Category Archives: Security
Recently we had a report from a user who had seen a stunning 90% performance regression after upgrading his server to a Linux kernel with KPTI (kernel page-table isolation – a remedy for the Meltdown vulnerability). (more…) …
Continue reading “MyISAM and KPTI – Performance Implications From The Meltdown Fix”
MySQL 3.20 to 4.0
In the good old days, when 32MB of RAM justified the name my-huge.cnf, when nobody knew Google and Facebook didn’t even exist, security was… how do I put it… kind of cute. Computer viruses didn’t steal millions and didn’t disrupt elections — they played Yankee Doodle or told you not to play with the PC. People used telnet and ftp, although some security conscious admins already knew ssh.
Somewhere around this time, give or take a few years, MySQL was born. And it had users, who had to be kept away from seeing others’ data, but allowed to use their own. …
During the recent days there has been quite a lot of questions and discussion around a vulnerability referred to as MySQL Remote Root Code Execution / Privilege Escalation 0day with CVE code CVE-2016-6662. It’s a serious vulnerability and we encourage every MariaDB Server user to read the below update on the vulnerability from a MariaDB point of view.
The vulnerability can be exploited by both local and remote users. Both an authenticated connection to or SQL injection in an affected version of MariaDB Server can be used to exploit the vulnerability. If successful, a library file could be loaded and executed with root privileges. …
Recently a serious vulnerability called DROWN was found. The vulnerability exists in systems that support SSLv2. There is flaw in SSLv2 that could be used to decrypt information over newer SSL protocols such as TLS. More information about the DROWN vulnerability with CVE number CVE-2016-0800 can be found here:
Last December Sergei Golubchik wrote a blog post about The State of SSL in MariaDB, which explains what versions of SSL cryptography is used in which MariaDB version and what is inherited from MySQL. …
Continue reading “MariaDB itself is NOT affected by the DROWN vulnerability”