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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-45997r2_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
SUSE Linux Enterprise Server v11 for System z 2015-05-27

Details

Check Text ( C-43280r3_chk )
Locate the sshd_config file:
# more /etc/ssh/sshd_config

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.

Fix Text (F-39363r4_fix)
Edit the sshd_config file and set the "Protocol" setting to "2".

Restart the SSH daemon.
# /sbin/service sshd restart