T05 · Unauthorized Access and Privilege Escalation
- Location
SKILL.md:8- Finding
Unnecessary Unrestricted Command Execution Capability
- Content
View full analysis
Vulnerability Details
File Location:
SKILL.md, lines 8–10
Vulnerability Type: Excessive tool permissions violating least privilege
Risk Level: MediumVulnerable Code:
yaml tools: - read - execTechnical Analysis
The skill declares access to the general-purpose
exectool, but the project contains only a documentation file and defines no executable workflow, command, script, or other operation that legitimately requires shell access. Granting command-execution capability therefore exceeds the minimum privileges needed by the documented financial analysis and visualization functionality.Although no malicious command or direct exploitation instruction is present, an agent that grants this capability could use it while interpreting later untrusted financial data or user-controlled task content. If such content influences agent behavior, it could cause local commands to be executed with the privileges of the hosting agent process.
Attack Path
- The skill is loaded by an agent platform.
- The platform grants the declared
execcapability. - The agent subsequently processes attacker-controlled financial data, document content, or task instructions.
- Malicious content persuades or induces the agent to invoke
exec. - Commands run in the host environment under the agent process's operating-system permissions.
This is a potential exploitation path arising from excessive privilege. The audited project itself does not contain a command payload or an instruction that directly triggers execution.
Impact Assessment
Successful exploitation could permit command execution within the security context of the agent process. Depending on host sandboxing and operating-system permissions, this may expose accessible local files, environment variables, credentials, network resources, or allow modification of files available to the agent. The scope is limited by the platform's sandbox, to ...[truncated 62 chars]
- Remediation
View remediation
Remediation Suggestions
- Remove
execfrom the declared tool list because the current documentation-only skill does not require command execution. - Retain only the minimum tool permissions necessary for the documented functionality, such as read-only access where justified.
- If command execution is added in a future implementation, replace unrestricted shell access with narrowly scoped operations.
- Enforce command and executable allowlists, strict argument validation, fixed working directories, execution timeouts, resource limits, and sandboxing.
- Run the agent under a dedicated low-privilege account with restricted filesystem and network access.
- Prevent untrusted financial data and document text from being treated as executable instructions.
- Require explicit user approval for any security-sensitive execution and maintain auditable logs of invoked commands and arguments.
- Remove