Description
WordPress is prone to a Denial of Service vulnerability which can be exploited by malicious people to cause the affected website to consume memory and CPU resources, thus denying service to legitimate users. WordPress versions 3.7.x ranging from 3.7 and up to (and including) 3.7.25 are vulnerable.
Remediation
Evaluate and apply the suggested patch
References
https://baraktawily.blogspot.ro/2018/02/how-to-dos-29-of-world-wide-websites.html
https://www.youtube.com/watch?v=nNDsGTalXS0
https://github.com/Quitten/WordPress/blob/master/wp-dos-patch.sh
https://www.exploit-db.com/exploits/43968/
https://packetstormsecurity.com/files/146249/WordPress-Core-Denial-Of-Service.html
https://www.rastating.com/protecting-wordpress-against-cve-2018-6389/
Related Vulnerabilities
WordPress Plugin WP Super Cache Cross-Site Scripting (1.4.2)
WordPress Plugin Link Library Cross-Site Scripting (5.9.12.29)
PostgreSQL Improper Authentication Vulnerability (CVE-2007-6601)
PHP Resource Management Errors Vulnerability (CVE-2010-2093)
WordPress Plugin Link Log-external link click monitor SQL Injection (2.0)