Vulnerability identifier: #VU48569

Vulnerability risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-8277

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Node.js
Server applications / Web servers

Vendor: Node.js Foundation

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources within the application when processing a large number of DNS responses. A Node.js application that allows an attacker to trigger a DNS request for a host of their choice could trigger a denial of service condition.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Node.js: 15.2.0, 15.1.0, 15.0.0 - 15.0.1, 14.15.0, 14.14.0, 14.13.0 - 14.13.1, 14.12.0, 14.11.0, 14.10.0 - 14.10.1, 14.9.0, 14.8.0, 14.7.0, 14.6.0, 14.5.0, 14.4.0, 14.3.0, 14.2.0, 14.1.0, 14.0.0, 13.14.0, 13.13.0, 13.12.0, 13.11.0, 13.10.0 - 13.10.1, 13.9.0, 13.8.0, 13.7.0, 13.6.0, 13.5.0, 13.4.0, 13.3.0, 13.2.0, 13.1.0, 13.0.0 - 13.0.1, 12.19.0, 12.18.0 - 12.18.4, 12.17.0, 12.16.0 - 12.16.3, 12.15.0, 12.14.0 - 12.14.1, 12.13.0 - 12.13.1, 12.12.0, 12.11.0 - 12.11.1, 12.10.0, 12.9.0 - 12.9.1, 12.8.0 - 12.8.1, 12.7.0, 12.6.0, 12.5.0, 12.4.0, 12.3.0 - 12.3.1, 12.2.0, 12.1.0, 12.0.0

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External links
http://hackerone.com/reports/1033107
http://nodejs.org/en/blog/vulnerability/november-2020-security-releases/

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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. However, proof of concept for this vulnerability is available.