Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Security: Encryption ). Supported versions that are affected are 5.6.34 and earlier and 5.7.16 and earlier. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in MySQL Server, attacks may significantly impact additional products. 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
Created community-mysql tracking bugs for this issue: Affects: fedora-all [bug 1414386]
It seems this CVE is for this change mentioned in the MySQL 5.6.35 and 5.7.17 release notes: MySQL Enterprise Notes Enterprise Encryption for MySQL Enterprise Edition now enables server administrators to impose limits on maximum key length by setting environment variables. These can be used to prevent clients from using excessive CPU resources by passing very long key lengths to key-generation operations. For more information, see Enterprise Encryption Usage and Examples. (Bug #19687742) https://dev.mysql.com/doc/relnotes/mysql/5.6/en/news-5-6-35.html https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-17.html Affected code is specific to MySQL Enterprise, not available in the community version.