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Check: GEN005501

IRIX 6.5: GEN005501 (in versions v1 r1 through v1 r0.6)

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 '^#' # grep -i protocol /etc/openssh/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 that does not allow versions less than 2.

Additional Identifiers

Rule ID:

Vulnerability ID: V-22456

Group Title:

Expert Comments

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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