T08 · Insecure Dependencies
Warning
- Location
- requirements.txt:1
- Finding
- Automatic Installation of an Unpinned Third-Party Dependency## Vulnerability Details **File Location**: `requirements.txt:1` (installation instruction at `SKILL.md:20-25`) **Vulnerability Type**: Unpinned and unverified third-party dependency **Risk Level**: Medium ### Vulnerable Code `requirements.txt:1`: ```text pywizlight ``` The dependency is installed automatically as directed by `SKILL.md:20-25`: ```bash # 1. Create Virtual Environment and Install Dependencies python3 -m venv venv && source venv/bin/activate && pip install -r requirements.txt ``` ### Technical Analysis The requirements file specifies `pywizlight` without an exact version or cryptographic hash. The skill instructions tell the agent to run the installation automatically when the virtual environment does not exist. Consequently, the package installer resolves and downloads whichever compatible release is available at installation time. This makes installations non-reproducible and leaves the skill exposed to upstream package compromise, malicious release replacement, or unexpected security and behavior changes in future versions. Python packages may execute build-backend or installation-related code, and imported dependency code executes with the privileges of the user running the skill. No evidence indicates that the currently named package is malicious. The confirmed issue is the absence of dependency pinning and integrity verification combined with automatic installation. ### Attack Path 1. An attacker compromises the upstream dependency, a maintainer account, or the applicable package distribution channel. 2. The attacker publishes or substitutes a malicious release under the expected package name. 3. The agent follows the mandatory setup instruction and executes `pip install -r requirements.txt`. 4. Because no version or hash is specified, `pip` accepts the attacker-controlled release if selected by dependency resolution. 5. Malicious package code executes during installation, import, or su ...[truncated 493 chars]
- Remediation
- ## Remediation Suggestions 1. Pin `pywizlight` to an exact, reviewed version rather than allowing unconstrained resolution. 2. Generate a lock file containing cryptographic hashes for all direct and transitive dependencies. 3. Install with hash enforcement, such as `pip install --require-hashes -r requirements.txt`. 4. Review dependency release notes and security advisories before updating the pinned version. 5. Obtain explicit user approval before installing packages instead of directing the agent to install them automatically. 6. Use a trusted package index and, where practical, an internally controlled mirror containing approved artifacts. 7. Run installation and the skill in an isolated, least-privileged environment with restricted filesystem and network access.