STIGQter: STIG Summary: Oracle Linux 7 Security Technical Implementation Guide Version: 2 Release: 3 Benchmark Date: 23 Apr 2021:

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

DISA Rule

SV-221713r603260_rule

Vulnerability Number

V-221713

Group Title

SRG-OS-000378-GPOS-00163

Rule Version

OL07-00-020101

Severity

CAT II

CCI(s)

• CCI-001958 - The information system authenticates an organization-defined list of specific and/or types of devices before establishing a local, remote, or network connection.

Weight

10

Fix Recommendation

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/true

Ensure that the DCCP module is blacklisted:

# vi /etc/modprobe.d/blacklist.conf

Add or update the line:

blacklist dccp

Check Contents

Verify the operating system disables the ability to load the DCCP kernel module.

# grep -r dccp /etc/modprobe.d/* | grep -i "/bin/true" | grep -v "^#"

install dccp /bin/true

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.

Vulnerability Number

V-221713

Documentable

False

Rule Version

OL07-00-020101

Severity Override Guidance

Verify the operating system disables the ability to load the DCCP kernel module.

# grep -r dccp /etc/modprobe.d/* | grep -i "/bin/true" | grep -v "^#"

install dccp /bin/true

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.

Check Content Reference

M

Target Key

4089

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