#VU54625 Incorrect default permissions in Node.js - CVE-2021-22921

Vulnerability identifier: #VU54625

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-22921

CWE-ID: CWE-276

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Node.js
Server applications / Web servers

Vendor: Node.js Foundation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists in Windows installer due to incorrect default permissions for files and folders that are set by the application. A local user with access to the system can view contents of files and directories or modify them.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Node.js: 12.0.0, 12.1.0 - 12.19.1, 12.2.0 - 12.22.1, 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, 13.0.0 - 13.0.1, 13.1.0 - 13.14.0, 13.2.0, 13.3.0, 13.4.0, 13.5.0, 13.6.0, 13.7.0, 13.8.0, 13.9.0, 14.0.0, 14.1.0 - 14.17.1, 14.2.0, 14.3.0, 14.4.0, 14.5.0, 14.6.0, 14.7.0, 14.8.0, 14.9.0, 15.0.0 - 15.0.1, 15.1.0 - 15.14.0, 15.2.0 - 15.2.1, 15.3.0, 15.4.0, 15.5.0 - 15.5.1, 15.6.0, 15.7.0, 15.8.0, 15.9.0, 16.0.0, 16.1.0, 16.2.0, 16.3.0, 16.4.0

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External links
https://nodejs.org/en/blog/vulnerability/july-2021-security-releases/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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