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modsecurity_plugins_configmap.yaml
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apiVersion: v1
kind: ConfigMap
metadata:
labels:
grafana_dashboard: "1"
name: modsecurity-plugins
data:
empty-after.conf: |
# no data
empty-before.conf: |
# no data
empty-config.conf: |
# no data
argocd-rule-exclusions-before.conf: |
# -------------------------------------------------------------------------
# allow deletions from the argocd web ui
# TODO: can maybe prune the methods here a bit more
# -------------------------------------------------------------------------
SecRule REQUEST_FILENAME "@beginsWith /api/v1/applications/" \
"id:30005,\
phase:1,\
ver:'argocd-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
setvar:'tx.allowed_methods=GET HEAD POST PUT DELETE'"
SecRule REQUEST_FILENAME "@beginsWith /api/v1/projects/" \
"id:30007,\
phase:1,\
ver:'argocd-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
setvar:'tx.allowed_methods=GET HEAD POST PUT DELETE',\
ctl:ruleRemoveTargetById=930120;ARGS:json.project.spec.sourceRepos.array_1,\
ctl:ruleRemoveTargetById=930120;ARGS:json.project.spec.sourceRepos.array_2,\
ctl:ruleRemoveTargetById=930120;ARGS:json.project.spec.sourceRepos.array_3,\
ctl:ruleRemoveTargetById=930120;ARGS:json.project.spec.sourceRepos.array_5,\
ctl:ruleRemoveTargetById=930120;ARGS:json.project.spec.sourceRepos.array_6,\
ctl:ruleRemoveTargetById=930120;ARGS:json.project.metadata.annotations.kubectl.kubernetes.io/last-applied-configuration"
grafana-rule-exclusions-before.conf: |-
# -------------------------------------------------------------------------
# allow exceptions for rules 933210, 942100, 932110 for using datasources
# loki and prometheus via grafana, should try to make these more granular later
# -------------------------------------------------------------------------
# needs tuning
# for catching grafana QL passed as ARGS:json.queries.array_0.expr in grafana
SecRule REQUEST_URI "@beginsWith /api/ds/query?ds_type" \
"id:20013,\
phase:1,\
ver:'grafana-rule-exclusions-plugin/1.0.0',\
pass,\
nolog,\
ctl:ruleRemoveTargetById=932125;ARGS:json.queries.array_0.expr,\
ctl:ruleRemoveTargetById=942100;ARGS:json.queries.array_0.expr,\
ctl:ruleRemoveById=933210,ctl:ruleRemoveById=942100,ctl:ruleRemoveById=932110"
# for catching grafana QL passed as ARGS:json.queries.array_0.expr in grafana
SecRule REQUEST_URI "@beginsWith /api/query-history" \
"id:20030,\
phase:1,\
ver:'grafana-rule-exclusions-plugin/1.0.0',\
pass,\
nolog,\
ctl:ruleRemoveTargetById=932125;ARGS:json.queries.array_0.expr"
# needs tuning
SecRule REQUEST_URI "@beginsWith /api/datasources/uid/prometheus/resources/api/v1/label" \
"id:20017,\
phase:1,\
pass,\
ver:'grafana-rule-exclusions-plugin/1.0.0',\
nolog,\
ctl:ruleRemoveById=932110"
# this avoids issues when users change the default dashboard view
SecRule REQUEST_URI "@rx /api/user/helpflags/.*$" \
"id:20012,\
phase:1,\
ver:'grafana-rule-exclusions-plugin/1.0.0',\
pass,\
nolog,\
setvar:'tx.allowed_methods=PUT'"
# this is for when a user tries to hit the explore link in a prometheus alert link
SecRule REQUEST_URI "@beginsWith /explore?orgId=" \
"id:20029,\
phase:1,\
ver:'grafana-rule-exclusions-plugin/1.0.0',\
pass,\
nolog,\
ctl:ruleRemoveTargetById=932125;ARGS:left"
home-assistant-rule-exclusions-before.conf: |
# -------------------------------------------------------------------------
# home assistant rule exclusions
# -------------------------------------------------------------------------
# allow content type of text/plain, but process the body as JSON
SecRule REQUEST_URI "@beginsWith /auth/login_flow" \
"id:20023,\
phase:1,\
ver:'home-assistant-rule-exclusions-plugin/1.0.0',\
pass,\
nolog,\
t:none,\
ctl:requestBodyProcessor=JSON,\
setvar:'tx.allowed_request_content_type=|text/plain|'"
# Allow PUT method to login endpoint
SecRule REQUEST_URI "@beginsWith /auth/login_flow" \
