T08 · Insecure Dependencies
Warning
- Location
- SKILL.md:266
- Finding
- Unverified Third-Party Package Installation## Vulnerability Details **File Location**: `SKILL.md:266` **Vulnerability Type**: Supply-chain exposure through an unverified public package **Risk Level**: Medium ### Vulnerable Code ```bash pip install langchain-scavio==4.0.2 ``` ### Technical Analysis The Skill instructs users to install `langchain-scavio` from pip's configured package index. Although the package version is pinned, the instruction does not provide package hashes, a reviewed source reference, a locked set of transitive dependencies, or signature verification. Installing a Python package can execute package build hooks or other installation-related code with the privileges of the user running pip. Pinning only the direct package version does not ensure the integrity of the downloaded artifact or its transitive dependencies. This installation is optional because the Skill already documents direct HTTPS API requests using `requests`. No evidence in the audited file establishes that `langchain-scavio==4.0.2` is malicious; the finding concerns the unverified supply-chain trust introduced by the installation instruction. ### Attack Path 1. An attacker compromises the named package, one of its transitive dependencies, or the package-index account used to publish it. 2. A user follows the Skill documentation and runs `pip install langchain-scavio==4.0.2`. 3. Pip retrieves the package and dependencies from its configured external index without validating project-supplied cryptographic hashes. 4. Malicious installation hooks or subsequently imported package code execute in the user's environment. 5. The payload operates with the permissions of the account or automation process that performed the installation. ### Impact Assessment Successful exploitation could permit arbitrary code execution with the installing user's privileges. Depending on the execution environment, the affected scope could include: - Files and credentials accessible to the current user. - Environment variables, potentia ...[truncated 343 chars]
- Remediation
- ## Remediation Suggestions 1. Remove the optional package installation instruction when the documented HTTPS API workflow is sufficient. 2. If the integration must be retained, publish a reviewed requirements or lock file containing the complete transitive dependency graph. 3. Pin every dependency to an exact version and include cryptographic hashes. Install with a command such as: ```bash python -m pip install --require-hashes -r requirements.txt ``` 4. Document the authoritative package source and link to the reviewed source repository and release commit. 5. Verify package provenance or signatures where supported by the distribution process. 6. Install the package inside an isolated virtual environment or container under a non-privileged account. 7. Avoid installing packages with administrator privileges, and limit filesystem, secret, and network access during installation and execution. 8. Continuously scan the package and its transitive dependencies for known vulnerabilities and unexpected ownership or release changes.