CVE-2017-3635: Vulnerability in the MySQL Connectors component of Oracle MySQL (subcomponent: Connector/C). Supported versions that are affected are 6.1.10 and earli...

Description

Vulnerability in the MySQL Connectors component of Oracle MySQL (subcomponent: Connector/C). Supported versions that are affected are 6.1.10 and earlier. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Connectors. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Connectors. Note: The documentation has also been updated for the correct way to use mysql_stmt_close(). Please see: https://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-execute.html, https://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-fetch.html, https://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-close.html, https://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-error.html, https://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-errno.html, and https://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-sqlstate.html. CVSS 3.0 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H).

Metrics

EPSS Probability

2.03%

78.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Oracle	Mysql	>= 5.5.0, <= 5.5.56
Oracle	Mysql	>= 5.6.0, <= 5.6.36
Oracle	Mysql	>= 5.7.0, <= 5.7.18
Oracle	Mysql Connector\/C	<= 6.1.10
Debian	Debian Linux	8.0

References

http://www.debian.org/security/2017/dsa-3922Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.htmlPatch, Vendor Advisory
http://www.securityfocus.com/bid/99730Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038928Third Party Advisory, VDB Entry
http://www.debian.org/security/2017/dsa-3922Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.htmlPatch, Vendor Advisory
http://www.securityfocus.com/bid/99730Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038928Third Party Advisory, VDB Entry

Timeline

Published: Aug 8, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-3635?

Vulnerability in the MySQL Connectors component of Oracle MySQL (subcomponent: Connector/C). Supported versions that are affected are 6.1.10 and earlier. Difficult to exploit vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Connectors. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Connectors. Note: The documentation has also been updated for the correct way to use mysql_stmt_close(). Please see: https://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-execute.html, https://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-fetch.html, https://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-close.html, https://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-error.html, https://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-errno.html, and https://dev.mysql.com/doc/refman/5.7/en/mysql-stmt-sqlstate.html. CVSS 3.0 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H).

How severe is CVE-2017-3635?

Severity scoring for CVE-2017-3635 is pending analysis. The EPSS model estimates a 2.03% probability of exploitation in the next 30 days.

How do I fix CVE-2017-3635?

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.