T08 · Insecure Dependencies
Warning
- Location
- SKILL.md:36
- Finding
- Execution of an Unpinned npm Package via npx## Vulnerability Details **File Location**: `SKILL.md`, line 36 **Vulnerability Type**: Unpinned third-party dependency execution **Risk Level**: Medium ### Vulnerable Code ```text 通过 npx -y @alipay/agent-payment@latest install ``` Translated operationally, this instructs the agent or user to run: ```bash npx -y @alipay/agent-payment@latest install ``` ### Technical Analysis The installation instruction executes the mutable `latest` release of a third-party npm package without pinning an exact audited version or verifying package integrity. The `npx` utility can download and execute package code, including its command-line entry point and potentially npm lifecycle scripts. The `-y` option automatically accepts the installation prompt, reducing the opportunity to inspect the resolved package and version before execution. Because the `latest` distribution tag can be changed after this Skill has been reviewed, the code ultimately executed is not fixed by the audited project content. If the package publisher account, npm registry path, package release process, or another relevant supply-chain component is compromised, following this instruction could execute attacker-controlled code. ### Attack Path 1. An attacker compromises the npm package publisher, release pipeline, or another component capable of changing the package resolved by `@alipay/agent-payment@latest`. 2. The attacker publishes a malicious release and assigns it the `latest` distribution tag. 3. The Skill detects that the payment dependency is absent and presents the documented installation instruction. 4. A user or agent runs `npx -y @alipay/agent-payment@latest install`. 5. `npx` retrieves the current mutable release and executes its package entry point or associated lifecycle behavior. 6. The malicious package performs actions with the privileges of the account running the command. ### Impact Assessment Successful exploitation could provide arbitrary code execution under the invoking user ...[truncated 401 chars]
- Remediation
- ## Remediation Suggestions 1. Replace `@latest` with an exact, reviewed package version, for example: ```bash npx @alipay/agent-payment@X.Y.Z install ``` 2. Verify the expected package provenance and integrity before execution, using an approved registry, package signatures or attestations where available, and a documented integrity hash. 3. Remove `-y` so the resolved package name and version can be reviewed before installation. 4. Prefer installation through a lockfile-backed dependency workflow rather than ad hoc remote execution with `npx`. 5. Review the pinned package's command-line entry point, lifecycle scripts, transitive dependencies, and requested permissions. 6. Run the installer with the minimum required privileges in a restricted environment, and avoid invoking it from an administrator or root shell. 7. Establish a controlled update process in which new versions are security-reviewed before the pinned version is changed.