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CVE-2022-39202

4.3 · MEDIUM

matrix-appservice-irc is an open source Node.js IRC bridge for Matrix.

Published Sep 13, 2022CWE-269EPSS 0.88%

Overview

CVE-2022-39202 is a medium-severity vulnerability. It was published on September 13, 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-appservice-irc is an open source Node.js IRC bridge for Matrix. The Internet Relay Chat (IRC) protocol allows you to specify multiple modes in a single mode command. Due to a bug in the underlying matrix-org/node-irc library, affected versions of matrix-appservice-irc perform parsing of such modes incorrectly, potentially resulting in the wrong user being given permissions. Mode commands can only be executed by privileged users, so this can only be abused if an operator is tricked into running the command on behalf of an attacker. The vulnerability has been patched in matrix-appservice-irc 0.35.0. As a workaround users should refrain from entering mode commands suggested by untrusted users. Avoid using multiple modes in a single command.

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-appservice-irc/commit/5f87dbed87b4b6dc49b7965ff152ee8535719e67GitHubgithub.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-cq7q-5c67-w39wRefmatrix.org/blog/2022/09/13/security-release-of-matrix-appservice-irc-0-35-0-high-severity/GitHubgithub.com/matrix-org/matrix-appservice-irc/commit/5f87dbed87b4b6dc49b7965ff152ee8535719e67GitHubgithub.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-cq7q-5c67-w39wRefmatrix.org/blog/2022/09/13/security-release-of-matrix-appservice-irc-0-35-0-high-severity/

How CyberStrike helps

Frequently asked questions

What is CVE-2022-39202?

CVE-2022-39202 is a medium-severity vulnerability. It was published on September 13, 2022 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2022-39202?

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-2022-39202?

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-2022-39202?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-39202 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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