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Security audit

Amazon 商品评论【Gecho 官方】

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed Amazon review collection helper that routes user-requested tasks to the Gecho MCP workflow, with no evidence of hidden execution, exfiltration, persistence, or destructive behavior.

Before installing, be aware that the workflow depends on Gecho Bridge and a Chrome extension connected to your logged-in Amazon browser session. Only use it for review collection you intentionally request, review the Gecho extension/package source you are comfortable trusting, and avoid running the setup commands unless you want to add that MCP service.

A.I.G

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (1)

Natural-Language Policy Violations

Medium
Category
Not specified by scanner
Confidence
89% confidence
Finding

The markdown consistently instructs users in Chinese, including the description, setup steps, prompts, and response templates. Under the policy rule, forcing a specific language without opt-in is a natural-language policy issue unless the skill explicitly offers a language choice or documents a justified region-specific constraint, which this file does not.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.