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During an assessment, a penetration tester sends the following request: POST /services/v1/users/create HTTP/1.1 Host: target-application.com Content-Type: application/json Content-Length: [dynamic] Authorization: Bearer (FUZZ) Which of the following attacks is the penetration tester performing?
Correct Answer: B
This attack attempts to manipulate the API by fuzzing the authorization token (Authorization: Bearer (FUZZ)). This suggests an attempt to bypass authentication or escalate privileges by using an invalid, stolen, or guessed token-a form of API abuse. * Option A (Directory traversal) #: * Involves manipulating file paths (e.g., ../../../etc/passwd), but this attack targets API authentication. * Option B (API abuse) #: * Correct. Fuzzing the authorization token suggests an attempt to bypass authentication or test for weak API security. * Option C (Server-side request forgery - SSRF) #: * SSRF manipulates backend requests to make unauthorized HTTP calls, which is not evident here. * Option D (Privilege escalation) #: * While API abuse may lead to privilege escalation, fuzzing the token alone does not directly escalate privileges. # Reference: CompTIA PenTest+ PT0-003 Official Guide - API Security Testing & Authentication Bypasses