MariaDB: Ubuntu/Debian installation method allows key poisoning and code execution for network attacker

The MariaDB installation instructions for apt-based distributions Debian/Ubuntu look like this: sudo apt-get install software-properties-common sudo apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com:80 0xF1656F24C74CD1D8 sudo add-apt-repository 'deb arch=amd64...