Add vpatch-CVE-2024-20404 rule and test

.appsec-tests/vpatch-CVE-2024-20404/CVE-2024-20404.yaml

@@ -0,0 +1,20 @@
+## autogenerated on 2025-12-10 15:15:31
+id: CVE-2024-20404
+info:
+  name: CVE-2024-20404
+  author: crowdsec
+  severity: info
+  description: CVE-2024-20404 testing
+  tags: appsec-testing
+http:
+  - raw:
+      - |
+        POST /gadgets/metadata HTTP/1.1
+        Host: {{Hostname}}
+
+        {"context":{"container":"default","language":"en","country":"US","locale":"en_US"},"gadgets":[{"url":"http://interactsh-url"}]}
+    cookie-reuse: true
+    matchers:
+    - type: status
+      status:
+       - 403

.appsec-tests/vpatch-CVE-2024-20404/config.yaml

@@ -0,0 +1,5 @@
+## autogenerated on 2025-12-10 15:15:31
+appsec-rules:
+  - ./appsec-rules/crowdsecurity/base-config.yaml
+  - ./appsec-rules/crowdsecurity/vpatch-CVE-2024-20404.yaml
+nuclei_template: CVE-2024-20404.yaml

appsec-rules/crowdsecurity/vpatch-CVE-2024-20404.yaml

@@ -0,0 +1,33 @@
+## autogenerated on 2025-12-10 15:15:31
+name: crowdsecurity/vpatch-CVE-2024-20404
+description: 'Detects SSRF attempts in Cisco Finesse via crafted POST to /gadgets/metadata with external URL in gadgets.url'
+rules:
+  - and:
+      - zones:
+          - URI
+        transform:
+          - lowercase
+        match:
+          type: equals
+          value: /gadgets/metadata
+      - zones:
+          - BODY_ARGS
+        variables:
+          - json.gadgets[0].url
+        transform:
+          - lowercase
+        match:
+          type: contains
+          value: 'http://'
+
+labels:
+  type: exploit
+  service: http
+  confidence: 3
+  spoofable: 0
+  behavior: 'http:exploit'
+  label: 'Cisco Finesse - SSRF'
+  classification:
+    - cve.CVE-2024-20404
+    - attack.T1190
+    - cwe.CWE-918

collections/crowdsecurity/appsec-virtual-patching.yaml

@@ -141,6 +141,7 @@ appsec-rules:
 - crowdsecurity/vpatch-CVE-2020-10987
 - crowdsecurity/vpatch-CVE-2025-55182
 - crowdsecurity/vpatch-CVE-2024-6235
+- crowdsecurity/vpatch-CVE-2024-20404
 author: crowdsecurity
 contexts:
 - crowdsecurity/appsec_base