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The SSH daemon must be configured to only use the SSHv2 protocol.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-4295 | GEN005500 | SV-4295r6_rule | DCPP-1 | High |
| Description |
|---|
| SSHv1 is not a DoD-approved protocol and has many well-known vulnerability exploits. Exploits of the SSH daemon could provide immediate root access to the system. |
| STIG | Date |
|---|---|
| Draft AIX Security Technical Implementation Guide | 2011-08-17 |
Details
| Check Text ( C-1875r3_chk ) |
|---|
| Locate the sshd_config file. # find / -name sshd_config # more Examine the file. If the variables Protocol 2,1 or Protocol 1 are defined on a line without a leading comment, this is a finding. If the SSH server is F-Secure, the variable name for SSH 1 compatibility is Ssh1Compatibility, not protocol. If the variable Ssh1Compatiblity is set to yes, this is a finding. |
| Fix Text (F-4206r2_fix) |
|---|
| Edit the sshd_config file and set the Protocol setting to 2. If using the F-Secure SSH server, set the Ssh1Compatibility setting to no. |