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Security audit

Chmod Tool

Security checks for vulnerabilities and agentic risk

Overview

This skill is a small, disclosed file-permission helper, with some documentation gaps but no evidence of hidden, persistent, networked, or deceptive behavior.

Install only if you want an agent to help change local file permissions. Review target paths carefully, especially before recursive permission changes, because chmod can break access, executability, or privacy if applied too broadly.

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
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • 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 (2)

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
89% confidence
Finding

The skill advertises and demonstrates shell-capable behavior but does not declare any tool scope such as explicit permissions or allowed tools. That increases the chance an agent can invoke shell-like functionality without clear governance, review boundaries, or least-privilege restrictions, which is especially relevant because permission-changing commands can alter executability or lock down files.

Content

No source excerpt is available for this finding.

Missing User Warnings

Low
Category
Not specified by scanner
Confidence
84% confidence
Finding

The documentation includes recursive chmod usage but does not warn that recursive permission changes can unintentionally affect large directory trees, break applications, or expose files by making them overly permissive. In an agent setting, omission of this warning can increase operator error and make destructive bulk changes more likely.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.