TMA-MYSQL-4.3
Ensure 'allow-suspicious-udfs' is Set to 'OFF'
MediumLevel 2Automatedmysql
Description
This option prevents attaching arbitrary shared library functions as user-defined functions by checking for at least one corresponding method named _init, _deinit, _reset, _clear, or _add. Counts allow-suspicious-udfs settings in the server option groups (my_print_defaults mysqld) and on the running server command line.
How it is checked
Audit method: Shell command
shell
c=$(my_print_defaults mysqld 2>/dev/null) || exit 1; p=$(ps -eo comm=,args= 2>/dev/null) || exit 1; n=$( { printf '%s\n' "$c"; printf '%s\n' "$p" | awk '$1=="mysqld"||$1=="mariadbd"' | tr ' ' '\n'; } | grep -Eic '^--allow[-_]suspicious[-_]udfs(=(1|on|true|yes))?$' ); echo "$n"- Expected output
0
How it is fixed
Fix method: Guidance or infrastructure patch
Remove allow-suspicious-udfs from the MySQL option files and from the server start-up command line, then restart.
Properties
- Operating systems
- Any
- Tags
- mysqldatabaseconfiguration
- Reference
- CIS Oracle MySQL Community Server 8.4 Benchmark v1.1.0 - 4.3 Ensure 'allow-suspicious-udfs' is Set to 'OFF'
Check this host
Run this on a machine you are allowed to audit. The scan is read-only.
shell
tmaegis scan --target mysql --level 2