# ------------------------------------------------------------------------
# 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.
# ------------------------------------------------------------------------

#
# -= Paranoia Level 0 (empty) =- (apply unconditionally)
#

# Skip all rules if RESPONSE_BODY is compressed.
SecRule RESPONSE_HEADERS:Content-Encoding "@pm gzip compress deflate br zstd" \
    "id:954010,\
    phase:4,\
    pass,\
    nolog,\
    tag:'OWASP_CRS',\
    tag:'OWASP_CRS/DATA-LEAKAGES-IIS',\
    ver:'OWASP_CRS/4.17.0-dev',\
    skipAfter:END-RESPONSE-954-DATA-LEAKAGES-IIS"

SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 1" "id:954011,phase:3,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-954-DATA-LEAKAGES-IIS"
SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 1" "id:954012,phase:4,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-954-DATA-LEAKAGES-IIS"
#
# -= Paranoia Level 1 (default) =- (apply only when tx.detection_paranoia_level is sufficiently high: 1 or higher)
#

# IIS default location
SecRule RESPONSE_BODY "@rx (?i)[a-z]:[\x5c/]inetpub\b" \
    "id:954100,\
    phase:4,\
    block,\
    capture,\
    t:none,\
    msg:'Disclosure of IIS install location',\
    logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}',\
    tag:'application-multi',\
    tag:'language-multi',\
    tag:'platform-iis',\
    tag:'platform-windows',\
    tag:'attack-disclosure',\
    tag:'paranoia-level/1',\
    tag:'OWASP_CRS',\
    tag:'OWASP_CRS/DATA-LEAKAGES-IIS',\
    tag:'capec/1000/118/116',\
    ver:'OWASP_CRS/4.17.0-dev',\
    severity:'ERROR',\
    setvar:'tx.outbound_anomaly_score_pl1=+%{tx.error_anomaly_score}'"

SecRule RESPONSE_BODY "@rx (?:Microsoft OLE DB Provider for SQL Server(?:</font>.{1,20}?error '800(?:04005|40e31)'.{1,40}?Timeout expired| \(0x80040e31\)<br>Timeout expired<br>)|<h1>internal server error</h1>.*?<h2>part of the server has crashed or it has a configuration error\.</h2>|cannot connect to the server: timed out)" \
    "id:954110,\
    phase:4,\
    block,\
    capture,\
    t:none,\
    msg:'Application Availability Error',\
    logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}',\
    tag:'application-multi',\
    tag:'language-multi',\
    tag:'platform-iis',\
    tag:'platform-windows',\
    tag:'attack-disclosure',\
    tag:'paranoia-level/1',\
    tag:'OWASP_CRS',\
    tag:'OWASP_CRS/DATA-LEAKAGES-IIS',\
    tag:'capec/1000/118/116',\
    tag:'PCI/6.5.6',\
    ver:'OWASP_CRS/4.17.0-dev',\
    severity:'ERROR',\
    setvar:'tx.outbound_anomaly_score_pl1=+%{tx.error_anomaly_score}'"

#
# IIS Errors leakage
#
SecRule RESPONSE_BODY "@pmFromFile iis-errors.data" \
    "id:954120,\
    phase:4,\
    block,\
    capture,\
    t:none,\
    msg:'IIS Information Leakage',\
    logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}',\
    tag:'application-multi',\
    tag:'language-multi',\
    tag:'platform-iis',\
    tag:'platform-windows',\
    tag:'attack-disclosure',\
    tag:'paranoia-level/1',\
    tag:'OWASP_CRS',\
    tag:'OWASP_CRS/DATA-LEAKAGES-IIS',\
    tag:'capec/1000/118/116',\
    tag:'PCI/6.5.6',\
    ver:'OWASP_CRS/4.17.0-dev',\
    severity:'ERROR',\
    setvar:'tx.outbound_anomaly_score_pl1=+%{tx.error_anomaly_score}'"


SecRule RESPONSE_STATUS "!@rx ^404$" \
    "id:954130,\
    phase:4,\
    block,\
    capture,\
    t:none,\
    msg:'IIS Information Leakage',\
    logdata:'Matched Data: %{TX.0} found within %{MATCHED_VAR_NAME}',\
    tag:'application-multi',\
    tag:'language-multi',\
    tag:'platform-iis',\
    tag:'platform-windows',\
    tag:'attack-disclosure',\
    tag:'paranoia-level/1',\
    tag:'OWASP_CRS',\
    tag:'OWASP_CRS/DATA-LEAKAGES-IIS',\
    tag:'capec/1000/118/116',\
    tag:'PCI/6.5.6',\
    ver:'OWASP_CRS/4.17.0-dev',\
    severity:'ERROR',\
    chain"
    SecRule RESPONSE_BODY "@rx \bServer Error in.{0,50}?\bApplication\b" \
        "capture,\
        t:none,\
        setvar:'tx.outbound_anomaly_score_pl1=+%{tx.error_anomaly_score}'"



SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 2" "id:954013,phase:3,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-954-DATA-LEAKAGES-IIS"
SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 2" "id:954014,phase:4,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-954-DATA-LEAKAGES-IIS"
#
# -= Paranoia Level 2 =- (apply only when tx.detection_paranoia_level is sufficiently high: 2 or higher)
#



SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 3" "id:954015,phase:3,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-954-DATA-LEAKAGES-IIS"
SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 3" "id:954016,phase:4,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-954-DATA-LEAKAGES-IIS"
#
# -= Paranoia Level 3 =- (apply only when tx.detection_paranoia_level is sufficiently high: 3 or higher)
#



SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 4" "id:954017,phase:3,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-954-DATA-LEAKAGES-IIS"
SecRule TX:DETECTION_PARANOIA_LEVEL "@lt 4" "id:954018,phase:4,pass,nolog,tag:'OWASP_CRS',ver:'OWASP_CRS/4.17.0-dev',skipAfter:END-RESPONSE-954-DATA-LEAKAGES-IIS"
#
# -= Paranoia Level 4 =- (apply only when tx.detection_paranoia_level is sufficiently high: 4 or higher)
#



#
# -= Paranoia Levels Finished =-
#
SecMarker "END-RESPONSE-954-DATA-LEAKAGES-IIS"