Title

The smb.conf file must be group-owned by root, bin, or sys. (Cat II impact)

Discussion

If the group owner of the smb.conf file is not root or a system group, the file may be maliciously modified and the Samba configuration could be compromised.

Check Content

Check the group ownership of the smb.conf file. Default locations for this file include /etc, /etc/sfw, /etc/samba, and /etc/sfw/samba. If the system has Samba installed in non-standard locations, also check the smb.conf in those locations. Procedure: # ls -l /etc/smb.conf /etc/sfw/smb.conf /etc/samba/smb.conf /etc/sfw/samba/smb.conf If an smb.conf file is not group-owned by root, bin, or sys, this is a finding.

Fix Text

Change the group owner of the smb.conf file. Procedure: # chgrp root /etc/smb.conf /etc/sfw/smb.conf /etc/samba/smb.conf /etc/sfw/samba/smb.conf

Additional Identifiers

Rule ID: SV-227019r603265_rule

Vulnerability ID: V-227019

Group Title: SRG-OS-000480

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.