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Audio devices must not have extended ACLs.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22367 | GEN002330 | SV-63293r1_rule | Medium |
| Description |
|---|
| File system ACLs can provide access to files beyond what is allowed by the mode numbers of the files. |
| STIG | Date |
|---|---|
| Oracle Linux 5 Security Technical Implementation Guide | 2016-12-20 |
Details
| Check Text ( C-51995r1_chk ) |
|---|
| 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 (F-53879r1_fix) |
|---|
| Remove the extended ACL from the file. # setfacl --remove-all [device file] |