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.
{
"unresolved_ranges": [
{
"vendor_product": "mysql:mysql",
"source": "CPE_RANGE",
"extracted_events": [
{
"fixed": "5.6.36"
}
],
"cpes": [
"cpe:2.3:a:mysql:mysql:*:r1:*:*:*:*:*:*"
]
}
]
}{
"source": "CPE_RANGE",
"cpe": "cpe:2.3:a:mariadb:mariadb:*:r1:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "10.0.30"
}
]
}