Stack-based Buffer Overflow

Summary

MariaDB versions 10.2.x prior to 10.2.42, 10.3.x prior to 10.3.33, 10.4.x prior to 10.4.23, 10.5.x prior to 10.5.14, 10.6.x prior to 10.6.6, 10.7.x prior to 10.7.2, and 10.8.0 CONNECT Storage Engine Stack-based Buffer Overflow Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of MariaDB. Authentication is required to exploit this vulnerability. A specific flaw exists within the processing of SQL queries. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the service account. This issue was assigned as ZDI-CAN-16191.