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The Network File System (NFS) exports configuration file must not have an extended ACL.


Overview

Finding ID Version Rule ID IA Controls Severity
V-22493 GEN005770 SV-46120r1_rule Low
Description
File system extended ACLs provide access to files beyond what is allowed by the mode numbers of the files. Excessive permissions on the NFS export configuration file could allow unauthorized modification of the file, which could result in Denial of Service to authorized NFS exports and the creation of additional unauthorized exports.
STIG Date
SUSE Linux Enterprise Server v11 for System z 2016-12-20

Details

Check Text ( C-43377r1_chk )
Check the permissions of the NFS export configuration file.
# ls -lL /etc/exports
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-39461r1_fix)
Remove the extended ACL from the file.
# setfacl --remove-all /etc/exports