Create CVE-2011-5252.yaml

Added a New Nuclei-Template CVE-2011-5252

http/cves/2011/CVE-2011-5252.yaml

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+id: CVE-2011-5252
+info:
+  name: Orchard 1.0.x before 1.0.21, 1.1.x before 1.1.31, 1.2.x before 1.2.42, and 1.3.x before 1.3.10 - Open Redirect
+  description: | 
+    Open redirect vulnerability in Users/Account/LogOff in Orchard 1.0.x before 1.0.21, 1.1.x before 1.1.31, 1.2.x before 1.2.42, and 1.3.x before 1.3.10 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the ReturnUrl parameter.
+  author: ctflearner
+  severity: medium
+  tags: 
+     - Orchard 
+     - Open redirect
+     - web
+     - cve2011
+  reference:
+    - https://www.exploit-db.com/exploits/36493
+    - https://nvd.nist.gov/vuln/detail/CVE-2011-5252  
+    - https://www.invicti.com/web-applications-advisories/open-redirection-vulnerability-in-orchard/
+    - https://exchange.xforce.ibmcloud.com/vulnerabilities/72110
+  classification:
+    cvss-metrics: CVSS:2.0/(AV:N/AC:M/Au:N/C:P/I:P/A:N)
+    cvss-score: 5.8
+    cve-id: CVE-2011-5252
+    cwe-id: CWE-20
+    cpe: cpe:2.3:a:orchardproject:orchard:1.3.10:*:*:*:*:*:*:*
+  
+  metadata:
+    max-request: 1
+
+http:
+  - method: GET
+    path:
+      - "{{BaseURL}}/orchard/Users/Account/LogOff?ReturnUrl=%2f%2fhttp://www.evil.com%3f"
+    
+    stop-at-first-match: true
+    matchers-condition: and
+    matchers:
+      - type: regex
+        part: header
+        regex:
+          - '(?m)^(?:Location\s*?:\s*?)(?:https?:\/\/|\/\/|\/\\\\|\/\\)?(?:[a-zA-Z0-9\-_\.@]*)evil\.com\/?(\/|[^.].*)?$'
+      - type: status
+        status:
+          - 301
+          - 302
+          - 307
+          - 308
+        condition: or