Navigate

Check: GEN005501

SUSE Linux Enterprise Server v11 for System z STIG: GEN005501 (in versions v1 r12 through v1 r9)

Title

The SSH client must be configured to only use the SSHv2 protocol. (Cat II impact)

Discussion

SSHv1 is not a DoD-approved protocol and has many well-known vulnerability exploits. Exploits of the SSH client could provide access to the system with the privileges of the user running the client.

Check Content

Check the SSH client configuration for allowed protocol versions. # grep -i protocol /etc/ssh/ssh_config | grep -v '^#' If the returned protocol configuration allows versions less than 2, this is a finding

Fix Text

Edit the /etc/ssh/ssh_config file and add or edit a "Protocol" configuration line not allowing versions less than 2.

Additional Identifiers

Rule ID: SV-45999r1_rule

Vulnerability ID: V-22456

Group Title: GEN005501

Expert Comments

Expert comments are only available to logged-in users.

CCIs

CCIs tied to check.

Number	Definition
CCI-001436	The organization disables organization-defined networking protocols within the information system deemed to be nonsecure except for explicitly identified components in support of specific operational requirements.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
No controls are assigned to this check