Percona is happy to announce that the following vulnerabilities are fixed in current releases of Percona Server for MySQL and Percona XtraDB Cluster:
- CVE-2016-6663: allows a local system user with access to the affected database in the context of a low-privileged account (CREATE/INSERT/SELECT grants) to escalate their privileges and execute arbitrary code as the database system user (typically “mysql”).
- CVE-2016-6664: can let attackers who have gained access to mysql system user to further escalate their privileges to root user allowing them to fully compromise the system.
Users should upgrade to their relevant incremental release.
Percona XtraDB Cluster
Users should update as soon as is practical to ensure protection from these vulnerabilities.
Percona would like to thank Dawid Golunski (https://legalhackers.com) for disclosing this issue.