"id:20024,\
phase:1,\
ver:'home-assistant-rule-exclusions-plugin/1.0.0',\
pass,\
nolog,\
t:none,\
setvar:'tx.allowed_methods=PUT POST DELETE'"
# this is a legit endpoint for home assistant for some reason
SecRule REQUEST_URI "@rx /frontend_latest/.*.js$" \
"id:20025,\
phase:1,\
ver:'home-assistant-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
ctl:ruleRemoveById=930130"
# register sensor
SecRule REQUEST_URI "@beginsWith /api/webhook/" \
"id:20033,\
phase:1,\
ver:'home-assistant-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
ctl:ruleRemoveTargetById=933150;ARGS:json.data.unique_id"
matrix-rule-exclusions-before.conf: |-
# -------------------------------------------------------------------------
# allow uploads for matrix via element web and mobile
# to avoid rule 920420 which doesn't allow |application/octet-stream|
# -------------------------------------------------------------------------
# allow octet-stream content type for uploads
# url should be like /_matrix/media/v3/upload or /_matrix/media/r0/upload
SecRule REQUEST_URI "@rx ^/_matrix/media/(?:v3|r0)/upload.*$" \
"id:20015,\
phase:1,\
ver:'matrix-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
setvar:'tx.allowed_request_content_type=|application/octet-stream| |image/jpeg| |image/png| |image/gif|'"
# allow PUT, OPTIONS to allow uploads
# url should be like /_matrix/media/v3/upload or /_matrix/media/r0/upload
SecRule REQUEST_URI "@rx ^/_matrix/media/(?:v3|r0)/upload.*$" \
"id:20016,\
phase:1,\
ver:'matrix-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
setvar:'tx.allowed_methods=POST PUT OPTIONS'"
# allow PUT, OPTIONS to allow sending all sorts of user/room/device data:
# /_matrix/client/v3/user/username/account_data/im.vector.setting.breadcrumbs
# /_matrix/client/v3/sendToDevice/m.room.encrypted
# /_matrix/client/v3/room_keys/keys?version=1
# /_matrix/client/v3/profile
# /_matrix/client/v3/directory/room/
# /_matrix/client/v3/register
# /_matrix/client/v3/pushrules/global/room
SecRule REQUEST_URI "@rx ^/_matrix/client/(?:v3|r0)/(?:rooms|user|devices|account|pushrules|profile|sendToDevice|room_keys|register|directory)/.*$" \
"id:20018,\
phase:1,\
ver:'matrix-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
setvar:'tx.allowed_methods=GET POST PUT DELETE OPTIONS'"
# allow updating presense indicator
SecRule REQUEST_URI "@beginsWith /_matrix/client/r0/presence/" \
"id:20040,\
phase:1,\
ver:'matrix-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
setvar:'tx.allowed_methods=PUT'"
# allow creating new rooms
SecRule REQUEST_URI "@rx ^/_matrix/client/(?:v3|r0)/createRoom$" \
"id:20032,\
phase:1,\
ver:'matrix-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
ctl:ruleRemoveTargetById=933150;ARGS_NAMES:json.is_direct"
# allow prometheus alerts to be posted
# also allows key verification with weird keys
# /_matrix/client/r0/rooms/.*/send/m.room.message/.*
SecRule REQUEST_URI "@rx ^/_matrix/client/(?:v3|r0)/rooms/.*/send/m.room.message/.*$" \
"id:20027,\
phase:1,\
ver:'matrix-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
ctl:ruleRemoveById=920420,\
ctl:ruleRemoveTargetById=933210;ARGS:json.formatted_body,\
ctl:ruleRemoveTargetById=930120;ARGS:json.formatted_body"
# also allow edits to messages in encrypted rooms
# /_matrix/client/r0/rooms/.*/send/m.room.encrypted/.*
SecRule REQUEST_URI "@rx ^/_matrix/client/(?:v3|r0)/rooms/.*/send/m.room.encrypted/.*$" \
"id:20034,\
phase:1,\
ver:'matrix-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
ctl:ruleRemoveTargetById=933150;ARGS:json.ciphertext"
# allow users to push up their keys from mobile or desktop
# /_matrix/client/r0/pushers/set
SecRule REQUEST_URI "@rx ^/_matrix/client/(?:r0|v3)/pushers/set$" \
"id:20026,\
phase:1,\
ver:'matrix-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
ctl:ruleRemoveTargetById=930120;ARGS_NAMES:json.profile_tag"
