T05 · Unauthorized Access and Privilege Escalation
- Location
SKILL.md:21- Finding
Overprivileged Tool Access and Unsafe Privilege-Escalation Guidance
- Content
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Vulnerability Details
File Location:
SKILL.md, lines 21–24 and 231–275
Vulnerability Type: Excessive tool permissions and unsafe operational guidance
Risk Level: MediumVulnerable Code Snippets
Lines 21–24 declare broad filesystem and command-execution capabilities:
yaml tools: - read - exec - writeLines 231, 257–263, and 275 additionally instruct the operator to modify permissions, execute system commands, or run with administrator privileges. English translations of the relevant source text are:
text Modify filesystem and command-execution permissions. Execute system commands in a secure sandbox and collect the results. If the current user lacks read or write permission, check file permissions and run as administrator.Technical Analysis
The skill is presented as a security-auditing tool, but it requests unrestricted
read,exec, andwritecapabilities. Many auditing operations can be completed using read-only access and narrowly constrained analysis commands. The documentation does not define:- Filesystem path restrictions.
- A command allowlist.
- Mandatory user confirmation before execution or modification.
- Argument validation for commands derived from user-controlled input.
- A prohibition against privilege escalation.
- Separation between read-only auditing and active remediation.
The troubleshooting guidance compounds this excessive permission model by recommending permission changes or administrator execution when access is denied. A permission failure should ordinarily be treated as a security boundary, not as an instruction to increase privileges automatically.
No executable implementation is included in the project, so the audit cannot confirm that privilege escalation or arbitrary command execution occurs automatically. The risk arises from the combination of broad declared capabilities and operational instructions that encourage bypassing ...[truncated 1656 chars]
- Remediation
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Remediation Suggestions
- Default the skill to read-only operation and remove
writeunless the user explicitly requests remediation. - Separate audit and remediation modes. Require clear, per-operation user approval before enabling file modifications.
- Restrict
readandwriteoperations to an explicitly approved project root and reject path traversal or symlink escapes. - Replace unrestricted command execution with a minimal allowlist of audit tools and fixed argument schemas.
- Never construct shell commands by concatenating user-controlled paths, filenames, repository content, or audit instructions.
- Require explicit confirmation before every command that can change system state.
- Remove instructions recommending administrator execution or broad permission changes. Treat permission errors as hard failures unless the user independently confirms a narrowly scoped access change.
- Run all analysis commands in an isolated sandbox using an unprivileged account, a read-only project mount, disabled network access by default, and strict resource limits.
- Log approved executions and writes without recording credentials or other sensitive values.
- Document concrete command, path, network, and privilege boundaries rather than relying on the unsupported statement that execution occurs in a secure sandbox.
- Default the skill to read-only operation and remove