \
"id:959055,\
phase:3,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.blocking_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl4}'"
SecRule TX:DETECTION_PARANOIA_LEVEL "@ge 4" \
"id:959155,\
phase:3,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.detection_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl4}'"
# at start of phase 4, we reset the aggregate scores to 0 to prevent duplicate counting of per-PL scores
# this is necessary because the per-PL scores are counted across phases
SecAction \
"id:959059,\
phase:4,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.blocking_outbound_anomaly_score=0'"
SecAction \
"id:959159,\
phase:4,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.detection_outbound_anomaly_score=0'"
SecMarker "EARLY_BLOCKING_ANOMALY_SCORING"
# Summing up the blocking and detection anomaly scores in phase 4
SecRule TX:BLOCKING_PARANOIA_LEVEL "@ge 1" \
"id:959060,\
phase:4,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.blocking_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl1}'"
SecRule TX:DETECTION_PARANOIA_LEVEL "@ge 1" \
"id:959160,\
phase:4,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.detection_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl1}'"
SecRule TX:BLOCKING_PARANOIA_LEVEL "@ge 2" \
"id:959061,\
phase:4,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.blocking_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl2}'"
SecRule TX:DETECTION_PARANOIA_LEVEL "@ge 2" \
"id:959161,\
phase:4,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.detection_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl2}'"
SecRule TX:BLOCKING_PARANOIA_LEVEL "@ge 3" \
"id:959062,\
phase:4,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.blocking_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl3}'"
SecRule TX:DETECTION_PARANOIA_LEVEL "@ge 3" \
"id:959162,\
phase:4,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.detection_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl3}'"
SecRule TX:BLOCKING_PARANOIA_LEVEL "@ge 4" \
"id:959063,\
phase:4,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.blocking_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl4}'"
SecRule TX:DETECTION_PARANOIA_LEVEL "@ge 4" \
"id:959163,\
phase:4,\
pass,\
t:none,\
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
setvar:'tx.detection_outbound_anomaly_score=+%{tx.outbound_anomaly_score_pl4}'"
#
# -=[ Anomaly Mode: Overall Transaction Anomaly Score ]=-
#
# if early blocking is active, check threshold in phase 3
SecRule TX:BLOCKING_OUTBOUND_ANOMALY_SCORE "@ge %{tx.outbound_anomaly_score_threshold}" \
"id:959101,\
phase:3,\
deny,\
t:none,\
msg:'Outbound Anomaly Score Exceeded in phase 3 (Total Score: %{tx.blocking_outbound_anomaly_score})',\
tag:'anomaly-evaluation',\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev',\
chain"
SecRule TX:EARLY_BLOCKING "@eq 1"
# always check threshold in phase 4
SecRule TX:BLOCKING_OUTBOUND_ANOMALY_SCORE "@ge %{tx.outbound_anomaly_score_threshold}" \
"id:959100,\
phase:4,\
deny,\
t:none,\
msg:'Outbound Anomaly Score Exceeded (Total Score: %{tx.blocking_outbound_anomaly_score})',\
tag:'anomaly-evaluation',\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.17.0-dev'"
SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 1" "id:959011,phase:3,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-959-BLOCKING-EVALUATION"
SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 1" "id:959012,phase:4,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-959-BLOCKING-EVALUATION"
#
# -= Paranoia Level 1 (default) =- (apply only when tx.detection_paranoia_level is sufficiently high: 1 or higher)
#
SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 2" "id:959013,phase:3,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-959-BLOCKING-EVALUATION"
SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 2" "id:959014,phase:4,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-959-BLOCKING-EVALUATION"
#
# -= Paranoia Level 2 =- (apply only when tx.detection_paranoia_level is sufficiently high: 2 or higher)
#
SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 3" "id:959015,phase:3,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-959-BLOCKING-EVALUATION"
SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 3" "id:959016,phase:4,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-959-BLOCKING-EVALUATION"
#
# -= Paranoia Level 3 =- (apply only when tx.detection_paranoia_level is sufficiently high: 3 or higher)
#
SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 4" "id:959017,phase:3,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-959-BLOCKING-EVALUATION"
SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 4" "id:959018,phase:4,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-959-BLOCKING-EVALUATION"
#
# -= Paranoia Level 4 =- (apply only when tx.detection_paranoia_level is sufficiently high: 4 or higher)
#
#
# -= Paranoia Levels Finished =-
#
SecMarker "END-RESPONSE-959-BLOCKING-EVALUATION"