# allows mautrix bridges to send things like:
# "Unknown command, use the `help` command for help."
# or
# "This is your management room: prefixing commands with `!discord` is not required.\n"
# which are responses from a bridge bot to a matrix user with admin access to the bot
SecRule REQUEST_URI "@rx ^/_matrix/client/(?:v3|r0)/rooms/.*/send/m.room.message/mautrix-go_.*$"\
"id:20019,\
phase:1,\
ver:'matrix-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
ctl:ruleRemoveTargetById=942190;ARGS:json.body,\
ctl:ruleRemoveTargetById=942360;ARGS:json.body,\
ctl:ruleRemoveTargetById=932100;ARGS:json.body"
# allow PUT, OPTIONS to allow sending room key data:
# /_matrix/client/unstable/room_keys/keys?version=1
SecRule REQUEST_URI "@beginsWith /_matrix/client/unstable/room_keys/keys" \
"id:20020,\
phase:1,\
ver:'matrix-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
setvar:'tx.allowed_methods=GET POST PUT DELETE OPTIONS',\
ctl:ruleRemoveById=930120"
# this is for users forwarding room keys
# /_matrix/client/v3/room_keys/keys?version=1
SecRule REQUEST_URI "@rx ^/_matrix/client/(?:v3|r0)/room_keys/keys.*$" \
"id:20031,\
phase:1,\
ver:'matrix-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
ctl:ruleRemoveById=930120"
# allow PUT method for sending read recipets
SecRule REQUEST_URI "@beginsWith /_matrix/federation/v1/send/" \
"id:20021,\
phase:1,\
ver:'matrix-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
setvar:'tx.allowed_methods=GET POST PUT OPTIONS'"
# this is actually for a local s3 server that you have dedicated to matrix
# can be commented out if not running local s3 server such as seaweedfs
# /matrix/local_thumbnails/.*/32-32-image-jpeg-crop
SecRule REQUEST_URI "@rx ^/matrix/(?:local_thumbnails|local_content)/.*$" \
"id:20022,\
phase:1,\
ver:'matrix-rule-exclusions-plugin/1.0.0',\
pass,\
nolog,\
t:none,\
setvar:'tx.allowed_methods=GET HEAD POST PUT'"
SecRule REQUEST_URI "@rx ^/matrix/local_content/.*$" \
"id:20028,\
phase:1,\
ver:'matrix-rule-exclusions-plugin/1.0.0',\
pass,\
nolog,\
t:none,\
ctl:ruleRemoveById=920340"
postgres-s3-rule-exclusions-before.conf: |-
# -------------------------------------------------------------------------
# allow postgresql to upload wal archives to s3
# allow PUT, DELETE, and POST methods for base backups
# -------------------------------------------------------------------------
SecRule REQUEST_URI "@rx ^/(?:matrix|zitadel|nextcloud)-postgres/(?:matrix|zitadel|nextcloud)-postgres/(?:wals|base)/.*$" \
"id:20000,\
phase:1,\
ver:'postgres-rule-exclusions-plugin/1.0.0',\
pass,\
nolog,\
t:none,\
ctl:ruleRemoveById=920340,\
ctl:ruleRemoveById=921110,\
ctl:ruleRemoveById=920440,\
setvar:'tx.allowed_methods=DELETE GET POST HEAD PUT'"
zitadel-rule-exclusions-before.conf: |
# Enable grpc parsing for zitadle only, avoids hitting ruleID 920420"
SecRule REQUEST_URI "@beginsWith /zitadel.auth.v1.AuthService" \
"id:30001,\
phase:1,\
ver:'zitadel-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
setvar:'tx.allowed_request_content_type=|application/grpc-web+proto|'"
SecRule REQUEST_URI "@beginsWith /zitadel.admin.v1.AdminService" \
"id:30002,\
phase:1,\
ver:'zitadel-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
setvar:'tx.allowed_request_content_type=|application/grpc-web+proto|'"
SecRule REQUEST_URI "@beginsWith /zitadel.management.v1.ManagementService" \
"id:30003,\
ver:'zitadel-rule-exclusions-plugin/1.0.0',\
phase:1,\
pass,\
t:none,\
nolog,\
setvar:'tx.allowed_request_content_type=|application/grpc-web+proto|'"
# zitadel sends a __Host-zitadel.useragent cookie that sometimes has a = in it
SecRuleUpdateTargetById 941120 "!REQUEST_COOKIES:__Host-zitadel.useragent"
nextcloud-rule-exclusions-before.conf: |-
# Gadgetbridge.db is a valid backup file
SecRule REQUEST_URI "@rx ^/index.php/apps/files/api/v1/thumbnail/[0-9]+/[0-9]+/Gadgetbridge.db$" \
"id:30004,\
phase:1,\
ver:'nextcloud-small-hack-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
ctl:ruleRemoveTargetById=920440;TX:EXTENSION"
# to allow occ federation:sync-addressbook
SecRule REQUEST_URI "@beginsWith /ocm/shares" \
"id:30006,\
phase:1,\
ver:'nextcloud-small-hack-rule-exclusions-plugin/1.0.0',\
pass,\
t:none,\
nolog,\
setvar:'tx.allowed_methods=GET HEAD POST PUT DELETE'"
