Ensure Symbolic Links Are Disabled

中等級 1自動化tdsql

說明

MySQL's symbolic links feature allows placing a table's data and index files in directories outside datadir. When enabled, it can be abused for filesystem-level attacks. 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).

檢查方式

稽核方法: SQL 查詢

sql_query

out=$(mysql ${TDSQL_MYSQL_OPTS:-} -NBe "SELECT @@global.have_symlink" 2>/dev/null) || exit 1; printf '%s\n' "$out"

預期輸出: DISABLED

修補方式

修補方法: 操作指南或基礎設施修補檔

Add skip-symbolic-links = 1 to the [mysqld] section of my.cnf / the parameter template and restart the instance.

屬性

作業系統: 不限
標籤: tdsqlhardening
參考資料: CIS Tencent TDSQL 10.3.22 Benchmark v1.0.0 - 4.5 Ensure Symbolic Links Are Disabled

檢查此主機

請在您有權稽核的機器上執行此指令。掃描為唯讀操作。

shell

tmaegis scan --target tdsql