T08 · Insecure Dependencies
- Location
SKILL.md:23- Finding
Unpinned Third-Party SDK Creates a Supply-Chain Risk
- Content
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Vulnerability Details
File Location:
SKILL.md, lines 23–35
Vulnerability Type: Unpinned third-party dependency installation
Risk Level: MediumVulnerable Code
markdown ## Prerequisites | Dependency | Version | Purpose | |---|---|---| | Python | >= 3.8 | Runtime | | wuying-agentbay-sdk | >= 1.0.0 | AgentBay SDK for sandbox code execution | ## Setup The script requires `wuying-agentbay-sdk` installed locally. Install it before first use: ```bash pip install wuying-agentbay-sdktext ### Technical Analysis The Skill directs users or agents to install `wuying-agentbay-sdk` without pinning it to a reviewed version or verifying package integrity with cryptographic hashes. The declared constraint of `>=1.0.0` permits pip to select any compatible present or future release. The SDK is legitimately required for the Skill's declared remote sandbox functionality, and no evidence indicates that the current package name is a typosquat. Nevertheless, Python package installation can execute package build and installation logic on the local system. Trusting all future compatible releases therefore extends the Skill's local execution trust boundary beyond the reviewed project. The documentation also does not specify a locked dependency set, a trusted package index, hashes, or a reproducible installation procedure. A compromise of the package publisher, package repository, release process, or an unreviewed future dependency release could consequently introduce code not present during this audit. ### Attack Path 1. An attacker compromises the SDK publisher account, distribution channel, build process, or a transitive dependency. 2. The attacker publishes a malicious release that satisfies the permissive `>=1.0.0` version constraint. 3. A user or agent follows the documented `pip install wuying-agentbay-sdk` instruction. 4. Pip resolves and downloads the malicious compatible release. 5. Malicious installation or runtime code execute ...[truncated 1235 chars]- Remediation
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Remediation Suggestions
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Pin the SDK to an exact reviewed version, for example:
bash python -m pip install "wuying-agentbay-sdk==REVIEWED_VERSION" -
Generate and publish a lockfile containing all transitive dependencies and exact versions.
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Record cryptographic hashes and require hash verification during installation:
bash python -m pip install --require-hashes -r requirements.txt -
Explicitly identify the trusted package index and prevent fallback to unintended indexes where operationally possible.
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Review new SDK versions and their transitive dependencies before updating the pin.
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Run dependency vulnerability and provenance checks in CI.
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Prefer installation in an isolated, least-privileged environment rather than a shared system Python environment.
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Avoid installing dependencies with administrator or root privileges.
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Document a controlled upgrade process so users do not replace the reviewed version with the latest release automatically.
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