T08 · Insecure Dependencies
Warning
- Location
- SKILL.md:92
- Finding
- Unpinned Third-Party Dependency Installation## Vulnerability Details **File Location**: `SKILL.md:92-100` **Vulnerability Type**: Unpinned and unverified third-party dependency **Risk Level**: Medium ### Vulnerable Code ```markdown ## Dependencies - Python 3.6+ - Pillow (PIL) - Standard Python imaging library Install Pillow if needed: ```bash pip3 install Pillow ``` ``` ### Technical Analysis The documented installation command asks users to install Pillow without a version constraint, lockfile, package hash, or isolated environment. Consequently, `pip3` resolves a mutable package version from its configured package index at installation time. Although the audit found no evidence that Pillow itself is malicious, this dependency practice creates a supply-chain exposure. If the upstream package, maintainer account, distribution artifact, or configured package index were compromised, installation could introduce attacker-controlled code that was not part of the reviewed Skill. Package installation behavior and subsequently imported library code execute with the permissions of the user running the command. ### Attack Path 1. An attacker compromises the relevant upstream release process, package repository, maintainer account, or package index used by the victim. 2. The attacker publishes or substitutes a malicious Pillow distribution that satisfies the unconstrained package name. 3. A user follows the Skill documentation and runs `pip3 install Pillow`. 4. `pip3` resolves and installs the attacker-controlled distribution because no approved version or artifact hash is enforced. 5. Malicious installation behavior or imported package code executes with the privileges of the invoking user. ### Impact Assessment Successful exploitation could execute arbitrary code with the permissions of the user who installs or runs the dependency. Depending on that user's privileges and environment, the attacker could access or modify user-readable files, alter the Pytho ...[truncated 212 chars]
- Remediation
- ## Remediation Suggestions 1. Pin Pillow to a reviewed, supported version in a dependency file rather than installing an unconstrained latest release. 2. Generate and verify cryptographic hashes for approved distribution artifacts, then install with: ```bash python3 -m pip install --require-hashes -r requirements.txt ``` 3. Use a dedicated virtual environment so the dependency cannot modify a shared or system-wide Python installation: ```bash python3 -m venv .venv . .venv/bin/activate python3 -m pip install --require-hashes -r requirements.txt ``` 4. Review and update the pinned version through a controlled dependency-update process that includes vulnerability scanning and testing. 5. Configure `pip` to use a trusted package index and avoid installing with administrative or root privileges.