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Security audit

Whoislookup

Security checks for vulnerabilities and agentic risk

Overview

This is a straightforward WHOIS lookup skill that uses network access as advertised, with a resource-use weakness but no hidden persistence or unrelated data access.

Reasonable to install for domain WHOIS lookups. Avoid pointing --server at untrusted or arbitrary hosts, and prefer adding a response-size cap and overall deadline before using it in automated or exposed workflows.

Vulnerability Patterns
  • Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
  • 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
Findings (2)

T09 · Insecure Skill Coding Practices

Warning
Location
whoislookup.py:23
Finding

Unbounded WHOIS Response Can Cause Memory and CPU Exhaustion

Content
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Remediation
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max_response_size: raise ValueError("WHOIS response exceeds the size limit") data.extend(chunk) return data.decode("utf-8", errors="replace") except Exception as e: return f"Error querying {server}: {e}" ``` ]]>

T09 · Insecure Skill Coding Practices

Warning
Location
scripts/whoislookup.py:23
Finding

Unbounded WHOIS Response Can Cause Memory and CPU Exhaustion in Packaged Script

Content
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Remediation
View remediation
Vulnerability Patterns
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • 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)

Vague Triggers

Low
Category
Not specified by scanner
Confidence
78% confidence
Finding

This markdown file describes what the skill does and shows example usage, but it does not define any explicit activation phrases, scope limits, or exclusion conditions. In contexts where README text is reused for skill routing or invocation metadata, the broad description 'Domain WHOIS lookup tool' and generic examples could leave activation boundaries underspecified.

Content

No source excerpt is available for this finding.