T08 · Insecure Dependencies
Warning
- Location
- SKILL.md:39
- Finding
- Unpinned Third-Party Tool Installation Creates a Supply-Chain Risk## Vulnerability Details **File Location**: `SKILL.md`, lines 39-43 **Vulnerability Type**: Unverified third-party dependency installation **Risk Level**: Medium ```bash brew tap farion1231/ccswitch brew install --cask cc-switch # Windows download source: # https://github.com/farion1231/cc-switch/releases ``` ### Technical Analysis The guide recommends installing `cc-switch` from a third-party Homebrew tap or downloading a release artifact from a GitHub repository. It does not pin a reviewed version or commit and does not provide a cryptographic checksum, signature, or other integrity-verification procedure. Homebrew tap definitions and release artifacts can change after this Skill has been reviewed. If the upstream account, repository, release process, or package definition is compromised, the installation instructions could cause users to install attacker-controlled code. This is classified as an insecure dependency rather than direct remote payload execution because the Skill uses conventional package and release distribution channels, but does so without adequate provenance or integrity controls. ### Attack Path 1. An attacker compromises the third-party repository, maintainer account, release pipeline, or Homebrew tap. 2. The attacker modifies the cask definition or publishes a malicious release artifact. 3. A user follows the Skill's recommended installation instructions. 4. Homebrew or the user downloads the mutable, compromised artifact. 5. The malicious package executes during installation or when `cc-switch` is launched. 6. The payload operates with the privileges of the installing user and may access files, development credentials, API configuration, and other resources available to that account. ### Impact Assessment Successful exploitation could provide arbitrary code execution under the installing user's account. The accessible scope could include source repositories, SSH credentials, API tokens, C ...[truncated 367 chars]
- Remediation
- ## Remediation Suggestions 1. Pin the dependency to a specific reviewed release and, where supported, an immutable commit or artifact identifier. 2. Publish the expected SHA-256 checksum for each supported platform and instruct users to verify it before installation. 3. Prefer signed release artifacts and document signature verification using a trusted maintainer key. 4. Identify the official distribution source and avoid presenting mutable third-party taps as the default installation path. 5. Document the minimum permissions required by `cc-switch` and advise users not to run it with administrator privileges unless strictly necessary. 6. Consider making the manual MiniMax configuration method the recommended option because it does not require installing an additional executable. 7. Periodically review pinned artifacts and update them only after validating provenance, integrity, and behavior.