The installation scripts in the Gentoo dev-db/mysql, dev-db/mariadb, dev-db/percona-server, dev-db/mysql-cluster, and dev-db/mariadb-galera packages before 2017-09-29 have chown calls for user-writable directory trees, which allows local users to gain privileges by leveraging access to the mysql account for creation of a link.
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.
Link | Tags |
---|---|
https://bugs.gentoo.org/630822 | third party advisory issue tracking |
https://security.gentoo.org/glsa/201711-04 | vendor advisory third party advisory issue tracking |