Permissions, Privileges, and Access Controls in Minimal Coming Soon & Maintenance Mode - CVE-2020-6166
Published: January 9, 2020
Vulnerability identifier: #VU24151
CSH Severity: Medium
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-6166
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to improper permission check in the "is_admin()" function. A remote user can export the plugin settings as a .txt file or modify the theme of the maintenance page on a vulnerable site.
PoC:
/wp-admin/admin.php?action=csmm_export_settings&redirect=/wp-admin/
/wp-admin/admin.php?action=csmm_activate_theme&theme=minimal&redirect=/wp-admin/
Affected software
Minimal Coming Soon & Maintenance Mode
How to mitigate CVE-2020-6166
Install updates from vendor's website.
Minimal Coming Soon & Maintenance Mode - update to 2.17