The SSH daemon must restrict login ability to specific users and/or groups.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| GEN005521-ESXI5-000103 | GEN005521-ESXI5-000103 | GEN005521-ESXI5-000103_rule | Medium |
| Description |
|---|
| Restricting SSH logins to a limited group of users, such as system administrators, prevents password-guessing and other SSH attacks from reaching system accounts and other accounts not authorized for SSH access. |
| STIG | Date |
|---|---|
| VMware ESXi v5 Security Technical Implementation Guide | 2013-01-15 |
Details
| Check Text ( C-GEN005521-ESXI5-000103_chk ) |
|---|
| Disable lock down mode. Enable the ESXi Shell. Check the SSH daemon configuration for the AllowGroups setting. # grep -i "^AllowGroups" /etc/ssh/sshd_config If "AllowGroups" is not present in the file, this is a finding. Re-enable lock down mode. |
| Fix Text (F-GEN005521-ESXI5-000103_fix) |
|---|
| Disable lock down mode. Enable the ESXi Shell. Edit the SSH daemon configuration and add/modify the "AllowGroups" keyword in the configuration. # vi /etc/ssh/sshd_config Re-enable lock down mode. |