mysqld_safe in Oracle MySQL through 5.5.51, 5.6.x through 5.6.32, and 5.7.x through 5.7.14; MariaDB; Percona Server before 5.5.51-38.2, 5.6.x before 5.6.32-78-1, and 5.7.x before 5.7.14-8; and Percona XtraDB Cluster before 5.5.41-37.0, 5.6.x before 5.6.32-25.17, and 5.7.x before 5.7.14-26.17, when using file-based logging, allows local users with access to the mysql account to gain root privileges via a symlink attack on error logs and possibly other files.
http://seclists.org/fulldisclosure/2016/Nov/4
http://packetstormsecurity.com/files/139491/MySQL-MariaDB-PerconaDB-Root-Privilege-Escalation.html
https://www.percona.com/blog/2016/11/02/percona-responds-to-cve-2016-6663-and-cve-2016-6664/
http://legalhackers.com/advisories/MySQL-Maria-Percona-RootPrivEsc-CVE-2016-6664-5617-Exploit.html
https://www.exploit-db.com/exploits/40679/
http://www.securityfocus.com/bid/93612
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
https://security.gentoo.org/glsa/201702-18
http://www.debian.org/security/2017/dsa-3770
https://access.redhat.com/errata/RHSA-2017:2192
http://rhn.redhat.com/errata/RHSA-2016-2749.html
http://rhn.redhat.com/errata/RHSA-2016-2130.html
https://access.redhat.com/errata/RHSA-2018:0279
https://access.redhat.com/errata/RHSA-2018:0574
http://www.securityfocus.com/archive/1/539695/100/0/threaded
Source: MITRE
Published: 2016-12-13
Updated: 2023-01-24
Type: CWE-59
Base Score: 6.9
Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 3.4
Severity: MEDIUM
Base Score: 7
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1
Severity: HIGH