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 4.1.x ranging from 4.1 and up to (and including) 4.1.22 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 Improper Restriction of XML External Entity Reference Vulnerability (CVE-2021-29447)
XWiki Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2023-46242)
Joomla Session Fixation Vulnerability (CVE-2010-1434)
Chamilo Improper Control of Generation of Code ('Code Injection') Vulnerability (CVE-2022-27427)