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fail2ban Reporter

Security checks across malware telemetry and agentic risk

Overview

This skill appears purpose-built for fail2ban-to-AbuseIPDB reporting, but its auto-install path can leave root-run fail2ban executing a script from a user-writable skill directory.

Review carefully before installing. Only enable auto-reporting on a server where you intentionally want fail2ban events sent to AbuseIPDB. Prefer installing the reporting script into a root-owned, non-writable path before enabling the fail2ban action, and confirm that your environment permits sharing banned IPs and abuse comments with a third-party service.

SkillSpector

By NVIDIA
Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (4)

Lp3

Medium
Category
MCP Least Privilege
Confidence
86% confidence
Finding
The skill documentation clearly instructs the user to execute shell scripts that install system-level fail2ban actions and transmit data externally, yet no permissions are declared. This creates a transparency and consent problem: users or platforms may underestimate the skill's ability to modify system security tooling and send banned IP data to third parties.

Missing User Warnings

Medium
Confidence
90% confidence
Finding
The README explicitly encourages reporting banned IPs to a third-party service and enabling automatic reporting, but it does not warn users that this shares server-observed IP addresses and related abuse metadata externally. While IPs are often attacker infrastructure, this still has privacy, policy, and compliance implications in some environments, especially if bans can include false positives or internal/test traffic.

Missing User Warnings

Medium
Confidence
91% confidence
Finding
The auto-reporting section describes installation and periodic reporting, but it does not prominently warn that banned IP addresses will be transmitted to external services and that fail2ban behavior will be altered via an installed action. This can lead to unintentional disclosure of security event data, privacy/compliance issues, and unexpected persistent changes to host defenses.

Sudo/Root Execution

Medium
Category
Privilege Escalation
Content
fi

# Restart fail2ban
sudo systemctl restart fail2ban

echo "✅ Auto-reporting installed!"
echo "   New bans will be reported to AbuseIPDB automatically."
Confidence
88% confidence
Finding
sudo

VirusTotal

66/66 vendors flagged this skill as clean.

View on VirusTotal

Static analysis

No suspicious patterns detected.