Description (CNA)
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.3, it is possible to catch a host exception using the yield* expression inside an async generator. When the generator is closed using the return function, the value is awaited on and exceptions thrown in the then call will be caught by the runtime and passed to the yield* iterator as the next value. This allows attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system. This vulnerability is fixed in 3.11.3.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| patriksimek / vm2 | affected < 3.11.3 |
CWE
CWE-668
References
ADP enrichment
No English description supplied.
A flaw was found in vm2 (before 3.11.3). Host exceptions can be caught from sandbox code using yield* inside an async generator; closing the generator with return() awaits the value and passes host exceptions back into the sandbox iterator, enabling escape and arbitrary host command execution. Fixed in 3.11.3.