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Security audit

Apple Notary

Security checks for vulnerabilities and agentic risk

Overview

Review recommended: Apple Notary operations are scoped, but setup can run downloaded software whose broader system changes are not explained.

Review or preinstall a pinned CLI before enabling automatic setup, and check its agent-skill installation and synchronization settings. Connecting Apple Notary trusts OOMOL with account access. Keep approval of exact submission payloads enabled. Installer contents and hosted connector internals were unavailable for inspection; this Review verdict reflects setup scope and uncertainty, not evidence of malware.

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
98% confidence
Finding

The supplied code performs remote script execution, not an Apple Notary operation. Although installing tooling could be a supporting implementation detail, the supplied content establishes no connection between this installer and the declared service. The downloaded script's contents and any resulting system changes are not visible in the provided chunk.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
97% confidence
Finding

The curl-to-bash command executes mutable remote content without pinning a version or verifying a signature or trusted checksum. HTTPS protects transport but does not prevent a compromised distribution server or release pipeline from supplying code that steals accessible credentials or modifies local files; the PowerShell setup command has the same weakness.

Content

Scanner excerpt · SKILL.md (reported line 58)May include surrounding context.

The setup workflow executes a downloaded installer without warning the user about remote code execution or local system changes.

Medium
Category
Output Handling
Confidence
94% confidence
Finding

On a missing-CLI error, the setup instructions direct the agent to execute a remote installer without first obtaining approval for local code execution and system changes. Although this is a conditional dependency-installation step rather than malicious behavior, following it could run attacker-controlled code with the agent's local privileges if the installer distribution is compromised; the declared Bash tool restriction may limit execution in some environments.

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 79)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