title: Inspect method manipulation in vm2
description: vm2 is a sandbox that can run untrusted code with Node's built-in modules. 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`. As a result a threat actor can edit options for the `console.log` command. This vulnerability was patched in the release of version `3.9.18` of `vm2`. Users are advised to upgrade. Users unable to upgrade may make the `inspect` method readonly with `vm.readonly(inspect)` after creating a vm.
problem types: CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
affected:
{
vendor: patriksimek
product: vm2
versions:
version: < 3.9.18, status: affected
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 5.3
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: LOW
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
version: 3.1
]