CVE-2017-3635 Denial of service in MySQL Server

What is CVE-2017-3635?

CVE-2017-3635 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 8 Aug 2017. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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).

Which versions are affected by CVE-2017-3635?

It affects 3 products.

Products include Debian Debian Linux, Oracle Mysql, Oracle Mysql Connector\/C.

How do I fix CVE-2017-3635?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2017-3635 being exploited?

There is no known exploitation of CVE-2017-3635 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-ww8f-x2mm-9gfw, UBUNTU-CVE-2017-3635.