Audio devices must be group-owned by root, sys, bin, or system.

From Oracle Linux 5 Security Technical Implementation Guide

Associated with: CCI-000225

SV-63341r2_rule Audio devices must be group-owned by root, sys, bin, or system.

Vulnerability discussion

Without privileged group owners, audio devices will be vulnerable to being used as eaves-dropping devices by malicious users or intruders to possibly listen to conversations containing sensitive information.

Check content

Check the group-owner of audio devices. Procedure: # ls -lL /dev/audio* /dev/snd/* If the group-owner of an audio device is not root, sys, bin, system, or audio this is a finding.

Fix text

Change the group-owner of the audio device. Procedure: # chgrp

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