ClawHub
Back to skill

Security audit

Clippy - Microsoft 365 CLI

Security checks for vulnerabilities and agentic risk

Overview

This skill is a coherent Microsoft 365 helper, but it asks the agent to install and run mutable third-party code while enabling persistent authenticated access and mailbox/calendar changes without clear approval boundaries.

Install only if you are comfortable giving this tool access to your Microsoft 365 mailbox and calendar. Prefer a pinned, reviewed revision, use a dedicated or contained profile where possible, avoid persistent keepalive unless you need it, and require explicit confirmation before sending mail, replying/forwarding, deleting events, moving mail, or downloading attachments.

A.I.G

Vulnerability Patterns
  • Insecure DependenciesIntroduces malicious components through unsafe dependency sources
  • 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 (1)

T08 · Insecure Dependencies

Warning
Location
SKILL.md:13
Finding

Execution of Unpinned Third-Party Source and Dependencies

Content
View full analysis
Remediation
View remediation

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Rogue AgentSelf-Modification, Session Persistence
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

Session Persistence

Medium
Category
Rogue Agent
Confidence
60% confidence
Finding

Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.

Content

Scanner excerpt · SKILL.md (reported line 64)May include surrounding context.

clippy calendar --details

text

### Create Events

```bash
clippy create-event "Title" 09:00 10:00

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
91% confidence
Finding

The skill explicitly exposes state-changing actions for a user's mailbox and calendar, including sending mail, deleting events, moving messages, and marking items read, but it does not warn that these operations modify user data or require explicit confirmation. In an agent setting, this increases the chance of unintended destructive or privacy-impacting actions being taken on behalf of the user through ambiguous prompts or automation mistakes.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.