T08 · Insecure Dependencies
Warning
- Location
- SKILL.md:45
- Finding
- Unpinned Third-Party Python Package Installation## Vulnerability Details **File Location**: `SKILL.md`, line 45 **Vulnerability Type**: Unpinned and unverified third-party dependency **Risk Level**: Medium ```bash pip install tianyancha ``` ### Technical Analysis The documented installation command retrieves the latest available version of the `tianyancha` package from pip's configured package index. It does not specify an audited version, verify package hashes, identify an authoritative publisher, or use a dependency lockfile. Python package installation may execute package-controlled build or installation logic. Consequently, compromise of the referenced package, its publisher account, or the configured package index could cause attacker-controlled code to execute during installation. The repository does not include the package implementation or other evidence establishing that this dependency is an official, reviewed SDK. ### Attack Path 1. An attacker compromises the referenced package, its publisher account, or a package index used by the victim. 2. The attacker publishes a malicious release containing installation-time or import-time code. 3. A user follows the Skill documentation and runs `pip install tianyancha`. 4. Because no exact version or integrity hash is required, pip resolves and downloads the malicious release. 5. Attacker-controlled code executes during package installation or when the package is subsequently imported. ### Impact Assessment Successful exploitation could execute arbitrary code with the privileges of the user running pip or the Python application. Depending on those privileges, the attacker could access application files, environment variables, API credentials, local user data, and network resources; alter the Python environment; or install additional payloads. The scope is normally limited to the installing user's permissions unless installation is performed with elevated privileges.
- Remediation
- ## Remediation Suggestions - Confirm that the package is an official or otherwise trusted SDK and document its authoritative publisher and repository. - Pin a reviewed, exact version rather than resolving the latest release. - Record cryptographic hashes in a requirements file and install with `pip install --require-hashes -r requirements.txt`. - Use a lockfile and a controlled package index or approved internal mirror. - Review package source, release history, and transitive dependencies before approval. - Perform installation inside an isolated virtual environment or container without administrative privileges. - Add automated dependency vulnerability, provenance, and integrity checks to the maintenance process.