# ------------------------------------------------------------------------
# OWASP CRS Plugin
# Copyright (c) 2021-2024 CRS project. All rights reserved.
#
# The OWASP CRS plugins are distributed under
# Apache Software License (ASL) version 2
# Please see the enclosed LICENSE file for full details.
# ------------------------------------------------------------------------
# OWASP CRS Plugin
# Plugin name: nextcloud-rule-exclusions
# Plugin description:
# Rule ID block base: 9,508,000 - 9,508,999
# Plugin version: 1.2.0
# Documentation can be found here:
# https://github.com/coreruleset/nextcloud-rule-exclusions-plugin
# Generic rule to disable plugin
SecRule TX:nextcloud-rule-exclusions-plugin_enabled "@eq 0" "id:9508099,phase:1,pass,nolog,ctl:ruleRemoveById=9508100-9508999"
# These exclusions remedy false positives in a default Nextcloud install.
# They will likely work with OwnCloud too, but you may have to modify them.
#
# To relax upload restrictions for only the php files that need it,
# you put something like this in crs-setup.conf:
#
# SecRule REQUEST_FILENAME "@rx /(?:remote\.php|index\.php)/" \
# "id:9508600,\
# phase:2,\
# t:none,\
# nolog,\
# pass,\
# ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
# setvar:'tx.restricted_extensions=.bak/ .config/ .conf/'"
#
#
# ctl:requestBodyLimit is not supported in libmodsecurity3, Nginx users can increase max upload size
# by using the following:
# location /index.php/apps/files/ajax/upload.php { modsecurity_rules 'SecRequestBodyLimit 1073741824'; }
#
# Apache libmodsecurity3 Example:
# <location "/index.php/apps/files/ajax/upload.php">
# modsecurity_rules 'SecRequestBodyLimit 1073741824'
# </location>
#
#
# The Nextcloud desktop client occasionally sends large request bodies not containing any uploaded files.
# ModSecurity will block request bodies larger than 131KB, adjusting SecRequestBodyNoFilesLimit to
# 141KB works for all scenarios tested.
#
# Nginx libmodsecurity3 Example:
# location /remote.php/dav/files/ { modsecurity_rules 'SecRequestBodyNoFilesLimit 144384'; }
#
# Apache modsecurity2 Example:
# <location "/remote.php/dav/files/">
# SecRequestBodyNoFilesLimit 144384
# </location>
#
# Apache libmodsecurity3 Example:
# <location "/remote.php/dav/files/">
# modsecurity_rules 'SecRequestBodyNoFilesLimit 144384'
# </location>
# [ Local CRS initialization ]
#
# We need to initialize some of the CRS variables also here because plugin setup runs before
# CRS initialization (this is a known limitation of the current plugin architecture). Must be
# kept in sync with CRS default setting.
# Copy of CRS rule 901160.
SecRule &TX:allowed_methods "@eq 0" \
"id:9508100,\
phase:1,\
pass,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
setvar:'tx.allowed_methods=GET HEAD POST OPTIONS'"
# Copy of CRS rule 901162.
SecRule &TX:allowed_request_content_type "@eq 0" \
"id:9508101,\
phase:1,\
pass,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
setvar:'tx.allowed_request_content_type=|application/x-www-form-urlencoded| |multipart/form-data| |multipart/related| |text/xml| |application/xml| |application/soap+xml| |application/json| |application/cloudevents+json| |application/cloudevents-batch+json|'"
