From Oracle Database 12c Security Technical Implementation Guide
Part of SRG-APP-000516-DB-999900
Associated with: CCI-000366
Setting REMOTE_OS_ROLES to TRUE allows operating system groups to control Oracle roles. The default value of FALSE causes roles to be identified and managed by the database. If REMOTE_OS_ROLES is set to TRUE, a remote user could impersonate another operating system user over a network connection.
From SQL*Plus: select value from v$parameter where name = 'remote_os_roles'; If the returned value is not FALSE or not documented in the System Security Plan as required, this is a finding.
Document remote OS roles in the System Security Plan. If not required, disable use of remote OS roles. From SQL*Plus: alter system set remote_os_roles = FALSE scope = spfile; The above SQL*Plus command will set the parameter to take effect at next system startup.
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