#VU61253 Improper Certificate Validation in Node.js - CVE-2021-22939

Vulnerability identifier: #VU61253

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-22939

CWE-ID: CWE-295

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Node.js
Server applications / Web servers

Vendor: Node.js Foundation

Description

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

The vulnerability exists due to incomplete validation of rejectUnauthorized parameter. A remote attacker can cause the connections to servers with an expired certificate would have been accepted.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Node.js: 12.0.0, 12.1.0 - 12.19.1, 12.2.0 - 12.22.4, 12.3.0 - 12.3.1, 12.4.0, 12.5.0, 12.6.0, 12.7.0, 12.8.0 - 12.8.1, 12.9.0 - 12.9.1, 14.0.0, 14.1.0 - 14.17.4, 14.2.0, 14.3.0, 14.4.0, 14.5.0, 14.6.0, 14.7.0, 14.8.0, 14.9.0, 16.0.0, 16.1.0, 16.2.0, 16.3.0, 16.4.0 - 16.4.2, 16.5.0, 16.6.0 - 16.6.1

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External links
https://hackerone.com/reports/1278254
https://nodejs.org/en/blog/vulnerability/aug-2021-security-releases/
https://security.netapp.com/advisory/ntap-20210917-0003/
https://www.oracle.com/security-alerts/cpuoct2021.html
https://www.oracle.com/security-alerts/cpujan2022.html

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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.