#
# [ File Manager ]
#
# The web interface uploads files, and interacts with the user.
SecRule REQUEST_FILENAME "@contains /remote.php/webdav" \
"id:9508102,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveById=920420,\
ctl:ruleRemoveById=920440,\
ctl:ruleRemoveById=941000-942999,\
ctl:ruleRemoveById=951000-951999,\
ctl:ruleRemoveById=953100-953130,\
ctl:ruleRemoveByTag=attack-injection-php"
# Skip PUT parsing for invalid encoding / protocol violations in binary files.
SecRule REQUEST_METHOD "@streq PUT" \
"id:9508105,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
chain"
SecRule REQUEST_FILENAME "@rx /remote\.php/(?:webdav|dav)" \
"t:none,\
ctl:ruleRemoveById=921150,\
ctl:ruleRemoveById=930110,\
ctl:ruleRemoveById=930120,\
ctl:ruleRemoveById=920000-920999,\
ctl:ruleRemoveById=932000-932999"
# Fix for Nextcloud Desktop Client / Allow sending source code
SecRule REQUEST_METHOD "@pm PROPFIND PUT" \
"id:9508106,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
chain"
SecRule REQUEST_FILENAME "@rx /remote\.php/(?:webdav|dav/files)" \
"t:none,\
ctl:ruleRemoveById=921110"
# Allow the data type 'text/vcard'
# Allow path traversal characters like /../ in file paths.
# Allow all filetypes.
# Allow source code.
# Allow arbitrary filenames.
# Allow upload of files containing code
SecRule REQUEST_FILENAME "@contains /remote.php/dav/files/" \
"id:9508110,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveById=920440,\
ctl:ruleRemoveById=930100-930110,\
ctl:ruleRemoveById=951000-951999,\
ctl:ruleRemoveById=953100-953130,\
ctl:ruleRemoveTargetById=921110;REQUEST_BODY,\
ctl:ruleRemoveTargetById=933210;REQUEST_FILENAME,\
ctl:ruleRemoveTargetById=944120;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944130;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944240;REQUEST_BODY,\
setvar:'tx.allowed_request_content_type=%{tx.allowed_request_content_type} |text/plain| |text/vcard|'"
# File manager: versioning
# Allow the data type 'text/plain'
# Since the content is actually XML, we switch on the XML parser
SecRule REQUEST_FILENAME "@beginsWith /remote.php/dav/versions/" \
"id:9508111,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
chain"
SecRule REQUEST_HEADERS:Content-Type "@beginsWith text/plain" \
"t:none,\
ctl:requestBodyProcessor=XML,\
setvar:'tx.allowed_request_content_type=%{tx.allowed_request_content_type} |text/plain|'"
# File manager: system tags
# Allow the data type 'text/plain'
# Since the content is actually XML, we switch on the XML parser
SecRule REQUEST_FILENAME "@rx /remote\.php/dav/systemtags(?:-relations/files/[0-9]+|-assigned/image)?/$" \
"id:9508112,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
chain"
SecRule REQUEST_HEADERS:Content-Type "@beginsWith text/plain" \
"t:none,\
ctl:requestBodyProcessor=XML,\
ctl:ruleRemoveTargetById=921110;REQUEST_BODY,\
ctl:ruleRemoveTargetById=920272;REQUEST_BODY,\
ctl:ruleRemoveTargetById=920273;REQUEST_BODY,\
setvar:'tx.allowed_request_content_type=%{tx.allowed_request_content_type} |text/plain|'"
# Allow the data type 'application/octet-stream'
SecRule REQUEST_METHOD "@pm PUT MOVE" \
"id:9508115,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
chain"
SecRule REQUEST_FILENAME "@rx /remote\.php/dav/(?:files|uploads)/" \
"setvar:'tx.allowed_request_content_type=%{tx.allowed_request_content_type} |application/octet-stream| |application/pdf|'"
# Allow data types like video/mp4
SecRule REQUEST_METHOD "@streq PUT" \
"id:9508116,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
chain"
SecRule REQUEST_FILENAME "@rx /(?:public\.php/webdav|remote\.php/dav/uploads)/" \
"t:none,\
ctl:ruleRemoveById=920340,\
ctl:ruleRemoveById=920420"
# Allow REPORT requests without Content-Type header (at least the iOS app does this)
SecRule REQUEST_METHOD "@streq REPORT" \
"id:9508121,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
chain"
SecRule REQUEST_FILENAME "@contains /remote.php/dav/files/" \
"t:none,\
ctl:ruleRemoveById=920340"
