STIGQter: STIG Summary: Red Hat Enterprise Linux 10 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 01 Jul 2026:

RHEL 10 must not have a Trivial File Transfer Protocol (TFTP) server package installed unless it is required by the mission, and if required, the TFTP daemon must be configured to operate in secure mode.

DISA Rule

SV-280947r1165196_rule

Vulnerability Number

V-280947

Group Title

SRG-OS-000095-GPOS-00049

Rule Version

RHEL-10-200050

Severity

CAT II

CCI(s)

• CCI-000381 - Configure the system to provide only organization-defined mission essential capabilities.

Weight

10

Fix Recommendation

Configure RHEL 10 so that TFTP operates in secure mode if installed.

If TFTP server is not required, remove it with the following command:

$ sudo dnf -y remove tftp-server

Configure the TFTP daemon to operate in secure mode with the following command:

$ sudo systemctl edit tftp.service

In the editor, enter:

[Service]
ExecStart=/usr/sbin/in.tftpd -s /var/lib/tftpboot

After making changes, reload the systemd daemon and restart the TFTP service as follows:

$ sudo systemctl daemon-reload
$ sudo systemctl restart tftp.service

Check Contents

Note: If TFTP is not required, it must not be installed. If TFTP is not installed, this rule is not applicable.

Verify RHEL 10 is configured so that TFTP operates in secure mode if installed.

Determine if TFTP server is installed with the following command:

$ sudo dnf list --installed | grep tftp-server
tftp-server.x86_64 5.2-48.el10 @rhel-10-for-x86_64-appstream-rpms

If the TFTP server package is installed and is not required, or if it is not documented with the ISSM, this is a finding.

Verify the TFTP daemon, if tftp.server is installed, is configured to operate in secure mode with the following command:

$ grep -i execstart /usr/lib/systemd/system/tftp.service
ExecStart=/usr/sbin/in.tftpd -s /var/lib/tftpboot

Note: The "-s" option ensures the TFTP server only serves files from the specified directory, which is a security measure to prevent unauthorized access to other parts of the file system.

If the "-s" option is not present in the "ExecStart" line, or if the line is missing, this is a finding.

Vulnerability Number

V-280947

Documentable

False

Rule Version

RHEL-10-200050

Severity Override Guidance

Note: If TFTP is not required, it must not be installed. If TFTP is not installed, this rule is not applicable.

Verify RHEL 10 is configured so that TFTP operates in secure mode if installed.

Determine if TFTP server is installed with the following command:

$ sudo dnf list --installed | grep tftp-server
tftp-server.x86_64 5.2-48.el10 @rhel-10-for-x86_64-appstream-rpms

If the TFTP server package is installed and is not required, or if it is not documented with the ISSM, this is a finding.

Verify the TFTP daemon, if tftp.server is installed, is configured to operate in secure mode with the following command:

$ grep -i execstart /usr/lib/systemd/system/tftp.service
ExecStart=/usr/sbin/in.tftpd -s /var/lib/tftpboot

Note: The "-s" option ensures the TFTP server only serves files from the specified directory, which is a security measure to prevent unauthorized access to other parts of the file system.

If the "-s" option is not present in the "ExecStart" line, or if the line is missing, this is a finding.

Check Content Reference

M

Target Key

5733