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smallwebwaf/internal/waf/wordpress.conf
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Core Rule Set: WordPress's ordinary requests pass by default (closes #235)
Add the ninth change: wordpress.conf switches off, per path and field, each
rule that refused recorded WordPress 7.1.4 traffic. Add the recorded requests,
a test at the defaults and reading bodies, and list WordPress in the README.

Model: opus-5-5
2026-11-09 07:03:03 +00:00

135 lines
6.3 KiB
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# The ninth change: on WordPress's paths, some fields skip the rules that refused
# ordinary WordPress requests there. Each exclusion runs with the request, before
# the rules it switches off, so this file is loaded before the Core Rule Set's
# rules. Each comment names a request the rule refused. An exclusion on a field
# of a body applies only when the query has no parameter of that name, so it
# matters only while SWW_WAF_BODY_LIMIT is set.
# WordPress sends a call to its REST API to one of three addresses, by its
# permalink setting:
# /wp-json/wp/v2/posts/1
# /index.php/wp-json/wp/v2/posts/1
# /index.php?rest_route=/wp/v2/posts/1
# These two rules put the route, here /wp/v2/posts/1, in tx.rest_route for the
# exclusions below. A call that names a route in both its path and its query
# gets none of them, since WordPress follows the query.
SecRule &ARGS_GET:rest_route "@eq 0" "id:900705,phase:1,pass,nolog,chain"
SecRule REQUEST_FILENAME "@rx ^/(?:index\.php/)?wp-json(/.*)$" \
"capture,setvar:tx.rest_route=%{tx.1}"
SecRule REQUEST_FILENAME "@streq /index.php" "id:900706,phase:1,pass,nolog,chain"
SecRule ARGS_GET:rest_route "@rx ^(/.*)$" "capture,setvar:tx.rest_route=%{tx.1}"
# The block editor saves a post with POST and the header X-HTTP-Method-Override:
# PUT, which the Core Rule Set refused (920450). So does saving a user's editor
# preferences.
SecRule TX:rest_route "@beginsWith /" \
"id:900700,phase:1,pass,nolog,\
ctl:ruleRemoveTargetById=920450;REQUEST_HEADERS_NAMES:X-HTTP-Method-Override"
# The block editor and the site editor send HTML in the JSON field content, which
# skips these rules when saving or autosaving a post, a page, a template or a
# template part:
# 930120: cat /etc/hosts
# 932230: a code block with a shell pipeline and an SQL query
# 932250: the same code block
# 934100: console.log('ok')
# 941100: <iframe src="..." onload="...">
# 941110: <script>
# 941120: onload=
# 941160: <img src=
# 941180: <!-- wp:paragraph -->, the comment that starts every block
# 941390: console.log(
# 942190: how to select a table from the catalog
# 942270: how to select a table from the catalog
SecRule TX:rest_route \
"@rx ^/wp/v2/(?:(?:posts|pages)(?:/[0-9]+(?:/autosaves)?)?|template(?:s|-parts)(?:/[^/]+//[^/]+(?:/autosaves)?)?)$" \
"id:900701,phase:1,pass,nolog,chain"
SecRule &ARGS_GET:json.content "@eq 0" \
"ctl:ruleRemoveTargetById=930120;ARGS:json.content,\
ctl:ruleRemoveTargetById=932230;ARGS:json.content,\
ctl:ruleRemoveTargetById=932250;ARGS:json.content,\
ctl:ruleRemoveTargetById=934100;ARGS:json.content,\
ctl:ruleRemoveTargetById=941100;ARGS:json.content,\
ctl:ruleRemoveTargetById=941110;ARGS:json.content,\
ctl:ruleRemoveTargetById=941120;ARGS:json.content,\
