| name | CIS Ubuntu 14.04 LTS - 6.2.14 Ensure no users have .rhosts files |
| description | Verify no users have .rhosts files in their home directories |
| category | cis-os-hardening |
| version | 2.1.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","ubuntu-14.04","level-1","scored","user-accounts"] |
| cis_id | 6.2.14 |
| cis_benchmark | CIS Ubuntu Linux 14.04 LTS Benchmark v2.1.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | medium |
6.2.14 Ensure no users have .rhosts files (Scored)
Profile Applicability
- Level 1 - Server
- Level 1 - Workstation
Description
While no .rhosts files are shipped by default, users can easily create them.
Rationale
This action is only meaningful if .rhosts support is permitted in the file /etc/pam.conf. Even though the .rhosts files are ineffective if support is disabled in /etc/pam.conf, they may have been brought over from other systems and could contain information useful to an attacker for those other systems.
Audit Procedure
Run the following script and verify no results are returned:
#!/bin/bash
cat /etc/passwd | egrep -v '^(root|halt|sync|shutdown)' | awk -F: '($7 != "/sbin/nologin" && $7 != "/bin/false") { print $1 " " $6 }' | while read user dir; do
if [ ! -d "$dir" ]; then
echo "The home directory ($dir) of user $user does not exist."
else
for file in $dir/.rhosts; do
if [ ! -h "$file" -a -f "$file" ]; then
echo ".rhosts file in $dir"
fi
done
fi
done
Expected Result
No output should be returned.
Remediation
