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Attack Tree Analysis for fatedier/frp

Objective: Gain Unauthorized Access/Disrupt Services via frp

Attack Tree Visualization

[[Gain Unauthorized Access/Disrupt Services via frp]] /
/
[[Compromise frpc]] [Compromise frps] / / / / [Steal Config] ==Expose Unauth. Service==

Attack Tree Path: Gain Unauthorized Access/Disrupt Services via frp

Description: This is the overarching goal of the attacker. It represents the ultimate objective of any attack targeting the frp-based application.

  • Likelihood: N/A (This is the goal, not an attack step)
  • Impact: Very High (Complete compromise of the application's intended functionality and potentially access to sensitive data)
  • Effort: N/A
  • Skill Level: N/A
  • Detection Difficulty: N/A

Attack Tree Path: Compromise frpc

Description: This involves gaining unauthorized control over the frp client (frpc) configuration and/or execution. This is a critical node because it allows direct access to the services exposed through frp.

  • Likelihood: Medium (Depends on the security of the client machine and configuration storage)

  • Impact: High (Full access to exposed services)

  • Effort: Low to Medium (Depends on access to the system)

  • Skill Level: Novice to Intermediate

  • Detection Difficulty: Medium to Hard (Depends on logging and intrusion detection)

  • Sub-Attack Vector: [Steal Config]

    • Description: The attacker obtains the frpc.ini file (or equivalent configuration), which contains sensitive information like the frps server address, authentication tokens, and details about exposed services.
    • Likelihood: Medium (Depends on how the config is stored)
    • Impact: High (Full access to exposed services)
    • Effort: Low to Medium (Depends on access to the system)
    • Skill Level: Novice to Intermediate
    • Detection Difficulty: Medium to Hard (Depends on logging and intrusion detection)

Attack Tree Path: Compromise frps

Description: This involves gaining unauthorized control over the frp server (frps). While often harder than compromising the client, it's still a critical vulnerability.

  • Likelihood: Low to Medium (Depends on the security of the server)

  • Impact: High to Very High (Control over all traffic and exposed services)

  • Effort: Medium to High

  • Skill Level: Intermediate to Advanced

  • Detection Difficulty: Medium to Hard

  • Sub-Attack Vector: ==Expose Unauthorized Service==

    • Description: This is the most critical and high-risk attack vector. The administrator unintentionally exposes a service that should not be publicly accessible (e.g., a database, internal API). This is a direct result of misconfiguration.
    • Likelihood: High (Common misconfiguration)
    • Impact: High to Very High (Depends on the exposed service – could range from data breaches to complete system compromise)
    • Effort: Very Low (The attacker simply needs to connect to the exposed service)
    • Skill Level: Novice (No special skills are required beyond basic networking knowledge)
    • Detection Difficulty: Medium (Requires monitoring exposed services and traffic; proactive configuration reviews are crucial)