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Security audit

Od Tool

Security checks for vulnerabilities and agentic risk

Overview

This skill is a simple local file byte dumper with inaccurate feature claims, but no evidence of hidden, persistent, destructive, or exfiltrating behavior.

Install only if an octal-only local file dump helper is acceptable. Do not rely on the advertised -x, -d, -c, or -A options unless the publisher updates the implementation, and avoid pointing it at sensitive files unless you intend their bytes to be printed into the agent session.

A.I.G

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

SkillSpector

Vulnerability Patterns
  • 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
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

Tp4

High
Category
MCP Tool Poisoning
Confidence
98% confidence
Finding

The declared description says the skill dumps file contents in octal, decimal, hexadecimal, and ASCII formats. The code only emits octal: an octal offset and octal byte values. It does not generate decimal, hexadecimal, or ASCII views. Additionally, when no command-line argument is supplied, it reads stdin and uses that text as a path to open, rather than dumping stdin bytes directly. The primary purpose is related to file dumping, but the description materially overstates the supported output formats and behavior.

Content

No source excerpt is available for this finding.

Description-Behavior Mismatch

Medium
Category
Not specified by scanner
Confidence
98% confidence
Finding

The manifest describes a general-purpose od-style dumper that supports octal, decimal, hexadecimal, and ASCII output for binary inspection. The code reads bytes and prints only octal offsets and octal byte values, with no decimal, hexadecimal, or ASCII rendering logic present.

Content

No source excerpt is available for this finding.