T08 · Insecure Dependencies
- Location
SKILL.md:147- Finding
Unpinned Third-Party Dependency Installation
- Content
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Vulnerability Details
File Location:
SKILL.md, line 147
Vulnerability Type: Supply-chain exposure caused by unpinned dependencies
Risk Level: MediumComplete Code Snippet:
bash pip install PyMuPDF openpyxl reportlabTechnical Analysis
The documented installation command installs three third-party packages without version constraints, integrity hashes, a lock file, or an explicitly trusted package index. Consequently, package resolution depends on the mutable state of the configured Python package index when installation occurs.
This does not prove that any named dependency is currently malicious. However, it creates supply-chain exposure: a compromised upstream release, compromised package-index account, or attacker-controlled index configuration could cause users to install code that was not reviewed as part of this Skill. Python packages may execute build or installation logic, and their imported modules execute in the context of the user running the Skill.
Attack Path
- A user follows the dependency-installation instruction in
SKILL.md. pipresolves the latest compatible package releases through the user's configured package indexes.- An attacker compromises an upstream release or influences resolution through a hostile or misconfigured package index.
pipdownloads and installs the attacker-controlled package or release because no version or artifact hash is enforced.- Malicious code executes during package installation, package build, or subsequent import by the document-processing workflow.
Impact Assessment
Exploited dependency code would normally run with the privileges of the user invoking
pipor the report-generation workflow. It could access files and environment variables available to that user, alter generated reports, process sensitive schematic or review data, establish network connections, or modify user-writable resources....[truncated 339 chars]
- A user follows the dependency-installation instruction in
- Remediation
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Remediation Suggestions
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Replace the free-form installation command with a reviewed, version-pinned dependency manifest.
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Pin exact versions rather than using open-ended or broad version ranges.
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Record cryptographic hashes for every approved artifact and install with hash verification, for example:
bash python -m pip install --require-hashes -r requirements.txt -
Generate and review a lock file that includes transitive dependencies.
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Explicitly use a trusted package index and disable unintended supplemental indexes where operationally appropriate.
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Install dependencies inside an isolated virtual environment under a non-privileged account.
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Periodically scan and update pinned dependencies through a controlled review process rather than resolving mutable latest versions at installation time.
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Document supported Python and dependency versions so users can reproduce the reviewed environment.
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