{"id":"UBUNTU-CVE-2020-7221","details":"mysql_install_db in MariaDB 10.4.7 through 10.4.11 allows privilege escalation from the mysql user account to root because chown and chmod are performed unsafely, as demonstrated by a symlink attack on a chmod 04755 of auth_pam_tool_dir/auth_pam_tool. NOTE: this does not affect the Oracle MySQL product, which implements mysql_install_db differently.","modified":"2026-04-22T12:43:15.024686Z","published":"2020-02-04T17:15:00Z","upstream":["CVE-2020-7221"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-7221"},{"type":"REPORT","url":"https://bugzilla.suse.com/show_bug.cgi?id=1160868"},{"type":"REPORT","url":"https://github.com/MariaDB/server/commit/9d18b6246755472c8324bf3e20e234e08ac45618"},{"type":"REPORT","url":"https://seclists.org/oss-sec/2020/q1/55"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-7221"}],"affected":[{"package":{"name":"mysql-5.5","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/mysql-5.5@5.5.62-0ubuntu0.14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.5.32-0ubuntu7","5.5.34-0ubuntu1","5.5.34-0ubuntu2","5.5.35-0ubuntu1","5.5.35+dfsg-1ubuntu1","5.5.37-0ubuntu0.14.04.1","5.5.38-0ubuntu0.14.04.1","5.5.40-0ubuntu0.14.04.1","5.5.41-0ubuntu0.14.04.1","5.5.43-0ubuntu0.14.04.1","5.5.44-0ubuntu0.14.04.1","5.5.46-0ubuntu0.14.04.2","5.5.47-0ubuntu0.14.04.1","5.5.49-0ubuntu0.14.04.1","5.5.50-0ubuntu0.14.04.1","5.5.52-0ubuntu0.14.04.1","5.5.53-0ubuntu0.14.04.1","5.5.54-0ubuntu0.14.04.1","5.5.55-0ubuntu0.14.04.1","5.5.57-0ubuntu0.14.04.1","5.5.58-0ubuntu0.14.04.1","5.5.59-0ubuntu0.14.04.1","5.5.60-0ubuntu0.14.04.1","5.5.61-0ubuntu0.14.04.1","5.5.62-0ubuntu0.14.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"5.5.62-0ubuntu0.14.04.1","binary_name":"libmysqlclient18"},{"binary_version":"5.5.62-0ubuntu0.14.04.1","binary_name":"libmysqld-pic"},{"binary_version":"5.5.62-0ubuntu0.14.04.1","binary_name":"mysql-client"},{"binary_version":"5.5.62-0ubuntu0.14.04.1","binary_name":"mysql-client-5.5"},{"binary_version":"5.5.62-0ubuntu0.14.04.1","binary_name":"mysql-client-core-5.5"},{"binary_version":"5.5.62-0ubuntu0.14.04.1","binary_name":"mysql-common"},{"binary_version":"5.5.62-0ubuntu0.14.04.1","binary_name":"mysql-server"},{"binary_version":"5.5.62-0ubuntu0.14.04.1","binary_name":"mysql-server-5.5"},{"binary_version":"5.5.62-0ubuntu0.14.04.1","binary_name":"mysql-server-core-5.5"},{"binary_version":"5.5.62-0ubuntu0.14.04.1","binary_name":"mysql-source-5.5"},{"binary_version":"5.5.62-0ubuntu0.14.04.1","binary_name":"mysql-testsuite"},{"binary_version":"5.5.62-0ubuntu0.14.04.1","binary_name":"mysql-testsuite-5.5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-7221.json"}},{"package":{"name":"mariadb-10.0","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/mariadb-10.0@10.0.38-0ubuntu0.16.04.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["10.0.20-0ubuntu0.15.04.1","10.0.22-0ubuntu1","10.0.23-1","10.0.23-2","10.0.24-7","10.0.25-0ubuntu0.16.04.1","10.0.27-0ubuntu0.16.04.1","10.0.28-0ubuntu0.16.04.1","10.0.29-0ubuntu0.16.04.1","10.0.31-0ubuntu0.16.04.2","10.0.33-0ubuntu0.16.04.1","10.0.34-0ubuntu0.16.04.1","10.0.36-0ubuntu0.16.04.1","10.0.38-0ubuntu0.16.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"libmariadbd18"},{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"mariadb-client"},{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"mariadb-client-10.0"},{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"mariadb-client-core-10.0"},{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"mariadb-common"},{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"mariadb-plugin-connect"},{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"mariadb-plugin-mroonga"},{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"mariadb-plugin-oqgraph"},{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"mariadb-plugin-spider"},{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"mariadb-plugin-tokudb"},{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"mariadb-server"},{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"mariadb-server-10.0"},{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"mariadb-server-core-10.0"},{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"mariadb-test"},{"binary_version":"10.0.38-0ubuntu0.16.04.1","binary_name":"mariadb-test-data"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-7221.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}