CVE-2015-3152

Oracle MySQL before 5.7.3, Oracle MySQL Connector/C (aka libmysqlclient) before 6.1.3, and MariaDB before 5.5.44 use the --ssl option to mean that SSL is optional, which allows man-in-the-middle attackers to spoof servers via a cleartext-downgrade attack, aka a "BACKRONYM" attack.

• CWE-295

• http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161436.htmlMailing List, Third Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161625.htmlMailing List, Third Party Advisory
• http://mysqlblog.fivefarmers.com/2014/04/02/redefining-ssl-option/Exploit, Third Party Advisory
• http://mysqlblog.fivefarmers.com/2015/04/29/ssltls-in-5-6-and-5-5-ocert-advisory/Third Party Advisory
• http://packetstormsecurity.com/files/131688/MySQL-SSL-TLS-Downgrade.htmlThird Party Advisory, VDB Entry
• http://rhn.redhat.com/errata/RHSA-2015-1646.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2015-1647.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2015-1665.htmlThird Party Advisory
• http://www.debian.org/security/2015/dsa-3311Third Party Advisory
• http://www.ocert.org/advisories/ocert-2015-003.htmlVendor Advisory
• http://www.securityfocus.com/archive/1/535397/100/1100/threadedThird Party Advisory, VDB Entry
• http://www.securityfocus.com/bid/74398Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1032216Third Party Advisory, VDB Entry
• https://access.redhat.com/security/cve/cve-2015-3152Third Party Advisory
• https://github.com/mysql/mysql-server/commit/3bd5589e1a5a93f9c224badf983cd65c45215390Patch, Third Party Advisory
• https://jira.mariadb.org/browse/MDEV-7937Issue Tracking, Vendor Advisory
• https://www.duosecurity.com/blog/backronym-mysql-vulnerabilityThird Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161436.htmlMailing List, Third Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161625.htmlMailing List, Third Party Advisory
• http://mysqlblog.fivefarmers.com/2014/04/02/redefining-ssl-option/Exploit, Third Party Advisory
• http://mysqlblog.fivefarmers.com/2015/04/29/ssltls-in-5-6-and-5-5-ocert-advisory/Third Party Advisory
• http://packetstormsecurity.com/files/131688/MySQL-SSL-TLS-Downgrade.htmlThird Party Advisory, VDB Entry
• http://rhn.redhat.com/errata/RHSA-2015-1646.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2015-1647.htmlThird Party Advisory
• http://rhn.redhat.com/errata/RHSA-2015-1665.htmlThird Party Advisory
• http://www.debian.org/security/2015/dsa-3311Third Party Advisory
• http://www.ocert.org/advisories/ocert-2015-003.htmlVendor Advisory
• http://www.securityfocus.com/archive/1/535397/100/1100/threadedThird Party Advisory, VDB Entry
• http://www.securityfocus.com/bid/74398Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1032216Third Party Advisory, VDB Entry
• https://access.redhat.com/security/cve/cve-2015-3152Third Party Advisory
• https://github.com/mysql/mysql-server/commit/3bd5589e1a5a93f9c224badf983cd65c45215390Patch, Third Party Advisory
• https://jira.mariadb.org/browse/MDEV-7937Issue Tracking, Vendor Advisory
• https://www.duosecurity.com/blog/backronym-mysql-vulnerabilityThird Party Advisory

Published

May 16, 2016

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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