Description


Guilherme de Almeida Suckevicz



2020-02-13 20:42:00 UTC

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.

Reference:
https://seclists.org/oss-sec/2020/q1/55

Upstream commit:
https://github.com/MariaDB/server/commit/9d18b6246755472c8324bf3e20e234e08ac45618



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