TMA-AIX-4.1.1.8
Ensure access on /etc/ssh/ssh_config is configured
MediumLevel 1Automatedaix
Description
The /etc/ssh/ssh_config file defines SSH client behavior. The /etc/ssh/ssh_config file is the system-wide client configuration file for OpenSSH, which allows you to set options that modify the operation of the client programs. Audit: compares `ls -ld` mode (this mode or more restrictive), owner and group with the CIS values; ACLs are not evaluated.
How it is checked
Audit method: Shell command
shell
r=compliant; for f in /etc/ssh/ssh_config; do if [ -e "$f" ]; then set -- $(ls -ld "$f"); s=$(printf '%s %s %s\n' "$1" "$3" "$4" | awk -v m='rw-r--r--' -v o='root' -v g='system' '{ok=1; for(i=1;i<=9;i++) if(substr(m,i,1)=="-" && substr($1,i+1,1)!="-") ok=0; if(o!="" && $2 !~ ("^(" o ")$")) ok=0; if(g!="" && $3 !~ ("^(" g ")$")) ok=0; print (ok ? "ok" : $0)}'); [ "$s" = ok ] || r="$f: $s"; else r="$f: missing"; fi; done; echo "$r"- Expected output
compliant
How it is fixed
Fix method: Guidance or infrastructure patch
Run the following commands to set the mode, owner and group owner for /etc/ssh/ssh_config: chmod u-x,go-wx /etc/ssh/ssh_config chown root:system /etc/ssh/ssh_config
Properties
- Operating systems
- Any
- Tags
- aixssh
- Reference
- CIS IBM AIX 7 Benchmark v1.2.0 - 4.1.1.8 Ensure access on /etc/ssh/ssh_config is configured
Check this host
Run this on a machine you are allowed to audit. The scan is read-only.
shell
tmaegis scan --target aix