CVE-2017-3599: Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Pluggable Auth). Supported versions that are affected are 5.6.35 an...

Description

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Pluggable Auth). Supported versions that are affected are 5.6.35 and earlier and 5.7.17 and earlier. Easily "exploitable" vulnerability allows unauthenticated 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 7.5 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). NOTE: the previous information is from the April 2017 CPU. Oracle has not commented on third-party claims that this issue is an integer overflow in sql/auth/sql_authentication.cc which allows remote attackers to cause a denial of service via a crafted authentication packet.

Metrics

EPSS Probability

89.92%

99.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-190

Affected Software

Vendor	Product	Versions
Oracle	Mysql	>= 5.6.0, <= 5.6.35
Oracle	Mysql	>= 5.7.0, <= 5.7.17

References

http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.htmlPatch, Vendor Advisory
http://www.securityfocus.com/bid/97754Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038287Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:2787Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2886Third Party Advisory
https://www.exploit-db.com/exploits/41954/Third Party Advisory, VDB Entry
https://www.secforce.com/blog/2017/04/cve-2017-3599-pre-auth-mysql-remote-dos/Exploit, Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuapr2017-3236618.htmlPatch, Vendor Advisory
http://www.securityfocus.com/bid/97754Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038287Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:2787Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2886Third Party Advisory
https://www.exploit-db.com/exploits/41954/Third Party Advisory, VDB Entry
https://www.secforce.com/blog/2017/04/cve-2017-3599-pre-auth-mysql-remote-dos/Exploit, Third Party Advisory

Timeline

Published: Apr 24, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-3599?

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Pluggable Auth). Supported versions that are affected are 5.6.35 and earlier and 5.7.17 and earlier. Easily "exploitable" vulnerability allows unauthenticated 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 7.5 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). NOTE: the previous information is from the April 2017 CPU. Oracle has not commented on third-party claims that this issue is an integer overflow in sql/auth/sql_authentication.cc which allows remote attackers to cause a denial of service via a crafted authentication packet.

How severe is CVE-2017-3599?

Severity scoring for CVE-2017-3599 is pending analysis. The EPSS model estimates a 89.92% probability of exploitation in the next 30 days.

How do I fix CVE-2017-3599?

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.