Check: GEN006220
HP-UX 11.23 STIG:
GEN006220
(in version v1 r8)
Title
The smb.conf file must use the hosts option to restrict access to Samba. (Cat II impact)
Discussion
Samba increases the attack surface of the system and must be restricted to communicate only with systems requiring access.
Check Content
Examine the smb.conf file. # cat /etc/opt/samba/smb.conf | tr '\011' ' ' | tr -s ' ' | sed -e 's/^[ \t]*//' | grep -v "^#" | egrep "^hosts|^ hosts allow|^hosts deny" If the hosts option is not present to restrict access to a list of authorized hosts and networks, this is a finding.
Fix Text
Edit the smb.conf file and set the hosts option to permit only authorized hosts access Samba. An example might be: hosts allow = 127.0.0.1 192.168.2.0/24 192.168.3.0/24 hosts deny = 0.0.0.0/0 The above will only allow SMB connections from the localhost and from the two private networks 192.168.2 and 192.168.3. All other connections will be refused as soon as the client sends its first packet.
Additional Identifiers
Rule ID: SV-35107r1_rule
Vulnerability ID: V-1030
Group Title: GEN006220
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000225 |
The organization employs the concept of least privilege, allowing only authorized accesses for users (and processes acting on behalf of users) which are necessary to accomplish assigned tasks in accordance with organizational missions and business functions. |
Controls
| Number | Title |
|---|---|
| AC-6 |
Least Privilege |