Vulnerability CVE-2021-43281


Published: 2021-11-04

Description:
MyBB before 1.8.29 allows Remote Code Injection by an admin with the "Can manage settings?" permission. 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 Change Settings pages.

Type:

CWE-94

(Improper Control of Generation of Code ('Code Injection'))

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.5/10
6.4/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
MYBB -> MYBB 

 References:
https://github.com/mybb/mybb/security/advisories/GHSA-8gxx-vmr9-h39p

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