Back to skill

Security audit

Firewall Manager

Security checks for vulnerabilities and agentic risk

Overview

This skill is a static Firewall Manager reference helper and does not show credential access, network activity, persistence, or destructive behavior.

Install only if you want a simple static reference/cheatsheet. Do not expect it to manage firewalls or perform live lookups; it appears to provide canned guidance only.

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
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (3)

Credential Access

High
Category
Privilege Escalation
Confidence
70% confidence
Finding

Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Content

Scanner excerpt · scripts/script.sh (reported line 64)May include surrounding context.

sh
## Prerequisites
- Basic understanding of security concepts
- Required tools and access credentials
- System meeting minimum requirements

## Installation

Description-Behavior Mismatch

Medium
Category
Not specified by scanner
Confidence
87% confidence
Finding

The manifest says this skill is a reference tool for devtools covering intro, quickstart, patterns, and quick lookup, while the code is a Bash CLI that only prints canned text blocks. Although not dangerous, the implementation does not perform any actual Firewall Manager management or interactive lookup behavior beyond static help content, creating a semantic mismatch between the named skill and what the code actually offers.

Content

No source excerpt is available for this finding.

Intent-Code Divergence

Low
Category
Not specified by scanner
Confidence
95% confidence
Finding

The help output line says firewall-manager v$VERSION, implying dynamic version display, but the single-quoted heredoc delimiter causes the shell to print the literal string $VERSION instead of the actual version value. This is a direct contradiction between what the inline help text suggests and what the code outputs.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.