Check: PHTN-67-000087
VMware vSphere 6.7 Photon OS STIG:
PHTN-67-000087
(in versions v1 r6 through v1 r1)
Title
The Photon operating system must configure sshd to disallow Kerberos authentication. (Cat II impact)
Discussion
If Kerberos is enabled through SSH, sshd provides a means of access to the system's Kerberos implementation. Vulnerabilities in the system's Kerberos implementation may then be subject to exploitation. To reduce the attack surface of the system, the Kerberos authentication mechanism within SSH must be disabled.
Check Content
At the command line, execute the following command: # sshd -T|&grep -i KerberosAuthentication Expected result: KerberosAuthentication no If the output does not match the expected result, this is a finding.
Fix Text
Open /etc/ssh/sshd_config with a text editor. Ensure that the "KerberosAuthentication" line is uncommented and set to the following: KerberosAuthentication no At the command line, execute the following command: # service sshd reload
Additional Identifiers
Rule ID: SV-239158r675282_rule
Vulnerability ID: V-239158
Group Title: SRG-OS-000480-GPOS-00227
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000366 |
The organization implements the security configuration settings. |
Controls
Number | Title |
---|---|
CM-6 |
Configuration Settings |