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The NFS exports configuration file must not have an extended ACL.


Overview

Finding ID Version Rule ID IA Controls Severity
V-22493 GEN005770 SV-26817r1_rule ECLP-1 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
HP-UX 11.23 Security Technical Implementation Guide 2015-06-12

Details

Check Text ( C-35032r2_chk )
Check the mode of the NFS export configuration file.
# echo `ls -lL /etc/dfs/dfstab` | sed -e 's/^[ \t]*//' | tr '\011' ' ' | tr -s ' ' | cut -f 1,1 -d " "

If the permissions include a + the file has an extended ACL, this is a finding.
Fix Text (F-24060r2_fix)
Remove the optional ACL from the file.
# chacl -z /etc/dfs/dfstab