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CVE-2018-6342

9.8 · CRITICAL

react-dev-utils on Windows allows developers to run a local webserver for accepting various commands, including a command to launch an editor.

Published Dec 31, 2018CWE-78EPSS 2.84%

Overview

CVE-2018-6342 is a critical-severity vulnerability. It was published on December 31, 2018 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

react-dev-utils on Windows allows developers to run a local webserver for accepting various commands, including a command to launch an editor. The input to that command was not properly sanitized, allowing an attacker who can make a network request to the server (either via CSRF or by direct request) to execute arbitrary commands on the targeted system. This issue affects multiple branches: 1.x.x prior to 1.0.4, 2.x.x prior to 2.0.2, 3.x.x prior to 3.1.2, 4.x.x prior to 4.2.2, and 5.x.x prior to 5.0.2.

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

GitHubgithub.com/facebook/create-react-app/pull/4866GitHubgithub.com/facebook/create-react-app/releases/tag/v1.1.5GitHubgithub.com/facebook/create-react-app/pull/4866GitHubgithub.com/facebook/create-react-app/releases/tag/v1.1.5

How CyberStrike helps

Frequently asked questions

What is CVE-2018-6342?

CVE-2018-6342 is a critical-severity vulnerability. It was published on December 31, 2018 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2018-6342?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-6342?

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-2018-6342?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-6342 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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