The system and user default umask must be 077.

From Red Hat Enterprise Linux 5 Security Technical Implementation Guide

Part of GEN002560

Associated with IA controls: ECCD-2, ECCD-1

Associated with: CCI-000366

SV-37898r2_rule The system and user default umask must be 077.

Vulnerability discussion

The umask controls the default access mode assigned to newly created files. An umask of 077 limits new files to mode 700 or less permissive. Although umask can be represented as a 4-digit number, the first digit representing special access modes is typically ignored or required to be 0. This requirement applies to the globally configured system defaults and the user defaults for each account on the system.

Check content

Fix text

Edit local and global initialization files that contain "umask" and change them to use 077 instead of the current value.

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