Title

RHEL 9 must not have a Trivial File Transfer Protocol (TFTP) server package installed. (Cat I impact)

Discussion

Removing the "tftp-server" package decreases the risk of the accidental (or intentional) activation of tftp services. If TFTP is required for operational support (such as transmission of router configurations), its use must be documented with the information systems security manager (ISSM), restricted to only authorized personnel, and have access control rules established.

Check Content

Verify that RHEL 9 does not have a tftp server package installed with the following command: $ sudo dnf list --installed | grep tftp If the "tftp" package is installed, this is a finding.

Fix Text

The tftp package can be removed with the following command: $ sudo dnf remove tftp

Additional Identifiers

Rule ID: SV-257835r925492_rule

Vulnerability ID: V-257835

Group Title: SRG-OS-000480-GPOS-00227

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.