Core Rule Set: more of Drupal's ordinary fields pass (closes #244)

Names, searches and the page to return to on more Drupal paths skip
the rules that misfire on them: 930120, 932120, 932250 and 932260,
plus 932230 and 932235 on destination only. An email address skips
930120, 932120 and 932260; the oEmbed url only 930120 and 932120.
Every Drupal path may carry a language prefix such as /fr. Requests
recorded from Drupal 11.4.11 with plain words, python3, powershell,
ls -la and .htaccess are added to the test data; tests show attacks
and "; wget ..." still refused on each new field.

Model: opus-5-5

go.mod

@@ -4,7 +4,7 @@ go 1.26.0
 
 require (
 	github.com/corazawaf/coraza-coreruleset/v4 v4.25.0
-	github.com/corazawaf/coraza/v3 v3.8.1
+	github.com/corazawaf/coraza/v3 v3.8.2-0.20261022102553-d028be399c68
 	github.com/fsnotify/fsnotify v1.10.1
 	github.com/hashicorp/golang-lru/v2 v2.0.7
 	github.com/maxmind/mmdbwriter v1.2.0
@@ -15,7 +15,7 @@ require (
 require (
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
-	github.com/corazawaf/libinjection-go v0.3.3 // indirect
+	github.com/corazawaf/libinjection-go v0.3.4 // indirect
 	github.com/goccy/go-json v0.10.5 // indirect
 	github.com/goccy/go-yaml v1.19.2 // indirect
 	github.com/gotnospirit/makeplural v0.0.0-20180622080156-a5f48d94d976 // indirect
@@ -34,10 +34,10 @@ require (
 	github.com/tidwall/pretty v1.2.1 // indirect
 	github.com/valllabh/ocsf-schema-golang v1.0.3 // indirect
 	go4.org/netipx v0.0.0-20231129151722-fdeea329fbba // indirect
-	golang.org/x/net v0.58.0 // indirect
+	golang.org/x/net v0.60.0 // indirect
 	golang.org/x/sync v0.23.0 // indirect
 	golang.org/x/sys v0.48.0 // indirect
-	golang.org/x/text v0.41.0 // indirect
+	golang.org/x/text v0.42.0 // indirect
 	google.golang.org/protobuf v1.36.11 // indirect
 	rsc.io/binaryregexp v0.2.0 // indirect
 )

