| name | cis-ubuntu1604-v200-3-4-1 |
| description | Ensure DCCP is disabled |
| category | cis-networking |
| version | 2.0.0 |
| author | cyberstrike-official |
| tags | ["cis","ubuntu","linux","ubuntu-16.04","networking"] |
| cis_id | 3.4.1 |
| cis_benchmark | CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 |
| tech_stack | ["ubuntu","linux"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0 - Control 3.4.1
Description
The Datagram Congestion Control Protocol (DCCP) is a transport layer protocol that supports streaming media and telephony. DCCP provides a way to gain access to congestion control, without having to do it at the application layer, but does not provide in-sequence delivery.
Rationale
If the protocol is not required, it is recommended that the drivers not be installed to reduce the potential attack surface.
Impact
None.
Audit Procedure
Command Line
Run the following commands and verify the output is as indicated:
modprobe -n -v dccp
lsmod | grep dccp
Expected Result
install /bin/true
The lsmod command should return no output.
Remediation
Command Line
Edit or create a file in the /etc/modprobe.d/ directory ending in .conf
Example: vi /etc/modprobe.d/dccp.conf
Add the following line:
install dccp /bin/true
Default Value
DCCP module is available but typically not loaded by default.
References
- CIS Ubuntu Linux 16.04 LTS Benchmark v2.0.0
CIS Controls
Version 7
9.2 Ensure Only Approved Ports, Protocols and Services Are Running - Ensure that only network ports, protocols, and services listening on a system with validated business needs, are running on each system.
Profile Applicability
- Level 2 - Server
- Level 2 - Workstation
Assessment Status
Automated