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The SSH client must not permit GSSAPI authentication unless needed.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22474 | GEN005525 | SV-46053r1_rule | ECSC-1 | Low |
| Description |
|---|
| GSSAPI authentication is used to provide additional authentication mechanisms to applications. Allowing GSSAPI authentication through SSH exposes the system’s GSSAPI to remote hosts, increasing the attack surface of the system. GSSAPI authentication must be disabled unless needed. |
| STIG | Date |
|---|---|
| SUSE Linux Enterprise Server v11 for System z | 2015-01-26 |
Details
| Check Text ( C-43324r1_chk ) |
|---|
| Check the SSH clients configuration for the GSSAPIAuthentication setting. # grep -i GSSAPIAuthentication /etc/ssh/ssh_config | grep -v '^#' If no lines are returned, or the setting is set to "yes", this is a finding. |
| Fix Text (F-39409r1_fix) |
|---|
| Edit the SSH client configuration and set (add if necessary) a "GSSAPIAuthentication" directive set to "no". |