Ensure Appropriate Core Dump Limits Are Set

低级别 2人工审核tdsql

说明

Core dumps of TDSQL processes may contain sensitive data (encryption keys, passwords, query data). Core dump generation should be restricted in production. Note: TDSQL's start.sh sets ulimit -c unlimited by default.

检查方式

审计方法: 人工审核

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Run ulimit -c for the TDSQL service account, cat /proc/sys/kernel/core_pattern and grep -r 'ulimit.*-c' <tdsql>/bin/start.sh (TDSQL start.sh sets unlimited). Core dumps must either be disabled or written only to a restricted directory (e.g. /var/core/tdsql, mode 700, owned by tdsql) with a size limit set by policy.

修复方式

修复方法: 操作指南或基础设施补丁

# Create a restricted core dump directory mkdir -p /var/core/tdsql chmod 700 /var/core/tdsql chown tdsql:tdsql /var/core/tdsql echo 'kernel.core_pattern = /var/core/tdsql/core.%e.%p.%t' >> /etc/sysctl.conf sysctl -p # Modify start.sh for production: # From: ulimit -c unlimited # To: ulimit -c 0 (or a reasonable limit)

属性

操作系统: 任意
标签: tdsqlos
参考: CIS Tencent TDSQL 10.3.22 Benchmark v1.0.0 - 1.7 Ensure Appropriate Core Dump Limits Are Set