TMA-COS-5.1.1
Ensure permissions on /etc/ssh/sshd_config are configured
MediumLevel 1Automatedcos
Description
The /etc/ssh/sshd_config file contains configuration specifications for sshd. The command below sets the owner and group of the file to root. The /etc/ssh/sshd_config file needs to be protected from unauthorized changes by non-privileged users.
How it is checked
Audit method: Shell command
shell
alt0() { command -v stat >/dev/null 2>&1 || { echo "step1: stat not installed"; return 1; }; o=$(bash -c 'stat /etc/ssh/sshd_config' 2>&1); printf '%s\n' "$o" | tr -s ' \t' ' ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'Access: (0600/-rw-------) Uid: ( 0/ root) Gid: ( 0/ root)' || { echo step1: missing 'Access: (0600/-rw-------) Uid: ( 0/ root) Gid: ( 0/ 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 commands to set ownership and permissions on /etc/ssh/sshd_config: # chown root:root /etc/ssh/sshd_config # chmod og-rwx /etc/ssh/sshd_config
Properties
- Operating systems
- Any
- Tags
- access-controlcontainer-optimized-oscosssh
- Reference
- CIS Google Container-Optimized OS Benchmark v1.2.0 - 5.1.1 Ensure permissions on /etc/ssh/sshd_config are configured
Check this host
Run this on a machine you are allowed to audit. The scan is read-only.
shell
tmaegis scan --target cos