Vulnerability CVE-2016-6664
Published: 2016-12-13   Modified: 2016-12-14

Description:
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.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
MySQL / MariaDB / PerconaDB 5.5.x/5.6.x/5.7.x 'root' Privilege Escalation
Dawid Golunski
02.11.2016

Type:

CWE-59

 (Improper Link Resolution Before File Access ('Link Following'))

CVSS2 => (AV:L/AC:M/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.9/10
10/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Percona -> Percona server 
Percona -> Xtradb cluster 
Oracle -> Mysql 
Mariadb -> Mariadb 

 References:
http://legalhackers.com/advisories/MySQL-Maria-Percona-RootPrivEsc-CVE-2016-6664-5617-Exploit.html
http://packetstormsecurity.com/files/139491/MySQL-MariaDB-PerconaDB-Root-Privilege-Escalation.html
http://rhn.redhat.com/errata/RHSA-2016-2130.html
http://rhn.redhat.com/errata/RHSA-2016-2749.html
http://seclists.org/fulldisclosure/2016/Nov/4
http://www.debian.org/security/2017/dsa-3770
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.securityfocus.com/archive/1/539695/100/0/threaded
http://www.securityfocus.com/bid/93612
https://access.redhat.com/errata/RHSA-2017:2192
https://access.redhat.com/errata/RHSA-2018:0279
https://access.redhat.com/errata/RHSA-2018:0574
https://security.gentoo.org/glsa/201702-18
https://www.exploit-db.com/exploits/40679/
https://www.percona.com/blog/2016/11/02/percona-responds-to-cve-2016-6663-and-cve-2016-6664/
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