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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-239518	VROM-SL-000495	SV-239518r662005_rule		Medium

Description
The Reliable Datagram Sockets (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.

STIG	Date
VMware vRealize Operations Manager 6.x SLES Security Technical Implementation Guide	2021-07-01

Details

Check Text ( C-42751r662003_chk )
Ask the SA if RDS is required by application software running on the system. If so, this is not applicable. Check that the RDS protocol handler is prevented from dynamic loading: # grep "install rds /bin/true" /etc/modprobe.conf /etc/modprobe.conf.local /etc/modprobe.d/* If no result is returned, this is a finding.

Fix Text (F-42710r662004_fix)
Prevent the RDS protocol handler from dynamic loading: # echo "install rds /bin/true" >> /etc/modprobe.conf.local