#VU70543 Improper access control in vm2 - CVE-2021-23555

Vulnerability identifier: #VU70543

Vulnerability risk: High

CVSSv4.0: 6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-23555

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
vm2
Web applications / Modules and components for CMS

Vendor: Patrik Simek

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to sandbox bypass via direct access to host error objects generated by node internals during generation of a stacktraces. A remote attacker can execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

vm2: 3.9.0 - 3.9.5

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External links
https://snyk.io/vuln/SNYK-JS-VM2-2309905
https://github.com/patriksimek/vm2/commit/532120d5cdec7da8225fc6242e154ebabc63fe4d

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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.