HIGH

CVE-2022-24734

CVSS v3

7.2

HIGH

EPSS Score

82.4%

exploit probability

CISA KEV

No

known exploited

Exploitation

SSVC status

Description

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.

Technical details

Published
3/9/2022

Frequently asked questions

What is CVE-2022-24734?

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.

Is CVE-2022-24734 actively exploited?

Active exploitation of CVE-2022-24734 has not been confirmed. The EPSS score is 82.4%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-24734?

CVE-2022-24734 has a CVSS v3 base score of 7.2 (HIGH severity).

Is CVE-2022-24734 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.