← Back to SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

V-22530

CAT II (Medium)

The Reliable Datagram Sockets (RDS) protocol must be disabled or not installed unless required.

Rule ID

SV-45975r1_rule

STIG

SUSE Linux Enterprise Server v11 for System z Security Technical Implementation Guide

Version

V1R12

CCIs

CCI-000382

Discussion

The RDS protocol is a relatively new protocol developed by Oracle for communication between the nodes of a cluster. Binding this protocol to the network stack increases the attack surface of the host. Unprivileged local processes may be able to cause the system to dynamically load a protocol handler by opening a socket using the protocol.

Check Content

Ask the SA if RDS is required by application software running on the system. If so, this is not applicable.

Verify the RDS protocol handler is prevented from dynamic loading.
# grep 'install rds' /etc/modprobe.conf /etc/modprobe.conf.local /etc/modprobe.d/* | grep ‘/bin/true’

If no result is returned, this is a finding.

Fix Text

Prevent the RDS protocol handler for dynamic loading.
# echo "install rds /bin/true" >> /etc/modprobe.conf.local