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Security audit

Fox Cron Health Check

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed cron-health reporting helper that reads local OpenClaw cron state and does not modify files, install persistence, or contact external services.

Before installing, note that the skill reads local OpenClaw cron job definitions and run logs, which may include operational error details. Use the scheduled cron example only if you want recurring monitoring, and adjust the hard-coded example path to your actual skill location.

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 (1)

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
87% confidence
Finding

The skill documentation shows code-like capability to read local files by invoking a Python script from a user-specific workspace path, but it does not declare any explicit tool scope such as permissions or allowed-tools. This creates an authorization ambiguity: an agent or platform may permit file access beyond what reviewers expect, increasing the risk of unintended local file access or misuse if the skill is modified or invoked in a broader context.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.