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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-4295r2_rule | DCPP-1 ECSC-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 |
|---|---|
| UNIX SRG | 2013-03-26 |
Details
| Check Text ( C-1875r2_chk ) |
|---|
| Examine the sshd configuration file. cat /opt/ssh/etc/sshd_config | tr '\011' ' ' | tr -s ' ' | sed -e 's/^[ \t]*//' | grep -v '^#' | grep -i "Protocol" If Protocol 2,1 or Protocol 1 are defined on a line without a leading comment, this is a finding. |
| Fix Text (F-4206r2_fix) |
|---|
| Edit the configuration file and modify the Protocol line. Protocol 2 Restart sshd: /sbin/init.d/secsh stop /sbin/init.d/secsh start |