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# ------------------------------------------------------------------------
# OWASP ModSecurity Core Rule Set ver.3.4.0-dev
# Copyright (c) 2006-2020 Trustwave and contributors. All rights reserved.
# Copyright (c) 2021 Core Rule Set project. All rights reserved.
#
# The OWASP ModSecurity Core Rule Set is distributed under
# Apache Software License (ASL) version 2
# Please see the enclosed LICENSE file for full details.
# ------------------------------------------------------------------------
#
# RFI Attacks
#
#
# -= Paranoia Level 0 (empty) =- (apply unconditionally)
#
SecRule TX:EXECUTING_PARANOIA_LEVEL "@lt 1" "id:931011,phase:1,pass,nolog,skipAfter:END-REQUEST-931-APPLICATION-ATTACK-RFI"
SecRule TX:EXECUTING_PARANOIA_LEVEL "@lt 1" "id:931012,phase:2,pass,nolog,skipAfter:END-REQUEST-931-APPLICATION-ATTACK-RFI"
#
# -= Paranoia Level 1 (default) =- (apply only when tx.executing_paranoia_level is sufficiently high: 1 or higher)
#
# -=[ Rule Logic ]=-
# These rules look for common types of Remote File Inclusion (RFI) attack methods.
# - URL Contains an IP Address
# - The PHP "include()" Function
# - RFI Data Ends with Question Mark(s) (?)
# - RFI Host Doesn't Match Local Host
#
# -=[ References ]=-
# http://projects.webappsec.org/Remote-File-Inclusion
# http://tacticalwebappsec.blogspot.com/2009/06/generic-remote-file-inclusion-attack.html
#
SecRule ARGS "@rx ^(?i:file|ftps?|https?)://(?:\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})" \
"id:931100,\
phase:2,\
block,\
capture,\
t:none,\
msg:'Possible Remote File Inclusion (RFI) Attack: URL Parameter using IP Address',\
logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\
tag:'application-multi',\
tag:'language-multi',\
tag:'platform-multi',\
tag:'attack-rfi',\
tag:'paranoia-level/1',\
tag:'OWASP_CRS',\
tag:'capec/1000/152/175/253',\
ctl:auditLogParts=+E,\
ver:'OWASP_CRS/3.4.0-dev',\
severity:'CRITICAL',\
setvar:'tx.rfi_score=+%{tx.critical_anomaly_score}',\
setvar:'tx.anomaly_score_pl1=+%{tx.critical_anomaly_score}'"
SecRule QUERY_STRING|REQUEST_BODY "@rx (?i)(?:\binclude\s*\([^)]*|mosConfig_absolute_path|_CONF\[path\]|_SERVER\[DOCUMENT_ROOT\]|GALLERY_BASEDIR|path\[docroot\]|appserv_root|config\[root_dir\])=(?:file|ftps?|https?)://" \
"id:931110,\
phase:2,\
block,\
capture,\
t:none,t:urlDecodeUni,\
msg:'Possible Remote File Inclusion (RFI) Attack: Common RFI Vulnerable Parameter Name used w/URL Payload',\
logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\
tag:'application-multi',\
tag:'language-multi',\
tag:'platform-multi',\
tag:'attack-rfi',\
tag:'paranoia-level/1',\
tag:'OWASP_CRS',\
tag:'capec/1000/152/175/253',\
ctl:auditLogParts=+E,\
ver:'OWASP_CRS/3.4.0-dev',\
severity:'CRITICAL',\
setvar:'tx.rfi_score=+%{tx.critical_anomaly_score}',\
setvar:'tx.anomaly_score_pl1=+%{tx.critical_anomaly_score}'"
SecRule ARGS "@rx ^(?i:file|ftps?|https?).*?\?+$" \
"id:931120,\
phase:2,\
block,\
capture,\
t:none,\
msg:'Possible Remote File Inclusion (RFI) Attack: URL Payload Used w/Trailing Question Mark Character (?)',\
logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\
tag:'application-multi',\
tag:'language-multi',\
tag:'platform-multi',\
tag:'attack-rfi',\
tag:'paranoia-level/1',\
tag:'OWASP_CRS',\
tag:'capec/1000/152/175/253',\
ctl:auditLogParts=+E,\
ver:'OWASP_CRS/3.4.0-dev',\
severity:'CRITICAL',\
setvar:'tx.rfi_score=+%{tx.critical_anomaly_score}',\
setvar:'tx.anomaly_score_pl1=+%{tx.critical_anomaly_score}'"
SecRule TX:EXECUTING_PARANOIA_LEVEL "@lt 2" "id:931013,phase:1,pass,nolog,skipAfter:END-REQUEST-931-APPLICATION-ATTACK-RFI"
SecRule TX:EXECUTING_PARANOIA_LEVEL "@lt 2" "id:931014,phase:2,pass,nolog,skipAfter:END-REQUEST-931-APPLICATION-ATTACK-RFI"
#
# -= Paranoia Level 2 =- (apply only when tx.executing_paranoia_level is sufficiently high: 2 or higher)
#
SecRule ARGS "@rx ^(?i:file|ftps?|https?)://([^/]*).*$" \
"id:931130,\
phase:2,\
block,\
capture,\
t:none,\
msg:'Possible Remote File Inclusion (RFI) Attack: Off-Domain Reference/Link',\
logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\
tag:'application-multi',\
tag:'language-multi',\
tag:'platform-multi',\
tag:'attack-rfi',\
tag:'OWASP_CRS',\
tag:'capec/1000/152/175/253',\
tag:'paranoia-level/2',\
ctl:auditLogParts=+E,\
ver:'OWASP_CRS/3.4.0-dev',\
severity:'CRITICAL',\
setvar:'tx.rfi_parameter_%{MATCHED_VAR_NAME}=.%{tx.1}',\
chain"
SecRule TX:/rfi_parameter_.*/ "!@endsWith .%{request_headers.host}" \
"setvar:'tx.rfi_score=+%{tx.critical_anomaly_score}',\
setvar:'tx.anomaly_score_pl2=+%{tx.critical_anomaly_score}'"
SecRule TX:EXECUTING_PARANOIA_LEVEL "@lt 3" "id:931015,phase:1,pass,nolog,skipAfter:END-REQUEST-931-APPLICATION-ATTACK-RFI"
SecRule TX:EXECUTING_PARANOIA_LEVEL "@lt 3" "id:931016,phase:2,pass,nolog,skipAfter:END-REQUEST-931-APPLICATION-ATTACK-RFI"
#
# -= Paranoia Level 3 =- (apply only when tx.executing_paranoia_level is sufficiently high: 3 or higher)
#
SecRule TX:EXECUTING_PARANOIA_LEVEL "@lt 4" "id:931017,phase:1,pass,nolog,skipAfter:END-REQUEST-931-APPLICATION-ATTACK-RFI"
SecRule TX:EXECUTING_PARANOIA_LEVEL "@lt 4" "id:931018,phase:2,pass,nolog,skipAfter:END-REQUEST-931-APPLICATION-ATTACK-RFI"
#
# -= Paranoia Level 4 =- (apply only when tx.executing_paranoia_level is sufficiently high: 4 or higher)
#
#
# -= Paranoia Levels Finished =-
#
SecMarker "END-REQUEST-931-APPLICATION-ATTACK-RFI"