CVE-2024-23336
May 01, 2024
MyBB is a free and open source forum software. The default list of disallowed remote hosts does not contain the "127.0.0.0/8" block, which may result in a Server-Side Request Forgery (SSRF) vulnerability. The Configuration File's Disallowed Remote Addresses list ("$config['disallowed_remote_addresses']") contains the address "127.0.0.1", but does not include the complete block "127.0.0.0/8". MyBB 1.8.38 resolves this issue in default installations. Administrators of installed boards should update the existing configuration ("inc/config.php") to include all addresses blocked by default. Additionally, users are advised to verify that it includes any other IPv4 addresses resolving to the server and other internal resources. Users unable to upgrade may manually add 127.0.0.0/8' to their disallowed address list.
Additional Notes
The description of this vulnerability differs from MITRE.
Related Resources (4)
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Contact UsCVSS v4
Base Score:
2.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Weakness Type (CWE)
EPSS
Base Score:
0.11
