Vulnerability identifier: #VU16168

Vulnerability risk: Low

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-2018-12121

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Node.js
Server applications / Web servers

Vendor: Node.js Foundation

Description
The disclosed vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to heap-based buffer overflow. A remote attacker can send many requests with the maximum size HTTP header of nearly 80kb/connection in combination with carefully handled completion of those headers, trigger memory corruption and cause the Node.js HTTP server to abort.

Mitigation
The vulnerability has been fixed in the versions 6.15.0, 8.14.0, 10.14.0, 11.3.0.

Vulnerable software versions

Node.js: 6.14.0 - 6.14.4, 6.13.0 - 6.13.1, 6.9.0 - 6.9.5, 6.8.0 - 6.8.1, 6.7.0, 6.6.0, 6.5.0, 6.4.0, 6.3.0 - 6.3.1, 6.0.0, 6.1.0, 6.2.0 - 6.2.2, 8.11.0 - 8.11.4, 8.9.0 - 8.9.4, 8.8.0 - 8.8.1, 8.7.0, 8.6.0, 8.5.0, 8.4.0, 8.3.0, 8.2.0 - 8.2.1, 8.1.0 - 8.1.4, 8.0.0, 8.10.0, 10.8.0, 10.7.0, 10.6.0, 10.9, 10.4.0 - 10.4.1, 10.3.0, 10.2.0 - 10.2.1, 10.1.0, 10.0.0, 11.2.0, 11.1.0, 11.0.0, 10.13.0, 10.12.0, 10.11.0, 10.10.0, 8.13.0, 8.12.0

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External links
http://nodejs.org/en/blog/vulnerability/november-2018-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.