ZX Allows Environment Variable Injection for dotenv API

Impact

This vulnerability is an Environment Variable Injection issue in dotenv.stringify, affecting google/zx version 8.3.1.

An attacker with control over environment variable values can inject unintended environment variables into process.env. This can lead to arbitrary command execution or unexpected behavior in applications that rely on environment variables for security-sensitive operations. Applications that process untrusted input and pass it through dotenv.stringify are particularly vulnerable.

Patches

This issue has been patched in version 8.3.2. Users should immediately upgrade to this version to mitigate the vulnerability.

Workarounds

If upgrading is not feasible, users can mitigate the vulnerability by sanitizing user-controlled environment variable values before passing them to dotenv.stringify. Specifically, avoid using ", ', and backticks in values, or enforce strict validation of environment variables before usage.

References

• Issue Report
• Security Policy
• Google Vulnerability Disclosure
• Patch