T08 · Insecure Dependencies
Warning
- Location
- skill.md:44
- Finding
- Unpinned Third-Party Package Installation## Vulnerability Details **File Location**: `skill.md:44` **Vulnerability Type**: Unpinned dependency installation from the default Python package index **Risk Level**: Medium ### Vulnerable Code ```bash pip install xfire ``` ### Technical Analysis The installation instruction retrieves and installs `xfire` without specifying an audited version, cryptographic hash, lock file, or explicitly trusted package source. Consequently, the installed artifact can change after this Skill has been reviewed. This creates a supply-chain risk: compromise of the package publisher account, distribution channel, or a future package release could cause users to install attacker-controlled code. Python packages may execute code during installation, and malicious runtime behavior could also execute when users invoke the installed `xfire` command. The risk is particularly relevant because the documented workflow processes repository source code and uses credentials such as `ANTHROPIC_API_KEY`, `OPENAI_API_KEY`, `GOOGLE_API_KEY`, and `GITHUB_TOKEN`. ### Attack Path 1. An attacker compromises the `xfire` package publisher account or its release pipeline and publishes a malicious release. 2. A user follows the documented `pip install xfire` instruction. 3. Package resolution selects the current malicious release because no trusted version or hash is pinned. 4. Attacker-controlled code executes during installation or when the `xfire` command is invoked. 5. The malicious package accesses data available to the process, potentially including source repositories, API keys, GitHub credentials, configuration files, and cached review data. 6. The package exfiltrates that data or performs other actions with the invoking user's privileges. ### Impact Assessment Successful exploitation could execute arbitrary code with the privileges of the user running `pip` or `xfire`. Depending on the execution environment, exposed assets may include: - Source code and Git history from repositories ...[truncated 394 chars]
- Remediation
- ## Remediation Suggestions 1. Pin installation to a specifically audited release rather than allowing unconstrained resolution: ```bash python -m pip install "xfire==<audited-version>" ``` 2. Publish cryptographic hashes through a reviewed requirements or lock file and require hash verification: ```bash python -m pip install --require-hashes -r requirements.txt ``` 3. Generate the lock file from a trusted build process, review all transitive dependencies, and commit it to a version-controlled official repository. 4. Link the documentation to the verified official package and source repository. Document publisher identity and package authenticity checks. 5. In CI, install dependencies in an isolated, least-privileged environment without unnecessary credentials. Provide API keys only to the execution step that requires them. 6. Use narrowly scoped, short-lived GitHub and API tokens, restrict outbound network access where feasible, and avoid exposing unrelated repositories or host files to the review process. 7. Establish release signing, protected publisher accounts with multifactor authentication, and automated monitoring for unexpected package releases or dependency changes.