#VU55560 Use-after-free in Node.js - CVE-2021-22930

Vulnerability identifier: #VU55560

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-22930

CWE-ID: CWE-416

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 vulnerable system.

The vulnerability exists due to a use-after-free error when processing HTTP/2 stream canceling requests. A remote attacker can send a specially crafted HTTP/2 request, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Node.js: 12.0.0, 12.1.0 - 12.19.1, 12.2.0 - 12.22.3, 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 - 14.17.3, 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

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External links
https://nodejs.org/en/blog/vulnerability/july-2021-security-releases-2/

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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.