Remote code execution in vm2 for Node.js

1) Prototype pollution

EUVDB-ID: #VU70542

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-23449

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary JavaScript code.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can perform prototype pollution attack and execute arbitrary code on the server.

Mitigation

Install update from vendor's website.

Vulnerable software versions

vm2: 3.9.0 - 3.9.3

External links

http://github.com/patriksimek/vm2/issues/363
http://snyk.io/vuln/SNYK-JS-VM2-1585918
http://github.com/patriksimek/vm2/releases/tag/3.9.4
http://github.com/patriksimek/vm2/commit/b4f6e2bd2c4a1ef52fc4483d8e35f28bc4481886
http://security.netapp.com/advisory/ntap-20211029-0010/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.