Vulnerability identifier: #VU26292

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5739

CWE-ID: CWE-399

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 perform a denial of service (DoS) attack.

The vulnerability exists due to a very long keep-alive window of 2 minutes that Node.js uses by default for every HTTP and HTTPS connection. A remote attacker can create a bige amount of keep-alive connections and consume all available resources on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Node.js: 6.16.0, 6.15.1, 6.12.0 - 6.12.3, 6.11.0 - 6.11.5, 6.10.0 - 6.10.3, 5.11.0, 5.10.0 - 5.10.1, 5.9.0 - 5.9.1, 5.8.0, 5.7.0 - 5.7.1, 5.6.0, 5.5.0, 5.4.0 - 5.4.1, 5.3.0, 5.2.0, 5.1.0 - 5.1.1, 5.0.0, 4.9.1, 4.7.0 - 4.7.3, 4.6.0 - 4.6.2, 4.4.0 - 4.4.4, 4.3.0 - 4.3.2, 4.2.0 - 4.2.6, 4.1.0 - 4.1.2, 4.0.0

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External links
http://nodejs.org/en/blog/vulnerability/february-2019-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.