go.sum

@@ -2,14 +2,16 @@ github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/corazawaf/coraza-coreruleset v0.0.0-20240226094324-415b1017abdc h1:OlJhrgI3I+FLUCTI3JJW8MoqyM78WbqJjecqMnqG+wc=
-github.com/corazawaf/coraza-coreruleset v0.0.0-20240226094324-415b1017abdc/go.mod h1:7rsocqNDkTCira5T0M7buoKR2ehh7YZiPkzxRuAgvVU=
+github.com/corazawaf/coraza-coreruleset/crs/tests/v4 v4.30.0 h1:ZX0xWXpQgRXV/4sdfw21mOZBmmzQSb1+JiR51YOLv8I=
+github.com/corazawaf/coraza-coreruleset/crs/tests/v4 v4.30.0/go.mod h1:yf3Gc7mGKBR1wchr4EXZHG10En6WQ4W4MJCg3ix91wQ=
+github.com/corazawaf/coraza-coreruleset/crs/v4 v4.30.0 h1:XMYT7VOFM2VrpIKMUn4vFWyoFNYg1ZaYiexs76AmxzQ=
+github.com/corazawaf/coraza-coreruleset/crs/v4 v4.30.0/go.mod h1:1yaQUjecpEJ/cWXhJaFto+vRuezJCCfVxGQlaQxAGt0=
 github.com/corazawaf/coraza-coreruleset/v4 v4.25.0 h1:tqFO1lfVpTiyWtlN618OXpZMfw+nnN0Q4///W5W+/HM=
 github.com/corazawaf/coraza-coreruleset/v4 v4.25.0/go.mod h1:nRuGXITxOPvsLF2VxaTB7pYok8QB8BitX3ZenXcUryY=
-github.com/corazawaf/coraza/v3 v3.8.1 h1:dMV55FbMR2vOks/acrT43RShR+VkzU6jwp+XPdxay8o=
-github.com/corazawaf/coraza/v3 v3.8.1/go.mod h1:nPVk2JqADYBcKLYvo9cRsr+z4JhanU0WniGhZZBZD6c=
-github.com/corazawaf/libinjection-go v0.3.3 h1:NhbXKRfRpqKzBMzv8zpCcnjyEw7BCVhBOv9IPuBl7Fc=
-github.com/corazawaf/libinjection-go v0.3.3/go.mod h1:Ik/+w3UmTWH9yn366RgS9D95K3y7Atb5m/H/gXzzPCk=
+github.com/corazawaf/coraza/v3 v3.8.2-0.20261022102553-d028be399c68 h1:KLEjvBBSwQcxvgT6h1VDjRLtQ+V9eObAwubb1CTWf9U=
+github.com/corazawaf/coraza/v3 v3.8.2-0.20261022102553-d028be399c68/go.mod h1:9XocblQEwK6EYylRth7PrPIifF2l0iSoYo4FAXhXU/8=
+github.com/corazawaf/libinjection-go v0.3.4 h1:jX2Tit2xZxYJJyVryNXucYBZtQqS7473x9Nc6lgRRbk=
+github.com/corazawaf/libinjection-go v0.3.4/go.mod h1:Ik/+w3UmTWH9yn366RgS9D95K3y7Atb5m/H/gXzzPCk=
 github.com/foxcpp/go-mockdns v1.2.0 h1:omK3OrHRD1IWJz1FuFBCFquhXslXoF17OvBS6JPzZF0=
 github.com/foxcpp/go-mockdns v1.2.0/go.mod h1:IhLeSFGed3mJIAXPH2aiRQB+kqz7oqu8ld2qVbOu7Wk=
 github.com/fsnotify/fsnotify v1.10.1 h1:b0/UzAf9yR5rhf3RPm9gf3ehBPpf0oZKIjtpKrx59Ho=
@@ -79,14 +81,14 @@ go4.org/netipx v0.0.0-20231129151722-fdeea329fbba h1:0b9z3AuHCjxk0x/opv64kcgZLBs
 go4.org/netipx v0.0.0-20231129151722-fdeea329fbba/go.mod h1:PLyyIXexvUFg3Owu6p/WfdlivPbZJsZdgWZlrGope/Y=
 golang.org/x/mod v0.41.0 h1:qJmnOUb4YB+FsEuM3HcWucdZASCPGhsX6uljO6pog0c=
 golang.org/x/mod v0.41.0/go.mod h1:Ek9pY8RKWXwsWvd3rQiHYtMqkjSUV+s1Rj7j4H5Ur6o=
-golang.org/x/net v0.58.0 h1:ynWG7rqYi4ccpTEuPZ2QGWHktVEM9DMCj9yzDE0Q7To=
-golang.org/x/net v0.58.0/go.mod h1:YwCddHnFlT7eLQqVprV19OnhLGtc5xOKgE0RyqgfWAU=
+golang.org/x/net v0.60.0 h1:79p50tfZlm0J9YfoDsSi639qSXNGVwEzOPLCxM2FsYU=
+golang.org/x/net v0.60.0/go.mod h1:2DA/G1UfVbCpQPeWTmMPGY7Cs2PkBkwu743bVX5PIVg=
 golang.org/x/sync v0.23.0 h1:KameEIfc1IkluZyXWLn39Wd4tURc6GbCiISGiZm2bQk=
 golang.org/x/sync v0.23.0/go.mod h1:sUUOizhqBxiL6pEWpqNLUiaJn1ShEbZ6BBqskPbjZm0=
 golang.org/x/sys v0.48.0 h1:bbX/i/6MgT9BVLM9RT1thmxL04yeTAhbEz4SyadbXoo=
 golang.org/x/sys v0.48.0/go.mod h1:hNLxWAXmnKAxqDtdwIYC4bM9oQPEecfsnNMuSxOs3og=
-golang.org/x/text v0.41.0 h1:vz/seA0lnX87Othu2f/0L24RcgrXD9/YFTSuGjj3rH8=
-golang.org/x/text v0.41.0/go.mod h1:jvf1O8ajNzZqhSrQBPbutR/EB83Cc0CFrezNQIwbb5M=
+golang.org/x/text v0.42.0 h1:JbOZXgfeCPU9gacVtYliJqOhD+zhrEqK4LfdpmlUZqI=
+golang.org/x/text v0.42.0/go.mod h1:ojzP1Z+2QtioaF8DTtO8K5q7JWVVYwZKenzujK0Zd0E=
 golang.org/x/tools v0.50.0 h1:c2ifzfcuY7L90lZ2aKd8S4K2NpASF08SZx9ZuJkHmSU=
 golang.org/x/tools v0.50.0/go.mod h1:7ulVMw3831Mwi5EZD6RomGyffr4VFjuNYXf2BbCEAV0=
 google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=

