TMA-MYSQL-5.12
Ensure Proper Use Of ALLOW_NONEXISTENT_DEFINER
MediumLevel 1Manual reviewmysql
Description
Its critical to limit users ability to set and effective authorization ID that is used with executing a view or stored program. This grant provides a method to escalate privileges within MySQL views and procedures.
How it is checked
Audit method: Manual review
This recommendation cannot be checked automatically. A scan lists it with these instructions when you pass --include-manual.
Run SELECT GRANTEE FROM INFORMATION_SCHEMA.USER_PRIVILEGES WHERE PRIVILEGE_TYPE = 'ALLOW_NONEXISTENT_DEFINER'; Ensure only administrative users are returned in the result set.
How it is fixed
Fix method: Guidance or infrastructure patch
REVOKE ALLOW_NONEXISTENT_DEFINER ON *.* FROM '<user>'@'<host>'; for each non-administrative grantee.
Properties
- Operating systems
- Any
- Tags
- mysqldatabaseauthorizationmanual
- Reference
- CIS Oracle MySQL Community Server 8.4 Benchmark v1.1.0 - 5.12 Ensure Proper Use Of ALLOW_NONEXISTENT_DEFINER