Consecutive login attempts for SSH must be limited to 3.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-216115 | SOL-11.1-040340 | SV-216115r603268_rule | Low |
| Description |
|---|
| Setting the authentication login limit to a low value will disconnect the attacker and force a reconnect, which severely limits the speed of such brute-force attacks. |
| STIG | Date |
|---|---|
| Solaris 11 X86 Security Technical Implementation Guide | 2021-03-01 |
Details
| Check Text ( C-17353r462478_chk ) |
|---|
| Determine if consecutive login attempts are limited to 3. # grep "^MaxAuthTries" /etc/ssh/sshd_config | grep -v Log If the output of this command is not: MaxAuthTries 6 this is a finding. Note: Solaris SSH MaxAuthTries of 6 maps to 3 actual failed attempts. |
| Fix Text (F-17351r462479_fix) |
|---|
| The root role is required. Modify the sshd_config file. # pfedit /etc/ssh/sshd_config Locate the line containing: MaxAuthTries Change it to: MaxAuthTries 6 Restart the SSH service. # svcadm restart svc:/network/ssh Note: Solaris SSH MaxAuthTries of 6 maps to 3 actual failed attempts. |