T05 · Unauthorized Access and Privilege Escalation
Warning
- Location
SKILL.md:187- Finding
Overbroad File and Command Capabilities with Privilege-Elevation Guidance
- Content
View full analysis
Vulnerability Details
File Location:
SKILL.md:187-190, 194-197, 209, 228-235
Vulnerability Type: Excessive system capabilities and unsafe privilege guidance
Risk Level: MediumVulnerable Code Snippet
The following is an English translation of the relevant declarations in
SKILL.md:markdown - **File processing**: Supports reading, parsing, and writing multiple file formats - **API integration**: Calls external services through standardized interfaces and processes responses - **Command execution**: Executes system commands in a secure sandbox and collects results - **Information retrieval**: Quickly searches and filters target dataThese unrestricted capabilities are declared again:
markdown - **File processing**: Supports reading, parsing, and writing multiple file formats - **API integration**: Calls external services through standardized interfaces and processes responses - **Command execution**: Executes system commands in a secure sandbox and collects results - **Information retrieval**: Quickly searches and filters target dataThe troubleshooting guidance also recommends privilege elevation:
markdown | Insufficient permissions | The current user lacks read/write permission | Check file permissions and run as administrator |Generic file and command workflows are subsequently presented:
markdown 1. **Prepare files**: Confirm that the file path is correct and the format is supported 2. **Execute processing**: Call the corresponding processing function 3. **View results**: Check the output file or returned data 1. **Check environment**: Confirm that the runtime and dependencies are installed 2. **Execute command**: Use the correct parameter format 3. **View output**: Check command output and exit codeTechnical Analysis
The skill's stated purpose is controlling IKEA and TP-Link Kasa smart bulbs. That task ordinarily requires narro ...[truncated 3378 chars]
- Remediation
View remediation
Remediation Suggestions
- Remove the generic
read,write, andexectool permissions unless each capability is essential to a documented bulb-control operation. - Replace free-form command execution with a narrow bulb-control interface containing explicit operations such as
turn_on,turn_off,set_brightness, andset_color. - Validate all device identifiers, IP addresses, color values, and brightness values against strict schemas and configured allowlists.
- Restrict network access to explicitly configured local bulb or hub addresses. Reject loopback services, metadata endpoints, arbitrary hostnames, and unrelated private-network destinations.
- If a local utility is required, invoke a fixed executable using an argument array. Do not use a shell or concatenate user-controlled text into commands.
- If file access is genuinely necessary, confine it to a dedicated application directory, resolve canonical paths, and reject path traversal and symbolic-link escapes.
- Remove the instruction to run as administrator. Document the minimum required permissions and fail safely when those permissions are unavailable.
- Enforce sandboxing technically rather than merely claiming that commands run in a sandbox. Define file-system, process, network, and resource limits.
- Require explicit user confirmation before any state-changing device action, external network request, file write, or process execution.
- Add an implementation and security tests demonstrating that unrelated commands, arbitrary paths, unauthorized devices, and elevated execution are rejected.
- Remove the generic