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Security audit

Cron Health Check Zc

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward local cron health checker that reads OpenClaw cron job history and reports failures without hidden execution, network transfer, or data modification.

Install this only if you are comfortable letting it read OpenClaw cron job configuration and recent run logs under your OpenClaw home. Review its output before sharing it, because error messages can include operational details or account/API-limit information.

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
86% confidence
Finding

The skill documentation instructs reading and analyzing cron job run history via a local Python script, which implies file-read capability, but the manifest does not declare any tool scope such as permissions or allowed-tools. This creates an authorization gap: an agent may be granted broader implicit access than intended, making file access harder to review, constrain, or sandbox.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.