T08 · Insecure Dependencies
Warning
- Location
- requirements.txt:1
- Finding
- Unpinned Third-Party Dependencies Permit Unreviewed Package Installation## Vulnerability Details **File Location**: `requirements.txt:1-2`; installation instruction at `SKILL.md:13` **Vulnerability Type**: Supply-chain risk caused by non-reproducible dependency resolution **Risk Level**: Medium **Complete Vulnerable Code Snippet**: ```text requests>=2.31.0 urllib3>=2.0.0 ``` The dependencies are installed using the following documented command: ```bash pip install -r requirements.txt ``` ### Technical Analysis Both dependencies use lower-bound-only version constraints. Consequently, installation may resolve to any future version satisfying those constraints rather than to versions that were reviewed during this audit. No lock file, exact version constraint, package hash, or hash-verification requirement is present. Python packages can execute code during installation and whenever imported. If an eligible dependency release or the configured package index is compromised, the installation process can retrieve and execute code that was not part of the audited Skill. The resulting environment is also non-reproducible because different installation dates may produce different dependency versions. This finding concerns unsafe version resolution and integrity verification. The reviewed dependency names are legitimate and no evidence establishes that their current releases are malicious. ### Attack Path 1. An attacker compromises the release process, maintainer account, or distribution channel of an eligible dependency. 2. The attacker publishes a malicious version satisfying `requests>=2.31.0` or `urllib3>=2.0.0`. 3. A user follows the installation command in `SKILL.md`. 4. `pip` resolves the malicious release because no exact version or cryptographic hash is required. 5. Attacker-controlled code executes during package installation or when `scripts/search.py` imports the dependency. ### Impact Assessment Malicious dependency code would execute with the privileges of t ...[truncated 649 chars]
- Remediation
- ## Remediation Suggestions 1. Replace lower-bound constraints with exact, reviewed versions, for example: ```text requests==REVIEWED_VERSION urllib3==REVIEWED_VERSION ``` 2. Generate and commit a reproducible lock file containing the complete transitive dependency graph. 3. Record SHA-256 hashes for every permitted distribution and require verification during installation: ```bash python -m pip install --require-hashes -r requirements.txt ``` 4. Generate pinned artifacts through a trusted dependency-management process, such as `pip-compile --generate-hashes`. 5. Install from an explicitly configured trusted package index and avoid untrusted supplemental indexes. 6. Use automated vulnerability and release monitoring, but update pinned versions only after review and testing. 7. Perform installation and execution as a non-administrative user in an isolated virtual environment or container to reduce the impact of a compromised package.