T08 · Insecure Dependencies
Warning
- Location
- SKILL.md:104
- Finding
- Unpinned Third-Party Dependency Installation<![CDATA[ ## Vulnerability Details **File Location**: `SKILL.md`, lines 104-107 **Vulnerability Type**: Unpinned and unverifiable third-party dependency **Risk Level**: Medium ### Vulnerable Code ```bash pip install Pillow ``` ### Technical Analysis The documented installation command retrieves the latest version of Pillow available from the package index at installation time. It does not specify an audited version, validate package hashes, or use a reproducible lock file. Consequently, the dependency resolved during installation may differ from the version originally reviewed. A compromised upstream release, package-index account, configured package mirror, or dependency resolution environment could introduce malicious installation or runtime code. This finding does not establish that Pillow itself is malicious. The issue is the absence of controls that guarantee which dependency artifact will be installed. ### Attack Path 1. An attacker compromises an upstream release channel, package-index account, or package mirror used by the environment. 2. The attacker publishes or substitutes a malicious dependency artifact that satisfies the unrestricted `Pillow` requirement. 3. A user follows the documented `pip install Pillow` command. 4. The package manager retrieves and installs the attacker-controlled artifact. 5. Malicious installation or imported runtime code executes with the privileges of the user running `pip`. ### Impact Assessment Successful exploitation could execute arbitrary code in the installation environment with the invoking user's privileges. Potential impact includes: - Reading or modifying files accessible to the user. - Accessing environment variables and credentials available to the process. - Modifying the Python environment or installed packages. - Establishing additional persistence if the invoking account has sufficient permissions. - Full system compromise if installation is performed by an administrator or through `sudo`. The S ...[truncated 128 chars]
- Remediation
- <![CDATA[ ## Remediation Suggestions 1. Pin Pillow to a specifically reviewed version in a requirements file: ```text Pillow==<reviewed-version> ``` 2. Generate and verify cryptographic hashes for the approved distribution files: ```text Pillow==<reviewed-version> \ --hash=sha256:<approved-wheel-hash> ``` 3. Install with hash enforcement: ```bash python -m pip install --require-hashes -r requirements.txt ``` 4. Use a virtual environment and avoid installing dependencies with administrator privileges. 5. Periodically review and update the pinned version to incorporate security patches. 6. Obtain packages only from an explicitly trusted package index or internal mirror. 7. Add the lock file or hashed requirements file to the project so installations are reproducible. ]]>