CVE-2022-24734: MyBB Admin Control Panel Code Injection Remote Code Execution Vulnerability
First published: Wed Mar 09 2022(Updated: )
MyBB is a free and open source forum software. In affected versions the Admin CP's Settings management module does not validate setting types correctly on insertion and update, making it possible to add settings of supported type `php` with PHP code, executed on on _Change Settings_ pages. This results in a Remote Code Execution (RCE) vulnerability. The vulnerable module requires Admin CP access with the `Can manage settings?` permission. MyBB's Settings module, which allows administrators to add, edit, and delete non-default settings, stores setting data in an options code string ($options_code; mybb_settings.optionscode database column) that identifies the setting type and its options, separated by a new line character (\n). In MyBB 1.2.0, support for setting type php was added, for which the remaining part of the options code is PHP code executed on Change Settings pages (reserved for plugins and internal use). MyBB 1.8.30 resolves this issue. There are no known workarounds.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mybb Mybb | >=1.2.0<1.8.30 | |
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Reference Links
- http://packetstormsecurity.com/files/167082/MyBB-1.8.29-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/167333/MyBB-Admin-Control-Remote-Code-Execution.html
- https://github.com/mybb/mybb/commit/92012b9831b330714b9f9b4646a98784113489c1
- https://github.com/mybb/mybb/security/advisories/GHSA-876v-gwgh-w57f
- https://mybb.com/versions/1.8.30/
- https://www.zerodayinitiative.com/advisories/ZDI-22-503/
Frequently Asked Questions
What is CVE-2022-24734?
CVE-2022-24734 is a vulnerability in MyBB that allows for code injection and remote code execution in the Admin Control Panel's Settings management module.
How does CVE-2022-24734 affect MyBB?
CVE-2022-24734 affects versions of MyBB from 1.2.0 to 1.8.30, allowing attackers to inject and execute PHP code on the Admin CP's Settings pages.
What is the severity of CVE-2022-24734?
The severity of CVE-2022-24734 is high, with a CVSS score of 7.2.
How can I fix CVE-2022-24734?
To fix CVE-2022-24734, it is recommended to update MyBB to a version that has a fix for the vulnerability, such as version 1.8.31 or later.
Where can I find more information about CVE-2022-24734?
You can find more information about CVE-2022-24734 on the following websites: - [Packet Storm Security](http://packetstormsecurity.com/files/167082/MyBB-1.8.29-Remote-Code-Execution.html) - [GitHub - MyBB Commit](https://github.com/mybb/mybb/commit/92012b9831b330714b9f9b4646a98784113489c1)
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