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 4.2.x Multiple Vulnerabilities (4.2 - 4.2.34)
WordPress Incorrect Authorization Vulnerability (CVE-2018-20147)
SharePoint CVE-2017-8509 Vulnerability (CVE-2017-8509)
WordPress Plugin Awesome Support-WordPress HelpDesk & Support Cross-Site Scripting (6.0.6)
Apache HTTP Server Improper Locking Vulnerability (CVE-2002-1850)