Ensure noexec option set on /var partition

低级别 2自动化cos

说明

The noexec mount option specifies that the filesystem cannot contain executable binaries. Since the /var filesystem is only intended for services to write data and not execute, set this option to ensure that users cannot run executable binaries from /var.

检查方式

审计方法: Shell 命令

shell

if ! findmnt -kn /var >/dev/null 2>&1; then echo compliant; elif findmnt -kn /var | grep -qw -- noexec; then echo compliant; else echo /var' is mounted without noexec'; fi

预期输出: compliant

修复方式

修复方法: 操作指南或基础设施补丁

Run the following command to remount /var : # mount -o remount,noexec /var /etc is stateless on Container-Optimized OS. Therefore, /etc cannot be used to make these changes persistent across reboots. The steps mentioned above needs to be performed after every boot.

属性

操作系统: 任意
标签: container-optimized-oscos
参考: CIS Google Container-Optimized OS Benchmark v1.2.0 - 1.1.7 Ensure noexec option set on /var partition

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 cos --level 2