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Insecure service configuration - Backdoor


Due a misconfiguration on services it is possible to upload files and install backdoors for later access, and leave them for public access.


  • Leave a shell for public access.
  • Get access to server files.
  • Upload and erase resources.


Implement the secure configuration of the vulnerable service, allowing it to only be accessed by authorized users and execute continuous monitoring on resources and the server.


Unauthorized external attacker with a service that allow the upload of files.

Expected Remediation Time

⌚ minutes.


Default score using CVSS 3.1. It may change depending on the context of the src.


  • Attack vector: N
  • Attack complexity: H
  • Privileges required: N
  • User interaction: N
  • Scope: C
  • Confidentiality: H
  • Integrity: H
  • Availability: L


  • Exploit code madurity: X
  • Remediation level: X
  • Report confidence: X


  • Vector string: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L/E:X/RL:X/RC:X
  • Score:
    • Base: 8.9
    • Temporal: 8.9
  • Severity:
    • Base: High
    • Temporal: High



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