Security audit

MayGuard

Security checks for vulnerabilities and agentic risk

Overview

MayGuard is a local skill-auditing script with no apparent harmful payload, but it can read outside the chosen audit folder through symlinks and can miss hidden files, so it should be reviewed before use.

Use this only as a lightweight helper, not as a definitive safety gate. Audit untrusted skills in a sandbox, do not rely on a `SAFE` result unless hidden files, archives, and symlinks have also been handled, and prefer a fixed version that rejects symlinks and reports skipped files.

A.I.G

Vulnerability Patterns

Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
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

Findings (2)

T05 · Unauthorized Access and Privilege Escalation

Warning

Location: scripts/audit.py:27
Finding: Symlink Traversal Allows Reads Outside the Audit Target
Content: View full analysis
`. 3. `os.walk()` lists the symlink as a file. 4. `open(file_path, ...)` follows the link and reads the external target with the victim's filesystem privileges. 5. Content from the out-of-scope file is tested again ...[truncated 722 chars]
Remediation: View remediation

T09 · Insecure Skill Coding Practices

Warning

Location: scripts/audit.py:29
Finding: Hidden-File Exclusion Creates a Direct Static-Analysis Bypass
Content: View full analysis
Remediation: View remediation

SkillSpector

Vulnerability Patterns

Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Tool MisuseTool Parameter Abuse, Chaining Abuse, Unsafe Defaults
MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration

Findings (8)

Tool Parameter Abuse

High

Category: Tool Misuse
Confidence: 85% confidence
Finding: Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
Content: Scanner excerpt · SKILL.md (reported line 39)May include surrounding context.
md
ClawGuard maintains a database of threat patterns in `references/threat_patterns.json`, including: - **Credential Theft:** Access to `.env`, SSH keys, or config files. - **Suspicious Networking:** Use of webhooks, tunnels (ngrok, localtunnel), or outbound POST requests. - **Destructive Commands:** `rm -rf /`, disk formatting, or privilege escalation. - **Obfuscation:** Use of `eval`, `exec`, or base64 decoding to hide logic. ## 🤝 Community Responsibility

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 · references/threat_patterns.json (reported line 3)May include surrounding context.
json
{ "credential_theft": [ "\\.env", "id_rsa", "openclaw\\.json", "credentials",

Tool Parameter Abuse

High

Category: Tool Misuse
Confidence: 90% confidence
Finding: Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
Content: Scanner excerpt · SKILL.md (reported line 39)May include surrounding context.
md
"aiohttp" ], "destructive_commands": [ "rm -rf /", "truncate", "chmod 777", "chown root",

Tool Parameter Abuse

High

Category: Tool Misuse
Confidence: 90% confidence
Finding: Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
Content: Scanner excerpt · references/threat_patterns.json (reported line 22)May include surrounding context.
json
"aiohttp" ], "destructive_commands": [ "rm -rf /", "truncate", "chmod 777", "chown root",

Tool Parameter Abuse

High

Category: Tool Misuse
Confidence: 85% confidence
Finding: Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
Content: Scanner excerpt · references/threat_patterns.json (reported line 22)May include surrounding context.
json
"aiohttp" ], "destructive_commands": [ "rm -rf /", "truncate", "chmod 777", "chown root",

Tool Parameter Abuse

High

Category: Tool Misuse
Confidence: 80% confidence
Finding: Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
Content: Scanner excerpt · references/threat_patterns.json (reported line 24)May include surrounding context.
json
"destructive_commands": [ "rm -rf /", "truncate", "chmod 777", "chown root", "mkfs", "dd if=/dev/zero"

Undeclared Tool Scope

Medium

Category: MCP Least Privilege
Confidence: 70% confidence
Finding: Without declared permissions the skill's intent is opaque and cannot be validated.
Content: No source excerpt is available for this finding.

Sudo/Root Execution

Medium

Category: Privilege Escalation
Confidence: 80% confidence
Finding: Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
Content: Scanner excerpt · references/threat_patterns.json (reported line 24)May include surrounding context.
json
"destructive_commands": [ "rm -rf /", "truncate", "chmod 777", "chown root", "mkfs", "dd if=/dev/zero"