RHEL 9 SSH daemon must not allow Kerberos authentication.
An XCCDF Rule
Description
<VulnDiscussion>Kerberos authentication for SSH is often implemented using Generic Security Service Application Program Interface (GSSAPI). If Kerberos is enabled through SSH, the SSH daemon provides a means of access to the system's Kerberos implementation. Vulnerabilities in the system's Kerberos implementations may be subject to exploitation. Satisfies: SRG-OS-000364-GPOS-00151, SRG-OS-000480-GPOS-00227</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-258004r958796_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Configure the SSH daemon to not allow Kerberos authentication.
Add the following line in "/etc/ssh/sshd_config", or uncomment the line and set the value to "no":
KerberosAuthentication no