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CVE-2023-36461

7.5 · HIGH

Mastodon is a free, open-source social network server based on ActivityPub.

Published Jul 6, 2023CWE-770EPSS 1.31%

Overview

CVE-2023-36461 is a high-severity vulnerability. It was published on July 6, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Mastodon is a free, open-source social network server based on ActivityPub. When performing outgoing HTTP queries, Mastodon sets a timeout on individual read operations. Prior to versions 3.5.9, 4.0.5, and 4.1.3, a malicious server can indefinitely extend the duration of the response through slowloris-type attacks. This vulnerability can be used to keep all Mastodon workers busy for an extended duration of time, leading to the server becoming unresponsive. Versions 3.5.9, 4.0.5, and 4.1.3 contain a patch for this 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

Refwww.openwall.com/lists/oss-security/2023/07/06/7GitHubgithub.com/mastodon/mastodon/commit/c5929798bf7e56cc2c79b15bed0c4692ded3dcb6GitHubgithub.com/mastodon/mastodon/releases/tag/v3.5.9GitHubgithub.com/mastodon/mastodon/releases/tag/v4.0.5GitHubgithub.com/mastodon/mastodon/releases/tag/v4.1.3GitHubgithub.com/mastodon/mastodon/security/advisories/GHSA-9pxv-6qvf-pjwcRefwww.openwall.com/lists/oss-security/2023/07/06/7GitHubgithub.com/mastodon/mastodon/commit/c5929798bf7e56cc2c79b15bed0c4692ded3dcb6GitHubgithub.com/mastodon/mastodon/releases/tag/v3.5.9GitHubgithub.com/mastodon/mastodon/releases/tag/v4.0.5

How CyberStrike helps

Frequently asked questions

What is CVE-2023-36461?

CVE-2023-36461 is a high-severity vulnerability. It was published on July 6, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-36461?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-36461?

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-2023-36461?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-36461 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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