T08 · Insecure Dependencies
Warning
- Location
- SKILL.md:12
- Finding
- Unpinned Third-Party Package Installation and Execution## Vulnerability Details **File Location**: `SKILL.md`, lines 12-18 **Vulnerability Type**: Unverified and unpinned third-party dependency execution **Risk Level**: Medium **Vulnerable Code**: ```bash # Install globally uv tool install wiim-cli # Or run directly without installing uvx --from wiim-cli wiim --help ``` ### Technical Analysis The instructions install or execute `wiim-cli` from an external package registry without specifying a reviewed version, cryptographic hash, lockfile, trusted repository, or verified publisher. The `uv tool install` command installs executable third-party package code, while `uvx` retrieves and runs that code directly. Package registry content is mutable and lies outside the audited project. Therefore, the code ultimately executed may differ from the code that was available when this skill was reviewed. A compromised maintainer account, malicious package release, dependency confusion event, or compromised transitive dependency could introduce arbitrary executable code. The audited project contains no implementation code demonstrating an active malicious payload. This finding concerns the unsafe supply-chain execution pattern established by the documented commands. ### Attack Path 1. An attacker compromises the `wiim-cli` package, its publisher account, the package registry entry, or a transitive dependency. 2. The attacker publishes a malicious release that includes harmful installation-time or runtime behavior. 3. A user or agent follows the instructions in `SKILL.md`. 4. `uv tool install wiim-cli` or `uvx --from wiim-cli wiim --help` resolves the latest acceptable mutable package release. 5. The malicious package or dependency executes with the privileges and environment access of the invoking user. ### Impact Assessment Successful exploitation could provide arbitrary code execution under the invoking user's account. Depending on that account's permissions and environment, ...[truncated 495 chars]
- Remediation
- ## Remediation Suggestions - Pin `wiim-cli` to a specifically reviewed version rather than resolving an unspecified current release. - Verify the package against cryptographic hashes and maintain a lockfile containing all resolved transitive dependencies. - Document the canonical source repository and verified package publisher so users can validate provenance. - Audit the selected release and its transitive dependencies before recommending execution. - Avoid direct `uvx` execution of mutable package releases. Use a controlled, pre-reviewed artifact instead. - Run the tool in an isolated, least-privileged environment with restricted filesystem, credential, and network access. - Use automated dependency scanning and periodically review pinned versions before updating them.