T08 · Insecure Dependencies
Warning
- Location
- SKILL.md:21
- Finding
- Unpinned Third-Party Executable Dependencies<![CDATA[ ## Vulnerability Details **File Location**: `SKILL.md`, lines 21-26 **Vulnerability Type**: Supply-chain risk from unpinned executable dependencies **Risk Level**: Medium ### Vulnerable Code ```bash pip install yt-dlp spotdl brew install ffmpeg # needed by yt-dlp for audio extraction # optional pip install bandcamp-dl # for free bandcamp downloads ``` ### Technical Analysis The documented setup installs third-party executable packages without fixed versions, cryptographic hashes, a lockfile, or explicit trusted repository constraints. Consequently, the code installed by the same instructions can change over time without any corresponding change to the reviewed skill. Python packages can execute code during installation and subsequently when their command-line entry points are invoked. The Homebrew package is similarly obtained from a mutable external package ecosystem. A compromised upstream release, compromised package account, dependency-confusion event, or malicious transitive dependency could therefore introduce code that was not included in this audit. There is no evidence that the currently named packages are malicious. The vulnerability is the absence of controls ensuring that future installations resolve to reviewed artifacts. ### Attack Path 1. An attacker compromises a named package, one of its transitive dependencies, or the relevant distribution channel. 2. The attacker publishes a malicious release under a version accepted by the unpinned installation command. 3. A user or agent follows the skill instructions and runs `pip install` or `brew install`. 4. The package manager retrieves the mutable malicious release. 5. Malicious code executes during installation or when `yt-dlp`, `spotdl`, `bandcamp-dl`, or `ffmpeg` is subsequently invoked. ### Impact Assessment Successful exploitation can provide arbitrary code execution with the privileges of the user performing installation or running the installed tools. This may expose fil ...[truncated 546 chars]
- Remediation
- <![CDATA[ ## Remediation Suggestions 1. Pin every Python package to a reviewed, exact version. 2. Maintain a lockfile containing all transitive dependency versions. 3. Require cryptographic hashes, such as with `pip install --require-hashes -r requirements.txt`. 4. Explicitly use trusted package indexes and disable unintended extra indexes. 5. Pin or otherwise document a reviewed Homebrew formula version or immutable package artifact. 6. Install Python dependencies inside a dedicated virtual environment or isolated container. 7. Add automated dependency scanning and update dependencies only through reviewed changes. 8. Verify package publisher identities, release signatures, checksums, and expected package names before installation. ]]>