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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-26767r1_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 |
|---|---|
| SOLARIS 9 SPARC SECURITY TECHNICAL IMPLEMENTATION GUIDE | 2015-10-01 |
Details
| Check Text ( C-27776r1_chk ) |
|---|
| Check the SSH clients configuration for the GSSAPI authentication 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-24017r1_fix) |
|---|
| Edit the SSH client configuration and set (add if necessary) a GSSAPIAuthentication directive set to no. |