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Security audit

DealNews

Security checks for vulnerabilities and agentic risk

Overview

The DealNews features fit their purpose, but automatic setup executes unchecked downloaded code and leaves broader changes to your agent environment unexplained.

Review setup before installing. Prefer a verified, pinned CLI installation and explicitly control changes to other agent skills. Upstream documents OO_SKILLS_SYNC_DISABLED=1 to disable startup skill synchronization in its [command reference](https://github.com/oomol-lab/oo-cli/blob/main/docs/commands.md). Consider OOMOL authentication and usage charges. The remote installers and hosted implementation were not inspectable; the reviewed artifact does not establish malicious intent or exfiltration.

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
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Findings (4)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
98% confidence
Finding

The supplied command executes an external installation script, with no visible connection to DealNews functionality. This introduces remote code execution and installation behavior not described by the declared purpose. The downloaded script's contents and ultimate effects are not available for inspection.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
95% confidence
Finding

The supplied code only invokes a login command. It contains no DealNews search or read operation and establishes no connection between this authentication step and DealNews. On the supplied evidence, authentication is the sole behavior rather than a demonstrated supporting implementation detail.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The setup instructions pipe a remotely fetched, unpinned script directly into Bash, and the PowerShell alternative likewise immediately executes downloaded content. If the distribution endpoint or delivery pipeline is compromised, attacker-controlled code runs with the invoking user's privileges, potentially exposing local secrets or modifying files. Restricting this to missing-CLI setup reduces exposure frequency but does not provide integrity verification or explicit approval for host changes.

Content

Scanner excerpt · SKILL.md (reported line 59)May include surrounding context.

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 74)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