Description
Drupal Core is prone to an arbitrary file overwrite vulnerability. This can be coupled with other existing vulnerabilities to affect the vulnerable application in various ways. Drupal Core versions 8.9.x ranging from 8.9.0 and up to and including 8.9.12 are vulnerable.
Remediation
Update to Drupal Core version 8.9.13 or latest
References
Related Vulnerabilities
MySQL CVE-2015-4862 Vulnerability (CVE-2015-4862)
WordPress Permissions, Privileges, and Access Controls Vulnerability (CVE-2007-1893)
Jetty Improper Access Control Vulnerability (CVE-2016-4800)
WebLogic CVE-2020-2934 Vulnerability (CVE-2020-2934)
Jenkins Improper Authentication Vulnerability (CVE-2014-2066)