CVE-2017-3256: Input Validation
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Replication ). Supported versions that are affected are 5.7.16 and earlier. Easily exploitable vulnerability allows low 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.
External References:
http://www.oracle.com/technetwork/security-advisory/cpujan2017-2881727.html#AppendixMSQL
Other sources
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Replication). Supported versions that are affected are 5.7.16 and earlier. Easily exploitable vulnerability allows low 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 v3.0 Base Score 6.5 (Availability impacts).
— MITRE
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/mysqlto a version that resolves this vulnerability.Fixed in 5.7.17 - Upgrade
Upgrade
Oracle MySQL Server (Server: Replication)to a version that resolves this vulnerability.Fixed in 5.7.16
Event History
Frequently Asked Questions
What is the severity of CVE-2017-3256?
CVE-2017-3256 is considered to be an easily exploitable vulnerability that allows unauthorized network access to the MySQL Server.
How do I fix CVE-2017-3256?
To fix CVE-2017-3256, upgrade MySQL Server to version 5.7.17 or later.
What versions of MySQL are affected by CVE-2017-3256?
CVE-2017-3256 affects all MySQL Server versions up to and including 5.7.16.
What type of attacker can exploit CVE-2017-3256?
CVE-2017-3256 can be exploited by a low privileged attacker with network access.
What components of MySQL does CVE-2017-3256 impact?
CVE-2017-3256 impacts the MySQL Server component specifically within the replication subcomponent.