Ensure No High-Privilege Accounts Use Wildcard Hostnames

高级别 1自动化tdsql

说明

A MySQL Host field of % allows connections from any IP. High-privilege accounts (especially those holding SUPER, FILE, SHUTDOWN, etc.) should not use wildcard hostnames. 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).

检查方式

审计方法: SQL 查询

sql_query

out=$(mysql ${TDSQL_MYSQL_OPTS:-} -NBe "SELECT COUNT(*) FROM mysql.user WHERE Host = '%' AND (Super_priv = 'Y' OR File_priv = 'Y' OR Shutdown_priv = 'Y' OR Grant_priv = 'Y') AND User NOT LIKE 'tdsqlsys%'" 2>/dev/null) || exit 1; printf '%s\n' "$out"

预期输出: 0

修复方式

修复方法: 操作指南或基础设施补丁

RENAME USER '<user>'@'%' TO '<user>'@'<approved subnet, e.g. 10.0.0.%>'; for every high-privilege account returned.

属性

操作系统: 任意
标签: tdsqlprivilegesnetwork
参考: CIS Tencent TDSQL 10.3.22 Benchmark v1.0.0 - 5.4 Ensure No High-Privilege Accounts Use Wildcard Hostnames

检查本机

请在您有权审计的机器上运行此命令。扫描为只读操作。

shell

tmaegis scan --target tdsql