CVE-2020-36840: timetable and event schedule vulnerability

What is known

The Timetable and Event Schedule by MotoPress plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the wp_ajax_route_url() function called via a nopriv AJAX action in versions up to, and including, 2.3.8. This makes it possible for unauthenticated attackers to call that function and perform a wide variety of actions such as including random template, injecting malicious web scripts, and more.

Business impact

Successful exploitation of CVE-2020-36840, a high vulnerability (CVSS 7.3) affecting timetable and event schedule, may affect the confidentiality, integrity or availability of the vulnerable environment. The exact impact depends on the installed version, exposed interfaces and deployment configuration.

Recommended administrator action

Confirm whether timetable and event schedule is present and compare installed versions with the vendor advisory and NVD record. Apply the vendor patch or documented mitigation; until remediation is complete, reduce exposure of affected interfaces, review relevant logs and monitor for indicators of exploitation. DataHouse can support version verification, managed patching, network exposure reduction, log review and backup validation for dedicated, cloud and colocated environments.

Sources

• NVD
• Reference
• Reference