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Security audit

Sauce Labs

Security checks for vulnerabilities and agentic risk

Overview

The Sauce Labs workflow has approval controls, but its required software can make broader changes to your agent environment that the skill does not explain.

Review OOMOL's account access and install a verified CLI release yourself before use. If you do not want additional agent skills installed or refreshed, the publisher documents OO_SKILLS_SYNC_DISABLED=1 for disabling startup synchronization; set it before invoking oo. Continue confirming job edits, especially visibility changes. The downloaded installer and hosted service implementation remain outside the inspected package.

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
99% confidence
Finding

The supplied command performs remote script execution for an Oomol CLI installer, with no visible Sauce Labs operations or established connection to the declared purpose. This is a materially different capability, not a demonstrated supporting implementation detail. The downloaded script's contents and further effects cannot be determined from this code chunk.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
97% confidence
Finding

Piping the HTTPS installer directly into Bash executes the server's current response with the agent's local user privileges, without artifact pinning or independent integrity verification. A compromised distribution endpoint could therefore execute malicious code and access local data; this is the same underlying installation risk identified by SQP-2, not evidence that the current installer is malicious.

Content

Scanner excerpt · SKILL.md (reported line 61)May include surrounding context.

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

Medium
Category
Output Handling
Confidence
92% confidence
Finding

When the CLI is missing, the setup instructions direct the agent to execute remotely fetched shell or PowerShell code without requiring user approval or verifying a pinned artifact. This can turn a Sauce Labs task into local arbitrary-code execution if the installer distribution is compromised; the conditional setup trigger reduces exposure but does not eliminate the risk.

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 82)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