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CVE-2018-12123

4.3 · MEDIUM

Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Hostname spoofing in URL parser for javascript protocol: If a Node.js application is using url.parse() to determine the UR…

Published Nov 28, 2018CWE-115EPSS 4.05%

Overview

CVE-2018-12123 is a medium-severity vulnerability. It was published on November 28, 2018 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Hostname spoofing in URL parser for javascript protocol: If a Node.js application is using url.parse() to determine the URL hostname, that hostname can be spoofed by using a mixed case "javascript:" (e.g. "javAscript:") protocol (other protocols are not affected). If security decisions are made about the URL based on the hostname, they may be incorrect.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refaccess.redhat.com/errata/RHSA-2019:1821Refnodejs.org/en/blog/vulnerability/november-2018-security-releases/Refsecurity.gentoo.org/glsa/202003-48Refaccess.redhat.com/errata/RHSA-2019:1821Refnodejs.org/en/blog/vulnerability/november-2018-security-releases/Refsecurity.gentoo.org/glsa/202003-48Refsecurity.netapp.com/advisory/ntap-20241213-0008/

How CyberStrike helps

Frequently asked questions

What is CVE-2018-12123?

CVE-2018-12123 is a medium-severity vulnerability. It was published on November 28, 2018 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2018-12123?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-12123?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-12123?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-12123 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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