Ensure root is the only UID 0 account

How it is checked

Audit method: Shell command

alt0() { command -v awk >/dev/null 2>&1 || { echo "step1: awk not installed"; return 1; }; o=$(bash -c 'awk -F: '"'"'($3 == 0) { print $1 }'"'"' /etc/passwd' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- root || { echo step1: missing root; return 1; }; }; if alt0; then echo compliant; fi

Expected output

compliant

How it is fixed

Fix method: Guidance or infrastructure patch

Run the following command to change the root account UID to 0: # usermod -u 0 root Modify any users other than root with UID 0 and assign them a new UID.

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

tmaegis scan --target linux