CVE Database›CVE-2018-12120

CVE-2018-12120

nodejs: Debugger port 5858 listens on any interface by default

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Severity

Moderate

Red Hat Product Security

7.3

CVSS 3.0

Review impact separately from score.

Published · November 27, 2018

Updated · October 9, 2026

Description

Node.js: All versions prior to Node.js 6.15.0: Debugger port 5858 listens on any interface by default: When the debugger is enabled with node --debug or node debug, it listens to port 5858 on all interfaces by default. This may allow remote computers to attach to the debug port and evaluate arbitrary JavaScript. The default interface is now localhost. It has always been possible to start the debugger on a specific interface, such as node --debug=localhost. The debugger was removed in Node.js 8 and replaced with the inspector, so no versions from 8 and later are vulnerable.

Statement

The nodejs RPMs shipped in Red Hat OpenShift Container Platform (OCP) versions 3.6 through 3.10 are vulnerable to this flaw because they contain the affected code. Later versions of OCP used nodejs RPMs delivered from Red Hat Software Collections and Red Hat Enterprise Linux channels.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

  • On any version : Ensure the firewall prevents access to port 5858 on untrusted interfaces.

  • On nodejs 6 : To enforce the debug on a specific interface: $ node --debug=localhost

CVSS / CWE

CVSS 3.0 · 7.3
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CWE-284 · Improper Access Control