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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2022-24734 Detail

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.


Severity

 


CVSS 3.x Severity and Metrics:

NIST CVSS score matches with CNA score
CNA:  GitHub, Inc.
Base Score:  7.2 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: The NVD and the CNA have provided the same score. When this occurs only the CNA information is displayed, but the Acceptance Level icon for the CNA is given a checkmark to signify NVD concurrence.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://packetstormsecurity.com/files/167082/MyBB-1.8.29-Remote-Code-Execution.html Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/167333/MyBB-Admin-Control-Remote-Code-Execution.html Exploit  Third Party Advisory 
https://github.com/mybb/mybb/commit/92012b9831b330714b9f9b4646a98784113489c1 Patch  Third Party Advisory 
https://github.com/mybb/mybb/security/advisories/GHSA-876v-gwgh-w57f Patch  Third Party Advisory 
https://mybb.com/versions/1.8.30/ Release Notes  Vendor Advisory 
https://www.zerodayinitiative.com/advisories/ZDI-22-503/ Third Party Advisory  VDB Entry  Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-94 Improper Control of Generation of Code ('Code Injection') cwe source acceptance level NIST   Provider acceptance level GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-24734
NVD Published Date:
03/09/2022
NVD Last Modified:
09/30/2022
Source:
GitHub, Inc.