T08 · Insecure Dependencies
Warning
- Location
- SKILL.md:20
- Finding
- Unpinned Third-Party Dependency Installation<![CDATA[ ## Vulnerability Details **File Location**: `SKILL.md:20-23` **Vulnerability Type**: Uncontrolled third-party dependency installation **Risk Level**: Medium ### Vulnerable Code ```bash pip3 install Pillow # or: pip install Pillow # or: python3 -m pip install Pillow ``` ### Technical Analysis The Skill instructs users or agents to install Pillow without specifying a reviewed version, verifying a package hash, using a lockfile, constraining the package index, or isolating the installation in a virtual environment. Consequently, the code installed when these commands are executed can change after the Skill has been audited. A compromised package release, package registry, mirror, or dependency could introduce malicious code. Python package installation and subsequent import may execute package-controlled code with the permissions of the user running the command. The package name is correctly spelled and obtained through normal `pip` behavior; therefore, this finding concerns insufficient supply-chain controls rather than evidence that Pillow itself is malicious. ### Attack Path 1. An attacker compromises a future Pillow release, one of its distribution artifacts, the configured Python package index, or an intermediary mirror. 2. A user or agent follows the Skill's Quick Start instructions. 3. `pip` resolves and downloads the current uncontrolled package version from the configured index. 4. Package-controlled code executes during installation or when Pillow is imported. 5. The malicious code gains access to files, environment variables, and network resources available to the invoking user. ### Impact Assessment Successful exploitation could execute arbitrary code under the invoking user's account. The accessible scope would be limited by that account and the surrounding execution environment, but it could include workspace data, user-readable files, environment variables, and locally available credentials. The instructions do not explicitly r ...[truncated 86 chars]
- Remediation
- <![CDATA[ ## Remediation Suggestions - Pin Pillow to a specifically reviewed version rather than installing the latest available release. - Place the dependency in a lockfile or hash-locked requirements file and require cryptographic hash verification, such as `pip install --require-hashes -r requirements.txt`. - Explicitly use the official Python Package Index or another trusted, controlled registry. - Install the package in a dedicated virtual environment instead of modifying the global or user Python environment. - Regularly review and deliberately update the pinned version after security and compatibility testing. - Avoid running package installation commands with `sudo`, as an administrator, or from another privileged account. ]]>