T08 · Insecure Dependencies
Warning
- Location
- SKILL.md:222
- Finding
- Third-Party SDK Installation Without Integrity Verification## Vulnerability Details **File Location**: `SKILL.md`, lines 222-237 **Vulnerability Type**: `T08: Insecure Dependencies` **Risk Level**: Medium ### Vulnerable Code ```bash pip install scavio==0.15.0 ``` ```bash npm install scavio@0.15.0 ``` ### Technical Analysis The Skill recommends installing third-party Scavio SDK packages directly from public package registries. Although both dependencies are pinned to version `0.15.0`, the instructions provide no cryptographic hashes, lockfiles, package signatures, verified source references, or other integrity controls. Version pinning prevents unintended upgrades but does not protect users if the specified release, package registry, publisher account, or distribution artifact is compromised. The npm installation process may also execute package lifecycle scripts. A malicious installation script could run before the package is used or reviewed. No evidence in the audited file establishes that these packages are currently malicious. The risk arises from executing externally maintained software without sufficient integrity verification. ### Attack Path 1. An attacker compromises the package publisher account, registry infrastructure, or the referenced package release. 2. The attacker places malicious code or installation hooks in the distributed package. 3. A user or agent follows the installation command from `SKILL.md`. 4. The package manager downloads and installs the unverified artifact. 5. Malicious installation or runtime code executes with the permissions of the user running the package manager. 6. The code could inspect environment variables, including `SCAVIO_API_KEY`, access user-readable files, alter the project environment, or initiate unauthorized network connections. ### Impact Assessment Exploitation could provide arbitrary code execution with the privileges of the installing user. The accessible scope may include the project workspace, user-readable f ...[truncated 495 chars]
- Remediation
- ## Remediation Suggestions - Publish and verify cryptographic hashes for the exact Python distribution artifacts, and require hash checking during installation, such as with `pip --require-hashes`. - Supply reviewed lockfiles that pin all direct and transitive dependencies. - Document the authoritative source repositories and package publisher identities so users can verify package provenance. - Use package signatures or trusted provenance attestations where supported. - For npm, review lifecycle scripts and use `npm install --ignore-scripts` when installation scripts are not required. - Install dependencies inside an isolated virtual environment, container, or sandbox running with least privilege. - Avoid exposing unrelated secrets to the installation environment. Provide `SCAVIO_API_KEY` only at runtime and only to the process that requires it. - Add dependency scanning and software-composition analysis to detect known vulnerabilities or unexpected package changes. - Consider documenting a direct HTTPS request workflow as the default and presenting SDK installation only as an optional, separately reviewed integration.