The default global umask setting must be changed for user applications.

From Apple OS X 10.9 (Mavericks) Workstation Security Technical Implementation Guide

Associated with: CCI-000366

SV-72847r1_rule The default global umask setting must be changed for user applications.

Vulnerability discussion

The default global umask setting must be set to '027' for user applications. The setting '027' ensures that user created files and directories will be readable, but not writable, by users that share the same group id. Users with a different group id will not be able to read or write those files. This mitigates the risk that unauthorized users might be able to read and write files saved to the system by user applications.

Check content

To view the umask setting, run the following command: awk '{ print $2 }' /etc/launchd-user.conf If the command produces an error, or the result is not '027', this is a finding.

Fix text

To set the umask setting for user applications, run the following command: sudo sh -c 'echo 'umask 027' > /etc/launchd-user.conf'

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