T08 · Insecure Dependencies
Warning
- Location
SKILL.md:14- Finding
Unpinned Third-Party MCP Server Installation
- Content
View full analysis
Vulnerability Details
File Location:
SKILL.md, lines 14-25
Vulnerability Type: Unpinned external dependency installation
Risk Level: Mediumbash ### Install ```bash pip install ovirt-engine-mcp-serverOr from source:
bash git clone https://github.com/imjoey/ovirt-engine-mcp-server.git cd ovirt-engine-mcp-server pip install -e .text ### Technical Analysis The Skill directs users to install an external Python package without pinning a version, commit, or package hash. The alternative installation method clones and installs the mutable default branch of an external Git repository. Consequently, the code ultimately installed can change after this Skill has been reviewed. The external MCP server implementation is not included in the audited project, so its behavior and transitive dependencies could not be verified. Python package installation may execute package build hooks, while the installed MCP server will subsequently run as a local process. If the PyPI package, maintainer account, source repository, or an unpinned transitive dependency is compromised, attacker-controlled code could be delivered through these documented installation procedures. This finding identifies a supply-chain exposure; the audit found no evidence that the currently referenced package or repository is malicious. ### Attack Path 1. An attacker compromises the referenced PyPI project, its publisher credentials, the source repository, or an unpinned transitive dependency. 2. The attacker publishes a modified release or commits malicious code to the repository's default branch. 3. A user follows the Skill instructions and runs `pip install ovirt-engine-mcp-server` or clones the mutable default branch and runs `pip install -e .`. 4. Attacker-controlled code executes during installation or when `ovirt-engine-mcp` is launched. 5. The malicious process operates with the installing user's local privileges and ...[truncated 957 chars]- Remediation
View remediation
Remediation Suggestions
- Pin the PyPI dependency to a specifically reviewed version, for example:
bash pip install "ovirt-engine-mcp-server==<reviewed-version>" - Use package hashes with
pip --require-hashesand maintain a reviewed lockfile containing all transitive dependencies. - Replace cloning of the mutable default branch with checkout of a reviewed immutable commit:
bash git clone https://github.com/imjoey/ovirt-engine-mcp-server.git cd ovirt-engine-mcp-server git checkout <reviewed-commit-hash> - Verify release signatures, repository provenance, and package hashes before installation.
- Avoid editable installations for production deployment. Build and deploy a reproducible artifact from the reviewed source revision.
- Run the MCP server under a dedicated, restricted operating-system account or container with minimal filesystem and network access.
- Configure a dedicated least-privilege oVirt service account instead of the documented broad
admin@internalaccount. - Store the oVirt password in a protected secret manager or credential provider rather than persistent plaintext client configuration.
- Establish a dependency update process requiring review and security testing before changing pinned versions or commits.
- Pin the PyPI dependency to a specifically reviewed version, for example: