T08 · Insecure Dependencies
- Location
scripts/install.sh:27- Finding
Unpinned PyPI Package Installation Allows Mutable Supply-Chain Code Execution
- Content
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Vulnerability Details
File Location:
scripts/install.sh, lines 27-33
Vulnerability Type: Unpinned third-party dependency installation
Risk Level: HighComplete Code Snippet
bash # Install tradememory-protocol from PyPI echo "" echo "Installing tradememory-protocol..." python3 -m pip install --upgrade tradememory-protocol # Verify installation echo "" python3 -c "import tradememory; print('[OK] tradememory-protocol installed successfully')"Technical Analysis
The installer downloads
tradememory-protocolfrom PyPI without an exact version or cryptographic hash. The--upgradeoption explicitly directs pip to select the newest release available at installation time. Consequently, the effective code installed and imported can change after this skill has been reviewed.Python package installation may execute package build logic, while the subsequent verification command imports the installed package. A compromised package release, maintainer account, build artifact, or transitive dependency could therefore cause attacker-controlled code to run under the identity of the user invoking the script.
Attack Path
- An attacker compromises the PyPI project, a maintainer account, its release pipeline, or a transitive dependency.
- The attacker publishes a malicious version that remains compatible with the unrestricted installation command.
- A user runs
scripts/install.sh. pip install --upgraderetrieves the attacker-controlled release.- Malicious code executes during package installation, build processing, or the subsequent
import tradememory. - The payload operates with the invoking user's permissions and can access resources available to that account.
Impact Assessment
Successful exploitation could provide arbitrary code execution with the privileges of the user running the installer. The accessible scope may include the user's files, environment variables, ...[truncated 236 chars]
- Remediation
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Remediation Suggestions
- Pin
tradememory-protocolto an exact, reviewed version rather than using an unrestricted package name. - Remove
--upgradefrom the installation path so later releases are not selected implicitly. - Use a lock file or requirements file containing exact versions for all transitive dependencies.
- Require package hashes, for example through pip's
--require-hashesmechanism. - Obtain hashes from a trusted release process and verify signatures or provenance attestations where available.
- Install dependencies into a dedicated virtual environment with minimal filesystem and credential access.
- Perform verification without importing untrusted code until package integrity and provenance have been established.
- Pin