# FP when NextCloud default app "Text" detects text files in file manager.
# PUT - When the "Text" app tries to create a session in file manager.
# Opening/creating a text file
# Nextcloud 28 and newer will include the document ID after session
SecRule REQUEST_FILENAME "@rx /apps/text/(?:public/)?session(?:/[0-9]+)?/create$" \
"id:9508122,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
setvar:'tx.allowed_methods=%{tx.allowed_methods} PUT'"
# FP while trying to open text files in file manager
# Adding/editing comments to files
# The content of comments could be anything
SecRule REQUEST_FILENAME "@rx /remote\.php/dav/comments/files(?:/[0-9]+)+$" \
"id:9508123,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveTargetByTag=OWASP_CRS;ARGS:message,\
ctl:ruleRemoveTargetByTag=OWASP_CRS;ARGS:json.message,\
setvar:'tx.allowed_request_content_type=%{tx.allowed_request_content_type} |text/plain|'"
# When trying to change the "Show recommendations" option in file settings
SecRule REQUEST_FILENAME "@endsWith /apps/recommendations/settings/enabled" \
"id:9508124,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
setvar:'tx.allowed_methods=%{tx.allowed_methods} PUT'"
# Autosaving/syncing a text document, content could be anything
# Manually saving a text document
# As of Nextcloud 28, the document ID is included in the URL path
SecRule REQUEST_URI "@rx /apps/text/(?:public/)?session(?:/[0-9]+)?/(?:sync|save)$" \
"id:9508126,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveTargetById=920272;REQUEST_BODY,\
ctl:ruleRemoveTargetById=920273;REQUEST_BODY,\
ctl:ruleRemoveTargetById=921110;REQUEST_BODY,\
ctl:ruleRemoveTargetByTag=OWASP_CRS;ARGS:autosaveContent,\
ctl:ruleRemoveTargetByTag=OWASP_CRS;ARGS:json.autosaveContent"
# Text app content can be anything
# We disable CRS for all ARGS since the paramater keeps on changing and can't be predicted
SecRule REQUEST_FILENAME "@rx /apps/text/(?:public/)?session/push$" \
"id:9508128,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveTargetByTag=OWASP_CRS;ARGS"
# Viewing files within the trashbin
# Content is XML so the XML parser is switched on
SecRule REQUEST_FILENAME "@rx /remote\.php/dav/trashbin/[^/]+/trash/" \
"id:9508170,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
chain"
SecRule REQUEST_HEADERS:Content-Type "@beginsWith text/plain" \
"t:none,\
chain"
SecRule REQUEST_METHOD "@streq PROPFIND" \
"t:none,\
ctl:requestBodyProcessor=XML,\
setvar:'tx.allowed_request_content_type=%{tx.allowed_request_content_type} |text/plain|'"
# Entering a password for a password protected share
SecRule REQUEST_FILENAME "@rx /s/[^/]+/authenticate/showShare$" \
"id:9508171,\
phase:1,\
pass,\
t:none,\
nolog,\
ctl:ruleRemoveTargetByTag=OWASP_CRS;ARGS:password,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0'"
# Sharing a file/folder
# Fix FP when creating a share with a password
SecRule REQUEST_FILENAME "@rx /ocs/v[0-9]\.php/apps/files_sharing/api/v[0-9]/shares(?:/[0-9]+)?$" \
"id:9508172,\
phase:1,\
pass,\
t:none,\
nolog,\
ctl:ruleRemoveTargetById=930120;ARGS:json.path,\
ctl:ruleRemoveTargetById=930120;ARGS:path,\
ctl:ruleRemoveTargetByTag=OWASP_CRS;ARGS:password,\
ctl:ruleRemoveTargetByTag=OWASP_CRS;ARGS:json.password,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
setvar:'tx.allowed_methods=%{tx.allowed_methods} PUT DELETE'"
# Syncing files with Nextcloud desktop app
# Matches:
# - /remote.php/dav/files/username/
# - /remote.php/dav/files/path/to/example.txt (does not assume that
# all files must have an extension)
SecRule REQUEST_FILENAME "@contains /remote.php/dav/files/" \
"id:9508173,\
phase:3,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