ctl:ruleRemoveTargetById=941160;ARGS:json.content,\
ctl:ruleRemoveTargetById=941180;ARGS:json.content,\
ctl:ruleRemoveTargetById=941390;ARGS:json.content,\
ctl:ruleRemoveTargetById=942190;ARGS:json.content,\
ctl:ruleRemoveTargetById=942270;ARGS:json.content"
# A reply to a comment from the list of comments, in content:
# 932125: ls -la, in the reply's text
# 932230: ls -la, in the reply's text
# 932250: ls -la, in the reply's text
SecRule REQUEST_FILENAME "@streq /wp-admin/admin-ajax.php" \
"id:900702,phase:1,pass,nolog,chain"
SecRule &ARGS_GET:content "@eq 0" \
"ctl:ruleRemoveTargetById=932125;ARGS:content,\
ctl:ruleRemoveTargetById=932230;ARGS:content,\
ctl:ruleRemoveTargetById=932250;ARGS:content"
# Saving a plugin's or a theme's file from its file editor sends the file in
# newcontent, which skips these rules, each of which refused saving the plugin
# Hello Dolly's hello.php. Some of them refused only the whole file:
# 932140: if ( 'en_' !== substr(
# 932235: the whole file
# 933100: the whole file
# 933160: if ( 'en_' !== substr(
# 933210: $lyrics = explode(
# 941100: <style type='text/css'>
# 941160: <style type='text/css'>
# 941190: the whole file
# 942151: if ( 'en_' !== substr(
# 942540: Dolly'll never go away again";
SecRule REQUEST_FILENAME "@streq /wp-admin/admin-ajax.php" \
"id:900703,phase:1,pass,nolog,chain"
SecRule &ARGS_GET:newcontent "@eq 0" \
"ctl:ruleRemoveTargetById=932140;ARGS:newcontent,\
ctl:ruleRemoveTargetById=932235;ARGS:newcontent,\
ctl:ruleRemoveTargetById=933100;ARGS:newcontent,\
ctl:ruleRemoveTargetById=933160;ARGS:newcontent,\
ctl:ruleRemoveTargetById=933210;ARGS:newcontent,\
ctl:ruleRemoveTargetById=941100;ARGS:newcontent,\
ctl:ruleRemoveTargetById=941160;ARGS:newcontent,\
ctl:ruleRemoveTargetById=941190;ARGS:newcontent,\
ctl:ruleRemoveTargetById=942151;ARGS:newcontent,\
ctl:ruleRemoveTargetById=942540;ARGS:newcontent"
# Signing in, in pwd, where a password holds any characters:
# 930120: a password ending in /etc/hosts
SecRule REQUEST_FILENAME "@streq /wp-login.php" \
"id:900704,phase:1,pass,nolog,chain"
SecRule &ARGS_GET:pwd "@eq 0" "ctl:ruleRemoveTargetById=930120;ARGS:pwd"
# WordPress's searches for posts, media and plugins send the text searched for
# in s, which skips these rules there:
# 932120: powershell
# 932250: ls -la
# 932260: python3
SecRule REQUEST_FILENAME \
"@rx ^/(?:index\.php|wp-admin/(?:edit|upload|plugin-install)\.php)?$" \
"id:900707,phase:1,pass,nolog,\
ctl:ruleRemoveTargetById=932120;ARGS:s,\
ctl:ruleRemoveTargetById=932250;ARGS:s,\
ctl:ruleRemoveTargetById=932260;ARGS:s"
# The REST API's searches of posts send it in search, which skips the same rules
# there.
SecRule TX:rest_route "@rx ^/wp/v2/(?:search|posts)$" \
"id:900708,phase:1,pass,nolog,\
ctl:ruleRemoveTargetById=932120;ARGS:search,\
ctl:ruleRemoveTargetById=932250;ARGS:search,\
ctl:ruleRemoveTargetById=932260;ARGS:search"
# The plugin and theme file editors name the file open in file, which skips
# these rules there:
# 930120: akismet/views/config.php
# 932160: bin/install.sh
# 932260: docker-compose.yml
SecRule REQUEST_FILENAME "@rx ^/wp-admin/(?:plugin|theme)-editor\.php$" \
"id:900709,phase:1,pass,nolog,\
ctl:ruleRemoveTargetById=930120;ARGS:file,\
ctl:ruleRemoveTargetById=932160;ARGS:file,\
ctl:ruleRemoveTargetById=932260;ARGS:file"