# ------------------------------------------------------------------------ # OWASP ModSecurity Core Rule Set ver.3.3.9 # Copyright (c) 2006-2020 Trustwave and contributors. All rights reserved. # Copyright (c) 2021-2026 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/3.3.9',\ 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/3.3.9',\ 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?).*?\?+$" \ "id:931120,\ phase:2,\ block,\ capture,\ t:none,\ msg:'Possible Remote File Inclusion (RFI) Attack: URL Payload Used w/Trailing Question Mark Character (?)',\ logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}: %{MATCHED_VAR}',\ tag:'application-multi',\ tag:'language-multi',\ tag:'platform-multi',\ tag:'attack-rfi',\ tag:'paranoia-level/1',\ tag:'OWASP_CRS',\ tag:'capec/1000/152/175/253',\ ctl:auditLogParts=+E,\ ver:'OWASP_CRS/3.3.9',\ severity:'CRITICAL',\ setvar:'tx.rfi_score=+%{tx.critical_anomaly_score}',\ setvar:'tx.anomaly_score_pl1=+%{tx.critical_anomaly_score}'" SecRule TX:EXECUTING_PARANOIA_LEVEL "@lt 2" "id:931013,phase:1,pass,nolog,skipAfter:END-REQUEST-931-APPLICATION-ATTACK-RFI" SecRule TX:EXECUTING_PARANOIA_LEVEL "@lt 2" "id:931014,phase:2,pass,nolog,skipAfter:END-REQUEST-931-APPLICATION-ATTACK-RFI" # # -= Paranoia Level 2 =- (apply only when tx.executing_paranoia_level is sufficiently high: 2 or higher) # SecRule ARGS "@rx ^(?i:file|ftps?|https?)://([^/]*).*$" \ "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',\ ver:'OWASP_CRS/3.3.9',\ severity:'CRITICAL',\ setvar:'tx.rfi_parameter_%{MATCHED_VAR_NAME}=.%{tx.1}',\ chain" SecRule TX:/rfi_parameter_.*/ "!@endsWith .%{request_headers.host}" \ "ctl:auditLogParts=+E,\ 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"