MyBB 1.8.32 contains a chained vulnerability that allows authenticated administrators to bypass avatar upload restrictions and execute arbitrary code. Attackers can modify upload path settings, upload a malicious PHP-embedded image file, and execute commands through the language configuration editing interface.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Mybb Mybb
cpe:2.3:a:mybb:mybb:1.8.32:*:*:*:*:*:*:*
|
— | — |
References 5
https://fdlucifer.github.io/2023/01/17/mybb1-8-32-LFI-RCE/
disclosure@vulncheck.com
https://mybb.com/
disclosure@vulncheck.com
https://www.exploit-db.com/exploits/51213
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/mybb-authenticated-remote-code-execution-v…
disclosure@vulncheck.com
https://www.cve.org/CVERecord?id=CVE-2022-45867
af854a3a-2127-422b-91ae-364da2661108