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Security audit

Google Drive

Security checks for vulnerabilities and agentic risk

Overview

This Drive skill requires review because its setup can run an unverified online installer without first requesting your approval.

Review and approve the CLI installation separately, preferably using a pinned release with verified integrity. Check its automatic skill synchronization settings before allowing persistent changes to other agents. Connect only the Drive access you need and retain the stated approval steps for edits, sharing, and deletion. The remote installers and hosted connector implementation could not be inspected; no malicious behavior was established.

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
Vulnerability Patterns
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Output HandlingUnvalidated Output Injection, Cross-Context Output, Unbounded Output
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Findings (4)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
97% confidence
Finding

The only observable behavior is remote installer execution, rather than Google Drive management. Although installing a dependency can be a supporting implementation detail, the supplied chunk establishes no connection between this installer and the declared functionality. The downloaded script's contents and any further effects cannot be determined from this chunk.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The command pipes a mutable HTTPS response directly into bash without verifying a pinned artifact, signature, or independently authenticated checksum. HTTPS protects transport but does not prevent a compromised distribution endpoint from delivering malicious code that could access local files and credentials; this is the same underlying installation risk identified by SQP-2.

Content

Scanner excerpt · SKILL.md (reported line 97)May include surrounding context.

Fallback setup executes remotely downloaded installation scripts without a system-integrity warning.

Medium
Category
Output Handling
Confidence
94% confidence
Finding

The fallback directs execution of remotely retrieved shell or PowerShell code without an explicit installation approval step or independent integrity verification. If the installer distribution is compromised, this can execute attacker-controlled code with the invoking user's privileges; limiting installation to a missing-CLI error reduces exposure but does not eliminate it.

Content

No source excerpt is available for this finding.

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
80% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 118)May include surrounding context.

md
- **`OOMOL_INSUFFICIENT_CREDIT`** — OOMOL billing stop. Recharge at `https://console.oomol.com/billing/token-recharge` before retrying.

- **HTTP 402 without `OOMOL_INSUFFICIENT_CREDIT`** — the third-party account itself has no active plan or credit. Report the provider error message as is; do not ask the user to recharge OOMOL.

## Resources