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Security audit

Nc Tool

Security checks for vulnerabilities and agentic risk

Overview

This is a small netcat-style network utility skill with expected but broadly scoped network-use instructions, and no evidence of hidden persistence, credential access, or malicious behavior.

Use this only on hosts and networks you own or are explicitly authorized to test. Before using scan or listen-style commands, confirm the target host, port range, and whether data may be sent or received. Be aware that the bundled script appears limited to a simple TCP connection check despite broader capabilities described in the skill text.

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
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)

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The skill advertises capabilities for port scanning, listen mode, and arbitrary data transfer without any safety guidance, authorization boundaries, or warnings about legal and security implications. In an agent context, this omission can normalize potentially intrusive network behavior and increase the chance of misuse against unauthorized hosts or exposure of sensitive data.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.