Detections
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AIX7-00-002108 - If GSSAPI authentication is not required on AIX, the SSH daemon must disable GSSAPI authentication.

Information

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.

Solution

Edit "/etc/ssh/sshd_config" and remove the "GSSAPIAuthentication" setting or change the value to "no".

Refresh sshd:
# stopsrc -s sshd
# startsrc -s sshd

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_IBM_AIX_7-x_V3R2_STIG.zip

Item Details

Category: IDENTIFICATION AND AUTHENTICATION

References: 800-53|IA-11, CAT|II, CCI|CCI-002038, CCI|CCI-004895, Rule-ID|SV-215292r1050791_rule, STIG-ID|AIX7-00-002108, STIG-Legacy|SV-101639, STIG-Legacy|V-91541, Vuln-ID|V-215292

Plugin: Unix

Control ID: 5d0bfdfabe156075751a030ce3fd9f660d9d9114b57cd6cc67c49aec16609c9e