The Oracle Linux operating system must be configured so that the Datagram Congestion Control Protocol (DCCP) kernel module is disabled unless required.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-221713OL07-00-020101SV-221713r958820_ruleCCI-001958medium
Description
Disabling DCCP protects the system against exploitation of any flaws in the protocol implementation.
STIGDate
Oracle Linux 7 Security Technical Implementation Guide2025-05-08

Details

Check Text (C-221713r958820_chk)

Verify the operating system disables the ability to load the DCCP kernel module. # grep -r dccp /etc/modprobe.d/* | grep -i "/bin/false" | grep -v "^#" install dccp /bin/false If the command does not return any output, or the line is commented out, and use of DCCP is not documented with the Information System Security Officer (ISSO) as an operational requirement, this is a finding. Verify the operating system disables the ability to use the DCCP kernel module. Verify the DCCP kernel module is disabled with the following command: # grep -i dccp /etc/modprobe.d/* | grep -i "blacklist" | grep -v "^#" blacklist dccp If the command does not return any output or the output is not "blacklist dccp", and use of the DCCP kernel module is not documented with the ISSO as an operational requirement, this is a finding.

Fix Text (F-36238r942864_fix)

Configure the operating system to disable the ability to use the DCCP kernel module. Create a file under "/etc/modprobe.d" with the following command: # touch /etc/modprobe.d/dccp.conf Add the following line to the created file: install dccp /bin/false Ensure that the DCCP module is blacklisted: # vi /etc/modprobe.d/blacklist.conf Add or update the line: blacklist dccp