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CVE-2024-23336

5.0 · MEDIUM

MyBB is a free and open source forum software.

Published May 1, 2024CWE-184EPSS 0.46%

Overview

CVE-2024-23336 is a medium-severity vulnerability. It was published on May 1, 2024 and has a CVSS 3.1 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

MyBB is a free and open source forum software. The default list of disallowed remote hosts does not contain the `127.0.0.0/8` block, which may result in a Server-Side Request Forgery (SSRF) vulnerability. The Configuration File's _Disallowed Remote Addresses_ list (`$config['disallowed_remote_addresses']`) contains the address `127.0.0.1`, but does not include the complete block `127.0.0.0/8`. MyBB 1.8.38 resolves this issue in default installations. Administrators of installed boards should update the existing configuration (`inc/config.php`) to include all addresses blocked by default. Additionally, users are advised to verify that it includes any other IPv4 addresses resolving to the server and other internal resources. Users unable to upgrade may manually add 127.0.0.0/8' to their disallowed address list.

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

Refdocs.mybb.com/1.8/administration/configuration-fileGitHubgithub.com/mybb/mybb/commit/d6a96019025de9149014e06b1df252e6122e5630GitHubgithub.com/mybb/mybb/security/advisories/GHSA-qfrj-65mv-h75hRefmybb.com/versions/1.8.38Refdocs.mybb.com/1.8/administration/configuration-fileGitHubgithub.com/mybb/mybb/commit/d6a96019025de9149014e06b1df252e6122e5630GitHubgithub.com/mybb/mybb/security/advisories/GHSA-qfrj-65mv-h75hRefmybb.com/versions/1.8.38

How CyberStrike helps

Frequently asked questions

What is CVE-2024-23336?

CVE-2024-23336 is a medium-severity vulnerability. It was published on May 1, 2024 and has a CVSS 3.1 base score of 5.0 (MEDIUM).

How severe is CVE-2024-23336?

This vulnerability has a CVSS 3.1 base score of 5.0, 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-2024-23336?

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-2024-23336?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-23336 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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