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CVE-2021-23438

5.6 · MEDIUM

This affects the package mpath before 0.8.4.

Published Sep 1, 2021CWE-843EPSS 1.72%

Overview

CVE-2021-23438 is a medium-severity vulnerability. It was published on September 1, 2021 and has a CVSS 3.1 base score of 5.6 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.6, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

This affects the package mpath before 0.8.4. A type confusion vulnerability can lead to a bypass of CVE-2018-16490. In particular, the condition ignoreProperties.indexOf(parts[i]) !== -1 returns -1 if parts[i] is ['__proto__']. This is because the method that has been called if the input is an array is Array.prototype.indexOf() and not String.prototype.indexOf(). They behave differently depending on the type of the input.

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/aheckmann/mpath/commit/89402d2880d4ea3518480a8c9847c541f2d824fcRefsnyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1579548Refsnyk.io/vuln/SNYK-JS-MPATH-1577289GitHubgithub.com/aheckmann/mpath/commit/89402d2880d4ea3518480a8c9847c541f2d824fcRefsnyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1579548Refsnyk.io/vuln/SNYK-JS-MPATH-1577289

How CyberStrike helps

Frequently asked questions

What is CVE-2021-23438?

CVE-2021-23438 is a medium-severity vulnerability. It was published on September 1, 2021 and has a CVSS 3.1 base score of 5.6 (MEDIUM).

How severe is CVE-2021-23438?

This vulnerability has a CVSS 3.1 base score of 5.6, 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-2021-23438?

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-2021-23438?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-23438 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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