chain"
SecRule RESPONSE_STATUS "@rx ^50[023]$" \
"t:none,\
ctl:ruleRemoveById=950100"
# Uploading files to Nextcloud
# This FP is usually triggered when uploading via the mobile app
SecRule REQUEST_FILENAME "@rx /remote\.php/dav/uploads/[^/]+/[a-z0-9]+/[0-9]+$" \
"id:9508174,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveById=920341,\
ctl:ruleRemoveTargetById=921110;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944100;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944110;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944120;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944130;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944200;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944240;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944250;REQUEST_BODY"
# Uploading files in bulk
SecRule REQUEST_FILENAME "@endsWith /remote.php/dav/bulk" \
"id:9508175,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveById=921422,\
ctl:ruleRemoveTargetById=920260;REQUEST_BODY,\
ctl:ruleRemoveTargetById=921110;REQUEST_BODY,\
ctl:ruleRemoveTargetById=931110;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944100;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944110;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944120;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944130;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944240;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944210;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944250;REQUEST_BODY,\
ctl:ruleRemoveTargetById=944260;REQUEST_BODY"
# Uploading files via Windows desktop client
SecRule REQUEST_FILENAME "@rx /remote\.php/dav/uploads/[^/]+/[0-9]+/\.file$" \
"id:9508176,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
chain"
SecRule &REQUEST_HEADERS:if "@eq 1" \
"t:none,\
ctl:ruleRemoveById=920450"
# 200002 will trigger if a request with a content type is sent with an empty request body.
# This typically happens when creating a file/folder in a public share.
SecRule REQUEST_FILENAME "@contains /public.php/dav/files/" \
"id:9508177,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
chain"
SecRule REQUEST_HEADERS:Content-Type "@beginsWith text/plain" \
"t:none,\
chain"
SecRule REQUEST_BODY_LENGTH "@eq 0" \
"t:none,\
ctl:ruleRemoveById=200002"
# When uploading files via public shares, the content type header will be set to whatever file type is being uploaded.
# This rule allows all content types for public shares since it could be anything.
# Rules 920420, 920480, and 920530 should catch any injection attacks on the content-type header.
SecRule REQUEST_FILENAME "@contains /public.php/dav/files/" \
"id:9508178,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveById=920420"
#
# [ Searchengine ]
#
# Nextcloud uses a search field for filename or content queries.
SecRule REQUEST_FILENAME "@contains /index.php/core/search" \
"id:9508125,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveTargetById=941000-942999;ARGS:query,\
ctl:ruleRemoveTargetById=932000-932999;ARGS:query,\
ctl:ruleRemoveTargetByTag=attack-injection-php;ARGS:query"
# Searching for files, folders, contacts, tasks, emails, etc.
SecRule REQUEST_FILENAME "@rx /ocs/v[0-9]\.php/search/providers(?:/[^/]+/search)?$" \
"id:9508132,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveTargetById=920230;ARGS:from,\
ctl:ruleRemoveTargetById=932190;ARGS:from,\
ctl:ruleRemoveTargetById=932200;ARGS:from,\
ctl:ruleRemoveTargetById=942200;ARGS:from,\
ctl:ruleRemoveTargetById=942210;ARGS:from,\
ctl:ruleRemoveTargetById=942430;ARGS:from,\
ctl:ruleRemoveTargetById=942440;ARGS:from"
