id: CVE-2021-32682

info:
  name: elFinder - Multiple vulnerabilities leading to RCE
  author: smaranchand
  severity: critical
  tags: cve,cve2021,elfinder,misconfig,rce,oss
  description: elFinder is an open-source file manager for web, written in JavaScript using jQuery UI. Several vulnerabilities affect elFinder 2.1.58. These vulnerabilities can allow an attacker to execute arbitrary code and commands on the server hosting the elFinder PHP connector, even with minimal configuration. The issues were patched in version 2.1.59. As a workaround, ensure the connector is not exposed without authentication.
  reference:
    - https://smaranchand.com.np/2022/01/organization-vendor-application-security/
    - https://blog.sonarsource.com/elfinder-case-study-of-web-file-manager-vulnerabilities
    - https://github.com/Studio-42/elFinder/security/advisories/GHSA-wph3-44rj-92pr
    - https://nvd.nist.gov/vuln/detail/CVE-2021-32682
  remediation: Update to elFinder 2.1.59
  metadata:
    github: https://github.com/Studio-42/elFinder
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.80
    cve-id: CVE-2021-32682
    cwe-id: CWE-22,CWE-78,CWE-918

requests:
  - method: GET
    path:
      - "{{BaseURL}}/admin/elfinder/elfinder-cke.html"
      - "{{BaseURL}}/assets/backend/elfinder/elfinder-cke.html"
      - "{{BaseURL}}/assets/elFinder-2.1.9/elfinder.html"
      - "{{BaseURL}}/assets/elFinder/elfinder.html"
      - "{{BaseURL}}/backend/elfinder/elfinder-cke.html"
      - "{{BaseURL}}/elfinder/elfinder-cke.html"
      - "{{BaseURL}}/uploads/assets/backend/elfinder/elfinder-cke.html"
      - "{{BaseURL}}/uploads/assets/backend/elfinder/elfinder.html"
      - "{{BaseURL}}/uploads/elfinder/elfinder-cke.html"

    stop-at-first-match: true
    matchers-condition: and
    matchers:
      - type: word
        words:
          - "elfinder"
          - "php/connector"
        condition: and

      - type: status
        status:
          - 200