T08 · Insecure Dependencies
Warning
- Location
- SKILL.md:30
- Finding
- Unpinned Third-Party Dependencies Create a Supply-Chain Risk## Vulnerability Details **File Location**: `SKILL.md`, line 30 **Vulnerability Type**: Unpinned third-party dependencies **Risk Level**: Medium **Complete Code Snippet**: ```bash - `pip install requests tos` ``` ### Technical Analysis The installation instructions retrieve the latest available versions of `requests` and `tos` without version constraints, cryptographic hashes, or a lock file. This makes the installed code mutable after the Skill has been reviewed. A compromised package release, malicious dependency update, or other package-registry supply-chain incident could cause unreviewed code to run during installation or import. This exposure is security-sensitive because the imported packages participate in network operations and execute in a process that can access `VOLCENGINE_TTS_TOKEN`, `VOLCENGINE_ACCESS_KEY`, `VOLCENGINE_SECRET_KEY`, user-provided text, and generated audio. The audit did not identify evidence that the package names are typosquatted or currently malicious; the finding concerns the absence of reproducible and integrity-verified dependency resolution. ### Attack Path 1. An attacker compromises a dependency release, a transitive dependency, or its distribution channel. 2. A user follows the documented `pip install requests tos` command. 3. The package manager resolves and installs the attacker-controlled version because no reviewed version or hash is required. 4. Malicious code executes during package installation, import, or a subsequent API call. 5. When the Skill runs, that code can read credentials available to the process, inspect user text and audio, transmit data externally, or perform actions with the process owner's permissions. ### Impact Assessment Successful exploitation could permit arbitrary code execution with the privileges of the user installing or running the Skill. It could expose Volcengine TTS and TOS credentials, synthesized text and audio, and other files or environment ...[truncated 528 chars]
- Remediation
- ## Remediation Suggestions 1. Pin each direct dependency to a reviewed, exact version, for example through a version-controlled requirements file. 2. Generate and commit a lock file that also fixes all transitive dependency versions. 3. Require cryptographic hashes during installation, such as with `pip install --require-hashes -r requirements.txt`. 4. Obtain packages only from an approved package index and verify package ownership and provenance. 5. Use automated dependency scanning and controlled update reviews before changing pinned versions. 6. Install and run the Skill in an isolated virtual environment or container under a non-privileged account. 7. Scope TOS credentials to only the required bucket, object prefix, and operations, and use short-lived credentials where supported. 8. Avoid exposing unrelated secrets to the Skill process, limiting the impact of any future dependency compromise.