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Security audit

Moxun Test Skill

Security checks for vulnerabilities and agentic risk

Overview

This is a simple greeting skill with no code or privileged behavior, though it may trigger on ordinary greetings.

Installing this should be low risk. Be aware that ordinary greetings may invoke it, so users who do not want a greeting skill to activate on casual hello messages may prefer narrower trigger wording.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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
Findings (1)

Vague Triggers

Medium
Confidence
95% confidence
Finding
The usage section says the skill activates when the user says "hello" or "greet me," which are common everyday phrases rather than narrowly scoped invocation triggers. The file also provides no exclusion conditions or context constraints to clarify when the skill should or should not activate.

Static analysis

No suspicious patterns detected.