VDB
KO
MEDIUM 5.3

GHSA-p5gc-c584-jj6v

vm2 vulnerable to Inspect Manipulation

Details

In versions 3.9.17 and lower of vm2 it was possible to get a read-write reference to the node `inspect` method and edit options for `console.log`.

### Impact A threat actor can edit options for `console.log`.

### Patches This vulnerability was patched in the release of version `3.9.18` of `vm2`.

### Workarounds After creating a vm make the `inspect` method readonly with `vm.readonly(inspect)`.

### References PoC - https://gist.github.com/arkark/c1c57eaf3e0a649af1a70c2b93b17550

### For more information

If you have any questions or comments about this advisory:

- Open an issue in [VM2](https://github.com/patriksimek/vm2)

Thanks to @arkark (Takeshi Kaneko) of GMO Cybersecurity by Ierae, Inc. for disclosing this vulnerability.

Are you affected?

Enter the version of the package you're using.

Affected packages

npm / vm2
Introduced in: 0 Fixed in: 3.9.18
Fix npm install vm2@3.9.18

References