Add vpatch-CVE-2019-18952 rule and test (#1534)

* Add vpatch-CVE-2019-18952 rule

* Add vpatch-CVE-2019-18952 test config

* Add CVE-2019-18952.yaml test

* Add vpatch-CVE-2019-18952 rule to vpatch collection

* Update taxonomy

* up

* Update taxonomy

---------

Co-authored-by: GitHub Action <[email protected]>
Co-authored-by: Thibault Koechlin <[email protected]>
Co-authored-by: Thibault "bui" Koechlin <[email protected]>

Author: 3 people

.appsec-tests/vpatch-CVE-2019-18952/CVE-2019-18952.yaml

@@ -0,0 +1,34 @@
+## autogenerated on 2025-10-15 14:08:28
+id: CVE-2019-18952
+info:
+  name: CVE-2019-18952
+  author: crowdsec
+  severity: info
+  description: CVE-2019-18952 testing
+  tags: appsec-testing
+http:
+  - raw:
+      - |
+        POST /cgi-bin/up.cgi HTTP/1.1
+        Host: {{Hostname}}
+        X-Requested-With: XMLHttpRequest
+        Content-Type: multipart/form-data; boundary=---------------------------5825462663702204104870787337
+
+        -----------------------------5825462663702204104870787337
+        Content-Disposition: form-data; name="sid"
+
+        testpath
+        -----------------------------5825462663702204104870787337
+        Content-Disposition: form-data; name="file"; filename="testfile.php"
+        Content-Type: application/php
+
+        <?php
+        echo md5('999999999');
+        unlink(__FILE__);
+        ?>
+        -----------------------------5825462663702204104870787337--
+    cookie-reuse: true
+    matchers:
+    - type: status
+      status:
+       - 403

.appsec-tests/vpatch-CVE-2019-18952/config.yaml

@@ -0,0 +1,5 @@
+## autogenerated on 2025-10-15 14:08:28
+appsec-rules:
+  - ./appsec-rules/crowdsecurity/base-config.yaml
+  - ./appsec-rules/crowdsecurity/vpatch-CVE-2019-18952.yaml
+nuclei_template: CVE-2019-18952.yaml

appsec-rules/crowdsecurity/vpatch-CVE-2019-18952.yaml

@@ -0,0 +1,31 @@
+## autogenerated on 2025-10-15 14:08:28
+name: crowdsecurity/vpatch-CVE-2019-18952
+description: 'Detects arbitrary file upload attempts to Xfilesharing up.cgi endpoint (CVE-2019-18952)'
+rules:
+  - and:
+      - zones:
+          - URI
+        transform:
+          - lowercase
+        match:
+          type: contains
+          value: /cgi-bin/up.cgi
+      - zones:
+          - FILENAMES
+        transform:
+          - lowercase
+        match:
+          type: endsWith
+          value: .php
+
+labels:
+  type: exploit
+  service: http
+  confidence: 3
+  spoofable: 0
+  behavior: 'http:exploit'
+  label: 'Xfilesharing - File Upload'
+  classification:
+    - cve.CVE-2019-18952
+    - attack.T1190
+    - cwe.CWE-434

collections/crowdsecurity/appsec-virtual-patching.yaml

@@ -122,6 +122,7 @@ appsec-rules:
 - crowdsecurity/vpatch-CVE-2022-38627
 - crowdsecurity/vpatch-CVE-2025-36604
 - crowdsecurity/vpatch-CVE-2025-61882
+- crowdsecurity/vpatch-CVE-2019-18952
 - crowdsecurity/vpatch-CVE-2025-54249
 - crowdsecurity/vpatch-CVE-2020-13640
 - crowdsecurity/vpatch-CVE-2018-11511