#
# [ DAV ]
#
# Nextcloud uses DAV methods with index.php and remote.php to do many things
# The default ones in ModSecurity are: GET HEAD POST OPTIONS
#
# Looking through the code, and via testing, I found these:
#
# File manager: PUT DELETE MOVE PROPFIND PROPPATCH
# Calendars: REPORT
# Others in the code or js files: PATCH MKCOL MOVE TRACE
# Others that I added just in case, and they seem related:
# CHECKOUT COPY LOCK MERGE MKACTIVITY UNLOCK.
SecRule REQUEST_FILENAME "@rx /(?:remote|index|public)\.php/" \
"id:9508130,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
setvar:'tx.allowed_methods=%{tx.allowed_methods} PUT PATCH CHECKOUT COPY DELETE LOCK MERGE MKACTIVITY MKCOL MOVE PROPFIND PROPPATCH SEARCH UNLOCK REPORT TRACE jsonp'"
# Allow CalDav/CarDav clients to scan for CalDav CarDav path
SecRule REQUEST_FILENAME "@streq /" \
"id:9508131,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveTargetById=921110;REQUEST_BODY,\
setvar:'tx.allowed_methods=%{tx.allowed_methods} PROPFIND'"
#
# [ Preview and Thumbnails ]
#
# Preview
SecRule REQUEST_FILENAME "@contains /index.php/core/preview.png" \
"id:9508150,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveTargetById=932150;ARGS:file"
# Filepreview for trashbin
SecRule REQUEST_FILENAME "@contains /index.php/apps/files_trashbin/ajax/preview.php" \
"id:9508155,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveTargetById=932150;ARGS:file,\
ctl:ruleRemoveTargetById=942190;ARGS:file"
#
# [ Ownnote ]
#
SecRule REQUEST_FILENAME "@contains /index.php/apps/ownnote/" \
"id:9508300,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveById=941150"
#
# [ Text Editor ]
#
# This file can save anything, and it's name could be lots of things.
SecRule REQUEST_FILENAME "@contains /index.php/apps/files_texteditor/" \
"id:9508310,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveTargetById=920370-920390;ARGS:filecontents,\
ctl:ruleRemoveTargetById=920370-920390;ARGS_COMBINED_SIZE,\
ctl:ruleRemoveTargetById=921110-921160;ARGS:filecontents,\
ctl:ruleRemoveTargetById=932150;ARGS:filename,\
ctl:ruleRemoveTargetByTag=OWASP_CRS;ARGS:filecontents"
# Keeping track of client session within a text editor
# Nextcloud 28 and newer will include the document ID in the Request URI after session
# Matches:
# /apps/text/session/sync
# /apps/text/session/close
# /apps/text/session/push
# /apps/text/public/session/sync
# /apps/text/public/session/close
# /apps/text/public/session/push
# /apps/text/attachments
SecRule REQUEST_FILENAME "@rx /apps/text/(?:public/)?(?:session/(?:[0-9]+/)?(?:sync|close|push|save)|attachments)$" \
"id:9508311,\
phase:2,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
chain"
SecRule ARGS:sessionToken|ARGS:json.sessionToken "@rx (?i)^[a-z0-9+/]+$" \
"t:none,\
ctl:ruleRemoveTargetById=920273;ARGS:sessionToken,\
ctl:ruleRemoveTargetById=932236;ARGS:sessionToken,\
ctl:ruleRemoveTargetById=942390;ARGS:sessionToken,\
ctl:ruleRemoveTargetById=942432;ARGS:sessionToken,\
ctl:ruleRemoveTargetById=942450;ARGS:sessionToken,\
ctl:ruleRemoveTargetById=920273;ARGS:json.sessionToken,\
ctl:ruleRemoveTargetById=932236;ARGS:json.sessionToken,\
ctl:ruleRemoveTargetById=942390;ARGS:json.sessionToken,\
ctl:ruleRemoveTargetById=942432;ARGS:json.sessionToken,\
ctl:ruleRemoveTargetById=942450;ARGS:json.sessionToken,\
ctl:ruleRemoveTargetById=920273;REQUEST_BODY"
# Syncing client side document state
# Nextcloud 28 and newer will include the document ID in the Request URI after session
SecRule REQUEST_FILENAME "@rx /apps/text/(?:public/)?session/(?:[0-9]+/)?(?:sync|close|push|save)$" \
"id:9508312,\
phase:1,\
pass,\
t:none,\
nolog,\
ver:'nextcloud-rule-exclusions-plugin/1.2.0',\
ctl:ruleRemoveTargetById=920273;ARGS:documentState,\
ctl:ruleRemoveTargetById=932236;ARGS:documentState,\
ctl:ruleRemoveTargetById=932250;ARGS:documentState,\
ctl:ruleRemoveTargetById=941100;ARGS:documentState,\
ctl:ruleRemoveTargetById=942210;ARGS:documentState,\
ctl:ruleRemoveTargetById=942390;ARGS:documentState,\
ctl:ruleRemoveTargetById=942432;ARGS:documentState,\
ctl:ruleRemoveTargetById=942450;ARGS:documentState,\
ctl:ruleRemoveTargetById=920273;ARGS:json.documentState,\
ctl:ruleRemoveTargetById=932236;ARGS:json.documentState,\
ctl:ruleRemoveTargetById=932250;ARGS:json.documentState,\
ctl:ruleRemoveTargetById=941100;ARGS:json.documentState,\
ctl:ruleRemoveTargetById=942210;ARGS:json.documentState,\
ctl:ruleRemoveTargetById=942390;ARGS:json.documentState,\