CVE-2018-2778: Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Optimizer). Supported versions that are affected are 5.7.21 and pri...

Description

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Optimizer). Supported versions that are affected are 5.7.21 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.0 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

Metrics

EPSS Probability

2.86%

85.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Oracle	Mysql	>= 5.7.0, <= 5.7.21
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	17.10

References

http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.htmlPatch, Vendor Advisory
http://www.securityfocus.com/bid/103785Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040698Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:3655
https://security.netapp.com/advisory/ntap-20180419-0002/Third Party Advisory
https://usn.ubuntu.com/3629-1/Third Party Advisory
https://usn.ubuntu.com/3629-3/
http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.htmlPatch, Vendor Advisory
http://www.securityfocus.com/bid/103785Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040698Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:3655
https://security.netapp.com/advisory/ntap-20180419-0002/Third Party Advisory
https://usn.ubuntu.com/3629-1/Third Party Advisory
https://usn.ubuntu.com/3629-3/

Timeline

Published: Apr 19, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-2778?

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Optimizer). Supported versions that are affected are 5.7.21 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.0 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

How severe is CVE-2018-2778?

Severity scoring for CVE-2018-2778 is pending analysis. The EPSS model estimates a 2.86% probability of exploitation in the next 30 days.

How do I fix CVE-2018-2778?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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