Audio devices must not have extended ACLs.

From Oracle Linux 5 Security Technical Implementation Guide

Associated with: CCI-000225

SV-63293r1_rule Audio devices must not have extended ACLs.

Vulnerability discussion

File system ACLs can provide access to files beyond what is allowed by the mode numbers of the files.

Check content

Check the permissions of audio devices. # ls -lL /dev/audio* /dev/snd/* If the permissions include a '+', the file has an extended ACL. If the file has an extended ACL and it has not been documented with the IAO, this is a finding.

Fix text

Remove the extended ACL from the file. # setfacl --remove-all [device file]

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