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Security audit

Lanhu Design

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward Lanhu design asset helper that discloses its need for Lanhu cookies and an external CLI.

Install only the referenced lh-design CLI if you trust that upstream project, and treat LANHU_COOKIE or DDS_COOKIE like session credentials. Prefer a scoped Lanhu account/session and avoid storing cookies in shared workspaces.

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
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (1)

Credential Access

High
Category
Privilege Escalation
Confidence
60% confidence
Finding

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

Content

Scanner excerpt · SKILL.md (reported line 19)May include surrounding context.

text
Source: ~/.lanhu-design-reader/src
Virtualenv: ~/.lanhu-design-reader/venv
Config: ~/.lanhu-design-reader/.env
Command: ~/.local/bin/lh-design

Static analysis

No suspicious patterns detected.