T08 · Insecure Dependencies
Warning
- Location
SKILL.md:59- Finding
Unpinned Third-Party Package and Browser Binary Installation
- Content
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Vulnerability Details
File Location:
SKILL.md, lines 59-63
Vulnerability Type: Unpinned third-party dependencies and unverified binary installation
Risk Level: MediumVulnerable Code
bash ### Dependencies ```bash pip install playwright playwright install chromiumtext ### Technical Analysis The installation instructions retrieve the latest available Playwright package and Chromium browser binary without specifying reviewed versions, validating cryptographic hashes, or using a dependency lockfile. Consequently, the installed components can change after the Skill has been reviewed. This creates a supply-chain risk. If the selected package index, package release, browser distribution channel, or an upstream maintainer account is compromised, following these instructions could install attacker-controlled code. Python packages can execute code during installation or when imported, while a compromised browser binary executes when the automation scripts launch it. No evidence shows that the current Playwright package or Chromium binary is malicious. The finding concerns the absence of controls that ensure future installations reproduce the reviewed dependency set. ### Attack Path 1. An attacker compromises an upstream package release, package-index account, distribution endpoint, or browser artifact used by the installation commands. 2. A user follows the instructions in `SKILL.md` and installs the mutable latest release. 3. Attacker-controlled code executes during package installation, import, or browser startup. 4. The malicious component runs with the privileges of the user executing the Skill. 5. Because the Skill uses a persistent authenticated browser profile, the malicious component may access local files, browser state, or Douyin session data available to that user. ### Impact Assessment Successful exploitation could provide arbitrary code execution under the installing user's ...[truncated 393 chars]- Remediation
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Remediation Suggestions
- Pin Playwright to a reviewed, exact version, for example through a version-locked requirements file.
- Generate and commit a lockfile containing cryptographic hashes for all Python packages and transitive dependencies.
- Install dependencies with hash verification enabled, such as
pip install --require-hashes -r requirements.txt. - Pin the corresponding Playwright-managed Chromium revision and verify downloaded browser artifacts against trusted checksums where supported.
- Use only trusted package indexes and configure index URLs explicitly to reduce dependency-confusion and repository-substitution risks.
- Perform installation and browser execution in an isolated, least-privilege environment rather than under an administrative account.
- Keep the persistent browser profile outside distributable project artifacts, restrict its filesystem permissions, and avoid sharing it with unrelated automation.
- Establish a controlled dependency-update process that includes vulnerability scanning and review before changing pinned versions.