internal/coreruleset/coreruleset_test.go

@@ -13,6 +13,7 @@ import (
 	"slices"
 	"strconv"
 	"strings"
+	"sync"
 	"testing"
 
 	"sneak.berlin/go/smallwebwaf/internal/coreruleset"
@@ -39,6 +40,42 @@ func newCoreRuleSet(t *testing.T, level int, disabled ...int) *coreruleset.CoreR
 	return crs
 }
 
+// TestConcurrentRequestsKeepTheirOwnExclusions inspects a Drupal and a
+// WordPress request at once, many times over, on one Core Rule Set, as
+// sww's server does. Each passes only while its own exclusions apply.
+func TestConcurrentRequestsKeepTheirOwnExclusions(t *testing.T) {
+	t.Parallel()
+
+	const rounds = 50
+
+	crs := atDefaults(t)
+	targets := []string{
+		"/admin/people?user=docker-compose.yml&status=All&role=All&permission=All",
+		"/wp-admin/edit-tags.php?taxonomy=post_tag&post_type=post&s=python3",
+	}
+
+	var inspecting sync.WaitGroup
+
+	for range rounds {
+		for _, target := range targets {
+			inspecting.Go(func() {
+				req := httptest.NewRequestWithContext(t.Context(), http.MethodGet,
+					"http://git.example"+target, nil)
+				req.Header.Set("User-Agent", "Mozilla/5.0 (X11; Linux x86_64; rv:131.0) "+
+					"Gecko/20100101 Firefox/131.0")
+				req.Header.Set("Accept", "text/html")
+
+				result, _, err := crs.Inspect(req, netip.MustParseAddr("203.0.113.9"), req.Body)
+				if err != nil || !reflect.DeepEqual(result, coreruleset.Result{}) {
+					t.Errorf("GET %s: %+v, %v", target, result, err)
+				}
+			})
+		}
+	}
+
+	inspecting.Wait()
+}
+
 // request is a request a test inspects: its method, its target, the path
 // and the query as a client sends them, and its headers, each written
 // "Name: value".

internal/coreruleset/drupal.conf

@@ -4,9 +4,10 @@
 # request, before the rules it switches off, so this file is loaded before the
 # Core Rule Set's rules. Each comment names a request a 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. Rule 900805
-# is the exception: it removes the rules from name in a body even when the
-# query has name.
+# of that name, so it matters only while SWW_WAF_BODY_LIMIT is set. The
+# exclusions above the comment "The fields below are in bodies" also cover a
+# body field of the same name whatever the query holds, and only those below it
+# need a query without that name.
 #
 # Each path may start with a language prefix, such as /fr in
 # /fr/admin/content. The prefix is two or three letters, then optionally a