Vulnerability in Mariadb
CVE-2016-6663
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.043 (90.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.043 · newest: 0.043 · change: 0.000
Affected products
- Mariadb
- Oracle MySQL — versions 8.0
- Percona Server
- Percona Xtradb Cluster
Weakness classification (CWE)
Public proof-of-concept exploits
References
- rhn.redhat.com/errata/RHSA-2016-2749.html (vendor-advisory, Third Party Advisory)
- dev.mysql.com/doc/relnotes/mysql/5.5/en/news-5-5-52.html (Issue Tracking, Vendor Advisory)
- rhn.redhat.com/errata/RHSA-2017-0184.html (vendor-advisory, Third Party Advisory)
- seclists.org/fulldisclosure/2016/Nov/4 (mailing-list, Mailing List, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-2131.html (vendor-advisory, Third Party Advisory)
- github.com/mysql/mysql-server/commit/4e5473862e6852b0f3802b0cd0c6fa10b5253291 (Patch, Third Party Advisory, Issue Tracking)
- mariadb.com/kb/en/mariadb/mariadb-5552-release-notes/ (Release Notes, Vendor Advisory)
- www.percona.com/blog/2016/11/02/percona-responds-to-cve-2016-6663-and-cve-2016-… (Vendor Advisory)
- www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html (Patch, Vendor Advisory)
- www.exploit-db.com/exploits/40678/ (Exploit, VDB Entry, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2016-6663?
- CVE-2016-6663 is a high-severity vulnerability in Mariadb, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.0/10. Published 2016-12-13.
- How severe is CVE-2016-6663?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2016-6663 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.