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RHEL 10 must be configured so that the Secure Shell (SSH) daemon does not allow Generic Security Service Application Program Interface (GSSAPI) authentication.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-281254RHEL-10-700510SV-281254r1184754_ruleCCI-001813medium
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. OpenSSH uses the first occurrence of a keyword it sees, and drop-in files are read in lexicographical order at the start of the configuration. Red Hat recommends using drop-in files rather than changing base configuration files.
STIGDate
Red Hat Enterprise Linux 10 Security Technical Implementation Guide2026-03-11

Related Frameworks

1 mapping across 3 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

CHG-04.1Automated Access Enforcement / Auditing
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (50) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-17(1)Monitoring and Control
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(10)Shared and Group Account Credential Change
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00
AC-3Access Enforcement
1.00
AC-3(7)Role-based Access Control
1.00
AC-4Information Flow Enforcement
1.00
AC-6(10)Prohibit Non-privileged Users from Executing Privileged Functions
1.00

+40 more (top 10 by confidence shown)

CCI1 mapping
CCI-001813
1.00

Details

Check Text (C-281254r1184754_chk)

Verify RHEL 10 SSH daemons do 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' /etc/ssh/sshd_config.d/10-stig.conf:GSSAPIAuthentication no /etc/ssh/sshd_config.d/50-redhat.conf:GSSAPIAuthentication yes Verify the runtime setting with the following command: $ sudo sshd -T | grep -i gssapiauthentication gssapiauthentication no If the "GSSAPIAuthentication" keyword is not set to "no" in a drop-in that lexicographically precedes 50-redhat.conf, no output is returned, and the use of GSSAPI authentication has not been documented with the information system security officer, this is a finding.

Fix Text (F-85720r1166713_fix)

Configure RHEL 10 SSH daemons to not allow GSSAPI authentication. In "/etc/ssh/sshd_config.d", create a drop file that will lexicographically precede 50-redhat.conf and add the following line: GSSAPIAuthentication no Restart the SSH service with the following command for the changes to take effect: $ sudo systemctl restart sshd.service