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CVE-2023-36460

9.9 · CRITICAL

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

Published Jul 6, 2023CWE-22EPSS 40.11%

Overview

CVE-2023-36460 is a critical-severity vulnerability. It was published on July 6, 2023 and has a CVSS 3.1 base score of 9.9 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.9, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 3.5.0 and prior to versions 3.5.9, 4.0.5, and 4.1.3, attackers using carefully crafted media files can cause Mastodon's media processing code to create arbitrary files at any location. This allows attackers to create and overwrite any file Mastodon has access to, allowing Denial of Service and arbitrary Remote Code Execution. 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/2023/07/06/4GitHubgithub.com/mastodon/mastodon/commit/dc8f1fbd976ae544720a4e07120d9a91b2722440GitHubgithub.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-9928-3cp5-93fmRefwww.openwall.com/lists/oss-security/2023/07/06/4GitHubgithub.com/mastodon/mastodon/commit/dc8f1fbd976ae544720a4e07120d9a91b2722440GitHubgithub.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-2023-36460?

CVE-2023-36460 is a critical-severity vulnerability. It was published on July 6, 2023 and has a CVSS 3.1 base score of 9.9 (CRITICAL).

How severe is CVE-2023-36460?

This vulnerability has a CVSS 3.1 base score of 9.9, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-36460?

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-2023-36460?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-36460 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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