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    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.

    Published:Apr 29, 2015
    Last Modified:Apr 12, 2025
    EPS:May 16, 2016
    EPSS Score:0.29495
    CVSS Score:5.9

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Mariadb
    Product
    Mariadb
    Vendor
    Oracle
    Product
    Mysql
    Vendor
    Oracle
    Product
    Mysql Connector\/c
    Vendor
    Php
    Product
    Php
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Tus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation
    Vendor
    Redhat
    Product
    Rhel Software Collections

    Exploits

    http://mysqlblog.fivefarmers.com/2014/04/02/redefining-ssl-option/http://mysqlblog.fivefarmers.com/2014/04/02/redefining-ssl-option/https://github.com/duo-labs/mysslstrip

    Common Weakness Enumeration

    CWE-295 Improper Certificate Validation

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    References

    http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161436.html
    http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161625.html
    http://mysqlblog.fivefarmers.com/2014/04/02/redefining-ssl-option/
    http://mysqlblog.fivefarmers.com/2015/04/29/ssltls-in-5-6-and-5-5-ocert-advisory/
    http://packetstormsecurity.com/files/131688/MySQL-SSL-TLS-Downgrade.html
    http://rhn.redhat.com/errata/RHSA-2015-1646.html
    http://rhn.redhat.com/errata/RHSA-2015-1647.html
    http://rhn.redhat.com/errata/RHSA-2015-1665.html
    http://www.debian.org/security/2015/dsa-3311
    http://www.ocert.org/advisories/ocert-2015-003.html
    http://www.securityfocus.com/archive/1/535397/100/1100/threaded
    http://www.securityfocus.com/bid/74398
    http://www.securitytracker.com/id/1032216
    https://access.redhat.com/security/cve/cve-2015-3152
    https://github.com/mysql/mysql-server/commit/3bd5589e1a5a93f9c224badf983cd65c45215390
    https://jira.mariadb.org/browse/MDEV-7937
    https://www.duosecurity.com/blog/backronym-mysql-vulnerability
    http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161436.html
    http://lists.fedoraproject.org/pipermail/package-announce/2015-July/161625.html
    http://mysqlblog.fivefarmers.com/2014/04/02/redefining-ssl-option/
    http://mysqlblog.fivefarmers.com/2015/04/29/ssltls-in-5-6-and-5-5-ocert-advisory/
    http://packetstormsecurity.com/files/131688/MySQL-SSL-TLS-Downgrade.html
    http://rhn.redhat.com/errata/RHSA-2015-1646.html
    http://rhn.redhat.com/errata/RHSA-2015-1647.html
    http://rhn.redhat.com/errata/RHSA-2015-1665.html
    http://www.debian.org/security/2015/dsa-3311
    http://www.ocert.org/advisories/ocert-2015-003.html
    http://www.securityfocus.com/archive/1/535397/100/1100/threaded
    http://www.securityfocus.com/bid/74398
    http://www.securitytracker.com/id/1032216
    https://access.redhat.com/security/cve/cve-2015-3152
    https://github.com/mysql/mysql-server/commit/3bd5589e1a5a93f9c224badf983cd65c45215390
    https://jira.mariadb.org/browse/MDEV-7937
    https://www.duosecurity.com/blog/backronym-mysql-vulnerability

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High