Ensure noexec option set on /var partition

低等級 2自動化cos

說明

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.

檢查方式

稽核方法: Shell 指令

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

預期輸出: compliant

修補方式

修補方法: 操作指南或基礎設施修補檔

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.

屬性

作業系統: 不限
標籤: container-optimized-oscos
參考資料: CIS Google Container-Optimized OS Benchmark v1.2.0 - 1.1.7 Ensure noexec option set on /var partition

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 cos --level 2