What’s Vulnerable › Vulnerabilities

CVE-2017-3305

• Severity: medium (CVSS 5.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-04-24 · updated 2026-06-17
• Weakness: CWE-319

Description

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".

Affected products

• Debian Linux: 8.0
• MySQL Server: from 5.5.0 through 5.5.55; from 5.6.0 through 5.6.35

References

• http://riddle.link/
• http://www.debian.org/security/2017/dsa-3834
• http://www.openwall.com/lists/oss-security/2017/03/17/3
• http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.html
• http://www.securityfocus.com/bid/97023
• http://www.securitytracker.com/id/1038287
• https://access.redhat.com/errata/RHSA-2017:2787
• http://riddle.link/
• http://www.debian.org/security/2017/dsa-3834
• http://www.openwall.com/lists/oss-security/2017/03/17/3
• http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.html
• http://www.securityfocus.com/bid/97023

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