T08 · Insecure Dependencies
Error
- Location
- SKILL.md:33
- Finding
- Unpinned Proprietary Python Dependency<![CDATA[ ## Vulnerability Details **File Location**: `SKILL.md:33-37` **Vulnerability Type**: Unpinned third-party dependency **Risk Level**: High ### Vulnerable Code ```markdown ## Prerequisites - Supports Windows and macOS. - The conversion SDK must be installed first: ```bash pip install ComPDFKitConversion ``` ``` ### Technical Analysis The installation command retrieves the latest available `ComPDFKitConversion` release without specifying an audited version or requiring package hashes. The conversion script then imports and invokes this proprietary dependency directly. Because the effective dependency content can change independently of the reviewed Skill, a compromised package release, package registry account, or distribution channel could introduce malicious Python or native code. The package's internal behavior cannot be verified from the project files. No evidence shows that the current package is malicious. The vulnerability is the absence of version and artifact integrity controls. ### Attack Path 1. An attacker compromises the package publisher account, package distribution infrastructure, or a future package release. 2. The attacker publishes a modified `ComPDFKitConversion` artifact under the expected package name. 3. A user follows the documented `pip install ComPDFKitConversion` command. 4. Pip installs the unreviewed release without checking a project-provided version constraint or cryptographic hash. 5. The malicious component executes when the conversion script imports or calls the SDK. ### Impact Assessment A malicious dependency would execute with the privileges of the user running the Skill. It could potentially: - Read or modify files accessible to that user. - Access PDF and image documents submitted for conversion. - Access PDF passwords passed to the SDK. - Read environment variables and user-level credentials. - Initiate arbitrary network connections. - Alter generated conversion output. No operating-system privile ...[truncated 152 chars]
- Remediation
- <![CDATA[ ## Remediation Suggestions 1. Pin the dependency to a specifically reviewed version, for example: ```bash python -m pip install "ComPDFKitConversion==<audited-version>" ``` 2. Distribute a locked requirements file containing SHA-256 hashes and install it with: ```bash python -m pip install --require-hashes -r requirements.txt ``` 3. Obtain expected hashes from a separately authenticated source and verify each platform-specific wheel. 4. Review new SDK versions before updating the lock file. 5. Install the SDK in an isolated virtual environment with only the permissions required for conversion. 6. Where sensitive documents are processed, apply outbound network restrictions to the conversion process. 7. Document the exact supported SDK version rather than treating the latest locally installable wheel as authoritative. ]]>