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CVE-2022-39236

4.3 · MEDIUM

Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript.

Published Sep 28, 2022CWE-20EPSS 1.35%

Overview

CVE-2022-39236 is a medium-severity vulnerability. It was published on September 28, 2022 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. Some level of privileges is required for exploitation.

Technical description

Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Starting with version 17.1.0-rc.1, improperly formed beacon events can disrupt or impede the matrix-js-sdk from functioning properly, potentially impacting the consumer's ability to process data safely. Note that the matrix-js-sdk can appear to be operating normally but be excluding or corrupting runtime data presented to the consumer. This is patched in matrix-js-sdk v19.7.0. Redacting applicable events, waiting for the sync processor to store data, and restarting the client are possible workarounds. Alternatively, redacting the applicable events and clearing all storage will fix the further perceived issues. Downgrading to an unaffected version, noting that such a version may be subject to other vulnerabilities, will additionally resolve the issue.

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/matrix-org/matrix-js-sdk/commit/a587d7c36026fe1fcf93dfff63588abee359be76GitHubgithub.com/matrix-org/matrix-js-sdk/releases/tag/v19.7.0GitHubgithub.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-hvv8-5v86-r45xGitHubgithub.com/matrix-org/matrix-spec-proposals/pull/3488Refsecurity.gentoo.org/glsa/202210-35GitHubgithub.com/matrix-org/matrix-js-sdk/commit/a587d7c36026fe1fcf93dfff63588abee359be76GitHubgithub.com/matrix-org/matrix-js-sdk/releases/tag/v19.7.0GitHubgithub.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-hvv8-5v86-r45xGitHubgithub.com/matrix-org/matrix-spec-proposals/pull/3488Refsecurity.gentoo.org/glsa/202210-35

How CyberStrike helps

Frequently asked questions

What is CVE-2022-39236?

CVE-2022-39236 is a medium-severity vulnerability. It was published on September 28, 2022 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2022-39236?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-39236?

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-2022-39236?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-39236 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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