#VU47217 Resource exhaustion in Node.js - CVE-2020-8251

Vulnerability identifier: #VU47217

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-8251

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Node.js
Server applications / Web servers

Vendor: Node.js Foundation

Description

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

Node.js < 14.11.0 is vulnerable to HTTP denial of service (DoS) attacks based on delayed requests submission which can make the server unable to accept new connections.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Node.js: 14.0.0, 14.1.0 - 14.10.1, 14.2.0, 14.3.0, 14.4.0, 14.5.0, 14.6.0, 14.7.0, 14.8.0, 14.9.0

---

External links
https://hackerone.com/reports/868834
https://nodejs.org/en/blog/vulnerability/september-2020-security-releases/

---

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.