TMA-ROS1-1.1.21

Ensure sticky bit is set on all world-writable directories

中等級 1自動化ros

說明

Setting the sticky bit on world writable directories prevents users from deleting or renaming files in that directory that are not owned by them. The audit searches local filesystems for world-writable directories without the sticky bit and requires none. Host-level control from the CIS ROS Melodic benchmark (Ubuntu 18.04 robot hosts); run as root.

檢查方式

稽核方法: Shell 指令

shell

command -v findmnt >/dev/null 2>&1 || exit 1
mps=$(findmnt -rn -l -o TARGET,FSTYPE | awk '$2 !~ /^(nfs|nfs4|cifs|smb3|smbfs|fuse|proc|sysfs|tmpfs|devtmpfs|devpts|cgroup|cgroup2|pstore|securityfs|debugfs|tracefs|configfs|bpf|mqueue|hugetlbfs|autofs|binfmt_misc|efivarfs|overlay|squashfs|nsfs|ramfs|fusectl|rpc_pipefs)$/ {print $1}')
out=$(for m in $mps; do find "$m" -xdev -type d \( -perm -0002 -a \! -perm -1000 \) -print 2>/dev/null; done | sort -u | head -n 50)
[ -z "$out" ] && echo compliant || { printf '%s\n' "$out"; echo 'world-writable directories without the sticky bit'; }

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 set the sticky bit on all world writable directories: # df --local -P | awk '{if (NR!=1) print $6}' | xargs -I '{}' find '{}' -xdev -type d $ -perm -0002 -a ! -perm -1000 $ 2>/dev/null | xargs -I '{}' chmod a+t '{}'

屬性

作業系統: 不限
標籤: rosros1melodicsystem
參考資料: CIS ROS Melodic Benchmark v1.0.0 - 1.1.21 Ensure sticky bit is set on all world-writable directories

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 ros