CVE-2016-6663
Description
Race condition in Oracle MySQL before 5.5.52, 5.6.x before 5.6.33, 5.7.x before 5.7.15, and 8.x before 8.0.1; MariaDB before 5.5.52, 10.0.x before 10.0.28, and 10.1.x before 10.1.18; 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 allows local users with certain permissions to gain privileges by leveraging use of my_copystat by REPAIR TABLE to repair a MyISAM table.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
MySQL / MariaDB / PerconaDB 5.5.x/5.6.x/5.7.x - 'mysql' System User Privilege Escalation / Race Condition
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| oracle | mysql | {"startIncluding":"5.5.0","endIncluding":"5.5.52"} | |
| percona | percona_server | {"startIncluding":"5.5","endExcluding":"5.5.51-38.2"} | 5.5.51-38.2 |
| percona | xtradb_cluster | {"startIncluding":"5.5","endExcluding":"5.5.41-37.0"} | 5.5.41-37.0 |
| mariadb | mariadb | {"startIncluding":"5.5.20","endExcluding":"5.5.52"} | 5.5.52 |
| oracle | mysql | 8.0 | |
| oracle | mysql | {"startIncluding":"5.6.0","endIncluding":"5.6.33"} | |
| oracle | mysql | {"startIncluding":"5.7.0","endIncluding":"5.7.15"} | |
| mariadb | mariadb | {"startIncluding":"10.0.0","endExcluding":"10.0.28"} | 10.0.28 |
| mariadb | mariadb | {"startIncluding":"10.1.0","endExcluding":"10.1.18"} | 10.1.18 |
References
- http://rhn.redhat.com/errata/RHSA-2016-2130.html
- http://rhn.redhat.com/errata/RHSA-2016-2131.html
- http://rhn.redhat.com/errata/RHSA-2016-2595.html
- http://rhn.redhat.com/errata/RHSA-2016-2749.html
- http://rhn.redhat.com/errata/RHSA-2016-2927.html
- http://rhn.redhat.com/errata/RHSA-2016-2928.html
- http://rhn.redhat.com/errata/RHSA-2017-0184.html
- http://seclists.org/fulldisclosure/2016/Nov/4
- http://www.openwall.com/lists/oss-security/2016/10/25/4
- http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
- http://www.securityfocus.com/bid/92911
- http://www.securityfocus.com/bid/93614
- https://dev.mysql.com/doc/relnotes/mysql/5.5/en/news-5-5-52.html
- https://dev.mysql.com/doc/relnotes/mysql/5.6/en/news-5-6-33.html
- https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-15.html
- https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-1.html
- https://github.com/MariaDB/server/commit/347eeefbfc658c8531878218487d729f4e020805
- https://github.com/mysql/mysql-server/commit/4e5473862e6852b0f3802b0cd0c6fa10b5253291
- https://legalhackers.com/advisories/MySQL-Maria-Percona-PrivEscRace-CVE-2016-6663-5616-Exploit.html
- https://mariadb.com/kb/en/mariadb/mariadb-10028-release-notes/
- https://mariadb.com/kb/en/mariadb/mariadb-10118-release-notes/
- https://mariadb.com/kb/en/mariadb/mariadb-5552-release-notes/
- https://www.exploit-db.com/exploits/40678/
- https://www.percona.com/blog/2016/11/02/percona-responds-to-cve-2016-6663-and-cve-2016-6664/
- https://www.suse.com/security/cve/CVE-2016-6663.html
CWEs
CWE-362
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.