Permissions, Privileges, and Access Controls in RegistrationMagic - Custom Registration Forms and User Login - CVE-2020-9456
Published: March 6, 2020
Vulnerability identifier: #VU25801
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Amber
CVE-ID: CVE-2020-9456
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Registrationmagic
Affected software:
RegistrationMagic - Custom Registration Forms and User Login
RegistrationMagic - Custom Registration Forms and User Login
Detailed vulnerability description
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to insufficient capability checks or nonces for functions in the plugin used for administrative purposes. A remote user can send a specially crafted request with the "rm_slug" $_POST parameter set to "rm_user_edit" and the "user_id" parameter set to the user’s ID (which can typically be obtained from the user’s profile page) and change the user’s role to administrator.
How to mitigate CVE-2020-9456
Install updates from vendor's website.