T05 · Unauthorized Access and Privilege Escalation
- Location
SKILL.md:38- Finding
Repository Modification and Git Commit Without an Explicit Approval Checkpoint
- Content
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Vulnerability Details
File Location:
SKILL.md, lines 38-46
Vulnerability Type:T05: Unauthorized Access and Privilege Escalation
Risk Level: MediumVulnerable Code Snippet:
markdown ### 文档输出 - 将验证通过的设计写入 `docs/plans/YYYY-MM-DD-<topic>-design.md` - 提交设计文档到 git ### 继续实施（如果需要） - 询问：「准备好开始实施了吗？」 - **REQUIRED SUB-SKILL:** 使用 `core-writing-plans` 创建详细实施计划Technical Analysis
The Skill's primary purpose is collaborative brainstorming and design development. However, after validating a design, it instructs the Agent to write a file into the current repository and commit that file to Git. It does not require a separate, explicit authorization checkpoint immediately before either operation.
Writing repository files and modifying Git history are state-changing actions that exceed the permissions required merely to discuss or present a design. The instruction to invoke the required
core-writing-planssub-Skill also expands execution beyond the behavior available for review in this package. The referenced sub-Skill is not included in the audited project, so its permissions and side effects cannot be verified here.The issue does not demonstrate operating-system privilege escalation or credential theft. Its scope is unauthorized use of repository write and version-control privileges already available to the Agent.
Attack Path
- A user invokes the Skill for brainstorming or design assistance.
- The Agent gathers requirements and presents a design for validation.
- Once the design is considered validated, the Skill directs the Agent to create a file under
docs/plans/. - The Agent performs the write without obtaining explicit authorization specifically for repository modification.
- The Agent creates a Git commit without a separate approval checkpoint or a mandated review of the staged diff.
- If the implementation workflow continues, the Agent invokes `core-writing-plans ...[truncated 1049 chars]
- Remediation
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Remediation Suggestions
- Present the proposed design document in the conversation before performing any file-system operation.
- Require explicit user approval immediately before writing to
docs/plans/. - Require a second, separate approval immediately before staging or committing changes.
- Display the target path and complete diff before each repository mutation.
- Stage only the generated file by using an explicit path rather than broad staging operations.
- Check for existing staged changes and stop if unrelated changes are present.
- Make the Git commit optional rather than mandatory, and allow the user to perform it manually.
- Document the expected source, permissions, and side effects of
core-writing-plans, or make invocation optional and subject to explicit consent. - Preserve the default brainstorming workflow as read-only unless the user clearly requests repository changes.