Vulnerability Description
The Appointments plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 2.2.1 via deserialization of untrusted input from the `wpmudev_appointments` cookie. This allows unauthenticated attackers to inject a PHP Object. Attackers were actively exploiting this vulnerability with the WP_Theme() class to create backdoors.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wpmudev | Appointments | <= 2.2.1 |
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/changeset/1733186/appointmentsPatch
- https://www.wordfence.com/blog/2017/10/3-zero-day-plugin-vulnerabilities-exploitPress/Media CoverageThird Party Advisory
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7e8f230e-3f96-4efd-806Third Party Advisory
FAQ
What is CVE-2017-20206?
CVE-2017-20206 is a vulnerability with a CVSS score of 9.8 (CRITICAL). The Appointments plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 2.2.1 via deserialization of untrusted input from the `wpmudev_appointments` cookie. This ...
How severe is CVE-2017-20206?
CVE-2017-20206 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2017-20206?
Check the references section above for vendor advisories and patch information. Affected products include: Wpmudev Appointments.