STIGQter: STIG Summary: Oracle Linux 8 Security Technical Implementation Guide Version: 2 Release: 9 Benchmark Date: 01 Jul 2026:

The OL 8 SSH daemon must not allow GSSAPI authentication, except to fulfill documented and validated mission requirements.

DISA Rule

SV-248607r991589_rule

Vulnerability Number

V-248607

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

OL08-00-010522

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.

Weight

10

Fix Recommendation

Configure the SSH daemon to not allow GSSAPI authentication.

Add the following line in "/etc/ssh/sshd_config", or uncomment the line and set the value to "no":

GSSAPIAuthentication no

The SSH daemon must be restarted for the changes to take effect. To restart the SSH daemon, run the following command:

$ sudo systemctl restart sshd.service

Check Contents

Verify the SSH daemon does not allow GSSAPI authentication with the following command:

$ sudo /usr/sbin/sshd -dd 2>&1 | awk '/filename/ {print $4}' | tr -d '\r' | tr '\n' ' ' | xargs sudo grep -iH '^\s*gssapiauthentication'

GSSAPIAuthentication no

If the value is returned as "yes", the returned line is commented out, or no output is returned or has not been documented with the information system security officer (ISSO), this is a finding.

If conflicting results are returned, this is a finding.

Vulnerability Number

V-248607

Documentable

False

Rule Version

OL08-00-010522

Severity Override Guidance

Verify the SSH daemon does not allow GSSAPI authentication with the following command:

$ sudo /usr/sbin/sshd -dd 2>&1 | awk '/filename/ {print $4}' | tr -d '\r' | tr '\n' ' ' | xargs sudo grep -iH '^\s*gssapiauthentication'

GSSAPIAuthentication no

If the value is returned as "yes", the returned line is commented out, or no output is returned or has not been documented with the information system security officer (ISSO), this is a finding.

If conflicting results are returned, this is a finding.

Check Content Reference

M

Target Key

5416