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AZLX-23-002410 - Amazon Linux 2023 must define default permissions for all authenticated users in such a way that the user can only read and modify their own files.

Information

Setting the most restrictive default permissions ensures that when new accounts are created, they do not have unnecessary access.

Satisfies: SRG-OS-000480-GPOS-00228, SRG-OS-000480-GPOS-00230

Solution

Configure Amazon Linux 2023 to define default permissions for all authenticated users in such a way that the user can only read and modify their own files.

Add or edit the lines for the "UMASK" parameter in the "/etc/login.defs" file to "077":

UMASK 077

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Amazon_Linux_2023_V1R4_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-274145r1120423_rule, STIG-ID|AZLX-23-002410, Vuln-ID|V-274145

Plugin: Unix

Control ID: b63667df4f0491719c0752621bd9fffeea8c11198c973148dcc0b2fb139ae9d6