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feat: accidental firewall disability prevention #3650

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feat: accidental firewall disability prevention #3650

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3b1a376
Update REQUEST-901-INITIALIZATION.conf
azurit Apr 6, 2024
abcd30d
Update REQUEST-949-BLOCKING-EVALUATION.conf
azurit Apr 6, 2024
dd55a08
Update RESPONSE-959-BLOCKING-EVALUATION.conf
azurit Apr 6, 2024
415602d
Update RESPONSE-980-CORRELATION.conf
azurit Apr 6, 2024
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4 changes: 4 additions & 0 deletions rules/REQUEST-901-INITIALIZATION.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -285,6 +285,10 @@ SecAction \
nolog,\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.0.1-dev',\
setvar:'tx.inbound_early_blocking_evaluated=0',\
setvar:'tx.inbound_blocking_evaluated=0',\
setvar:'tx.outbound_early_blocking_evaluated=0',\
setvar:'tx.outbound_blocking_evaluated=0',\
setvar:'tx.blocking_inbound_anomaly_score=0',\
setvar:'tx.detection_inbound_anomaly_score=0',\
setvar:'tx.inbound_anomaly_score_pl1=0',\
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14 changes: 10 additions & 4 deletions rules/REQUEST-949-BLOCKING-EVALUATION.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -209,7 +209,7 @@ SecMarker "BEGIN-REQUEST-BLOCKING-EVAL"
#

# if early blocking is active, check threshold in phase 1
SecRule TX:BLOCKING_INBOUND_ANOMALY_SCORE "@ge %{tx.inbound_anomaly_score_threshold}" \
SecAction \
"id:949111,\
phase:1,\
deny,\
Expand All @@ -218,19 +218,25 @@ SecRule TX:BLOCKING_INBOUND_ANOMALY_SCORE "@ge %{tx.inbound_anomaly_score_thresh
tag:'anomaly-evaluation',\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.0.1-dev',\
setvar:'tx.inbound_early_blocking_evaluated=1',\
chain"
SecRule TX:EARLY_BLOCKING "@eq 1"
SecRule TX:BLOCKING_INBOUND_ANOMALY_SCORE "@ge %{tx.inbound_anomaly_score_threshold}" \
"chain"
SecRule TX:EARLY_BLOCKING "@eq 1" "setvar:'tx.inbound_blocking_evaluated=1',setvar:'tx.outbound_early_blocking_evaluated=1',setvar:'tx.outbound_blocking_evaluated=1'"

# always check threshold in phase 2
SecRule TX:BLOCKING_INBOUND_ANOMALY_SCORE "@ge %{tx.inbound_anomaly_score_threshold}" \
SecAction \
"id:949110,\
phase:2,\
deny,\
t:none,\
msg:'Inbound Anomaly Score Exceeded (Total Score: %{TX.BLOCKING_INBOUND_ANOMALY_SCORE})',\
tag:'anomaly-evaluation',\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.0.1-dev'"
ver:'OWASP_CRS/4.0.1-dev',\
setvar:'tx.inbound_blocking_evaluated=1',\
chain"
SecRule TX:BLOCKING_INBOUND_ANOMALY_SCORE "@ge %{tx.inbound_anomaly_score_threshold}" "setvar:'tx.outbound_early_blocking_evaluated=1',setvar:'tx.outbound_blocking_evaluated=1'"
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SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 1" "id:949011,phase:1,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.0.1-dev',skipAfter:END-REQUEST-949-BLOCKING-EVALUATION"
SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 1" "id:949012,phase:2,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.0.1-dev',skipAfter:END-REQUEST-949-BLOCKING-EVALUATION"
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14 changes: 10 additions & 4 deletions rules/RESPONSE-959-BLOCKING-EVALUATION.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -219,7 +219,7 @@ SecRule TX:DETECTION_PARANOIA_LEVEL "@ge 4" \
#

# if early blocking is active, check threshold in phase 3
SecRule TX:BLOCKING_OUTBOUND_ANOMALY_SCORE "@ge %{tx.outbound_anomaly_score_threshold}" \
SecAction \
"id:959101,\
phase:3,\
deny,\
Expand All @@ -228,19 +228,25 @@ SecRule TX:BLOCKING_OUTBOUND_ANOMALY_SCORE "@ge %{tx.outbound_anomaly_score_thre
tag:'anomaly-evaluation',\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.0.1-dev',\
setvar:'tx.outbound_early_blocking_evaluated=1',\
chain"
SecRule TX:EARLY_BLOCKING "@eq 1"
SecRule TX:BLOCKING_OUTBOUND_ANOMALY_SCORE "@ge %{tx.outbound_anomaly_score_threshold}" \
"chain"
SecRule TX:EARLY_BLOCKING "@eq 1" "setvar:'tx.outbound_blocking_evaluated=1'"

# always check threshold in phase 4
SecRule TX:BLOCKING_OUTBOUND_ANOMALY_SCORE "@ge %{tx.outbound_anomaly_score_threshold}" \
SecAction \
"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/4.0.1-dev'"
ver:'OWASP_CRS/4.0.1-dev',\
setvar:'tx.outbound_blocking_evaluated=1',\
chain"
SecRule TX:BLOCKING_OUTBOUND_ANOMALY_SCORE "@ge %{tx.outbound_anomaly_score_threshold}"

SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 1" "id:959011,phase:3,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.0.1-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/4.0.1-dev',skipAfter:END-RESPONSE-959-BLOCKING-EVALUATION"
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9 changes: 9 additions & 0 deletions rules/RESPONSE-980-CORRELATION.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,15 @@
# -= Paranoia Level 0 (empty) =- (apply unconditionally)
#

SecRule TX:inbound_early_blocking_evaluated|TX:inbound_blocking_evaluated|TX:outbound_early_blocking_evaluated|TX:outbound_blocking_evaluated "@eq 0" \
"id:980098,\
phase:5,\
pass,\
t:none,\
msg:'ATTENTION, FIREWALL IS DISABLED!!! At least one of the blocking evaluation rules was not executed (Inbound early blocking evaluated: %{tx.inbound_early_blocking_evaluated}, inbound blocking evaluated: %{tx.inbound_blocking_evaluated}, outbound early blocking evaluated: %{tx.outbound_early_blocking_evaluated}, outbound blocking evaluated: %{tx.outbound_blocking_evaluated})',\
tag:'OWASP_CRS',\
ver:'OWASP_CRS/4.0.1-dev'"

# Combine inbound and outbound scores
SecAction \
"id:980099,\
Expand Down