CVE-2017-3305

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: C API). Supported versions that are affected are 5.5.55 and earlier and 5.6.35 and earlier. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data. CVSS 3.0 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N). NOTE: the previous information is from the April 2017 CPU. Oracle has not commented on third-party claims that this issue allows man-in-the-middle attackers to hijack the authentication of users by leveraging incorrect ordering of security parameter verification in a client, aka, "The Riddle".

• CWE-319

• http://riddle.link/Third Party Advisory
• http://www.debian.org/security/2017/dsa-3834Third Party Advisory
• http://www.openwall.com/lists/oss-security/2017/03/17/3Mailing List, Third Party Advisory
• http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.htmlPatch, Vendor Advisory
• http://www.securityfocus.com/bid/97023Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1038287Third Party Advisory, VDB Entry
• https://access.redhat.com/errata/RHSA-2017:2787Third Party Advisory
• http://riddle.link/Third Party Advisory
• http://www.debian.org/security/2017/dsa-3834Third Party Advisory
• http://www.openwall.com/lists/oss-security/2017/03/17/3Mailing List, Third Party Advisory
• http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.htmlPatch, Vendor Advisory
• http://www.securityfocus.com/bid/97023Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1038287Third Party Advisory, VDB Entry
• https://access.redhat.com/errata/RHSA-2017:2787Third Party Advisory

Published

Apr 24, 2017

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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