ASA-2019-00121 – Node.js: Denial of Service with keep-alive HTTP connections

Posted on by Allele Security Intelligence in Alerts

Allele Security Alert

ASA-2019-00121

Identifier(s)

ASA-2019-00121, CVE-2019-5739

Title

Denial of Service with keep-alive HTTP connections

Vendor(s)

The Node.js Project

Product(s)

Node.js

Affected version(s)

All versions of Node.js 6 (LTS “Boron”)

Fixed version(s)

Node.js 6.17.0 (LTS “Boron”)

Proof of concept

Unknown

Description

Keep-alive HTTP and HTTPS connections can remain open and inactive for up to 2 minutes in Node.js 6.16.0 and earlier. Node.js 8.0.0 introduced a dedicated server.keepAliveTimeout which defaults to 5 seconds. The behavior in Node.js 6.16.0 and earlier is a potential Denial of Service (DoS) attack vector. Node.js 6.17.0 introduces server.keepAliveTimeout and the 5-second default.

Technical details

Unknown

Credits

Timur Shemsedinov and Matteo Collina

Reference(s)

February 2019 Security Releases
https://nodejs.org/en/blog/vulnerability/february-2019-security-releases/

http: destroy sockets after keepAliveTimeout
https://github.com/nodejs/node/commit/f23b3b6bad

CVE-2019-5739
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5739

CVE-2019-5739
https://nvd.nist.gov/vuln/detail/CVE-2019-5739

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Last modified: March 6, 2019

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