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

If the Trivial File Transfer Protocol (TFTP) server is required, the OL 8 TFTP daemon must be configured to operate in secure mode.

DISA Rule

SV-248902r1106146_rule

Vulnerability Number

V-248902

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

OL08-00-040350

Severity

CAT II

CCI(s)

CCI-000366 - Implement the security configuration settings.

Weight

Fix Recommendation

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.

Check to see if TFTP server is installed with the following command:

$ sudo dnf list installed | grep tftp-server
tftp-server.x86_64 x.x-x.el8

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.

Vulnerability Number

V-248902

Documentable

False

Rule Version

OL08-00-040350

Severity Override Guidance

Check Content Reference

Target Key

5416