Ensure Temporary System Account Passwords Are Cleaned Up

MediumLevel 1Automatedtdsql

Description

TDSQL creates temporary system accounts during certain management operations (such as privilege migration and DCN synchronization). After the operation completes, temporary accounts should be cleaned up. Runs the mysql client against the TDSQL data node selected by TDSQL_MYSQL_OPTS (e.g. "-h10.0.0.5 -P4001 -utdsql_audit"); keep the password in ~/.my.cnf or a login path rather than MYSQL_PWD or the command line (see 1.4 and 1.5).

How it is checked

Audit method: SQL query

sql_query

out=$(mysql ${TDSQL_MYSQL_OPTS:-} -NBe "SELECT COUNT(*) FROM mysql.user WHERE User LIKE '%tmp%' OR User LIKE '%temp%'" 2>/dev/null) || exit 1; printf '%s\n' "$out"

Expected output: 0

How it is fixed

Fix method: Guidance or infrastructure patch

DROP USER IF EXISTS '<temporary account>'@'<host>'; (e.g. 'tdsqlsys_auth_tmp'@'%') and add periodic temporary-account cleanup to inspections.

Properties

Operating systems: Any
Tags: tdsqlauthentication
Reference: CIS Tencent TDSQL 10.3.22 Benchmark v1.0.0 - 12.6 Ensure Temporary System Account Passwords Are Cleaned Up

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target tdsql