T08 · Insecure Dependencies
- Location
SKILL.md:57- Finding
Unpinned Dependencies Installed into the System Python Environment
- Content
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Vulnerability Details
File Location:
SKILL.md, lines 57-59
Vulnerability Type: Unpinned third-party dependencies and unsafe system-level package installation
Risk Level: MediumVulnerable Code
bash pip3 install Pillow numpy pillow-heif --break-system-packagesTechnical Analysis
The documented installation command installs
Pillow,numpy, andpillow-heifwithout fixed versions or package hashes. Consequently, the exact code installed depends on the package releases available when the command is executed rather than on versions reviewed with this project.The
--break-system-packagesoption bypasses protections intended to prevent pip from modifying an externally managed system Python installation. This can overwrite or conflict with operating-system-managed packages and expands the effect of a dependency compromise beyond an isolated project environment.Attack Path
- An attacker compromises a listed package, a package maintainer account, or the relevant distribution channel.
- The attacker publishes a malicious release under one of the dependency names.
- A user follows the installation command in
SKILL.md. - Because no versions or hashes are pinned, pip resolves and downloads the malicious release.
- Malicious installation or runtime code executes with the privileges of the user running pip.
- Because the command targets system Python, the compromised package may also affect other applications that use the same Python environment.
Impact Assessment
Successful exploitation can execute attacker-controlled code with the invoking user's privileges. This may permit access to that user's files, environment variables, application data, and network capabilities. If the command is run by an administrator or through privilege elevation, the impact may extend to system-wide code execution and modification.
Even without a malicious dependency, modifying system Python can ...[truncated 227 chars]
- Remediation
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Remediation Suggestions
- Remove
--break-system-packagesand install dependencies in a dedicated virtual environment:bash python3 -m venv .venv . .venv/bin/activate python3 -m pip install --require-hashes -r requirements.txt - Pin every dependency and transitive dependency to a reviewed version.
- Record cryptographic hashes in the requirements file and enforce them with
--require-hashes. - Periodically review and update pinned dependencies after security testing.
- Use a trusted package index explicitly where appropriate and prohibit unreviewed supplemental indexes.
- Run the image-processing scripts as an unprivileged user with access limited to the required input and output directories.
- Remove
