The SSH daemon must be configured to only use the SSHv2 protocol.

From SOLARIS 10 SPARC SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: DCPP-1

Associated with: CCI-001436

SV-39817r1_rule The SSH daemon must be configured to only use the SSHv2 protocol.

Vulnerability discussion

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.

Check content

Check the SSH daemon configuration for allowed protocol versions. # grep -i protocol /etc/ssh/sshd_config | grep -v '^#' If the variables Protocol 2,1 or Protocol 1 are defined on a line without a leading comment, this is a finding.

Fix text

Edit the configuration file and modify the Protocol line to look like: Protocol 2 Reload sshd: kill -HUP

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