The Oracle REMOTE_OS_AUTHENT parameter must be set to FALSE.

From Oracle Database 12c Security Technical Implementation Guide

Associated with: CCI-000366

SV-75915r1_rule The Oracle REMOTE_OS_AUTHENT parameter must be set to FALSE.

Vulnerability discussion

Setting this value to TRUE allows operating system authentication over an unsecured connection. Trusting remote operating systems can allow a user to impersonate another operating system user and connect to the database without having to supply a password. If REMOTE_OS_AUTHENT is set to true, the only information a remote user needs to connect to the database is the name of any user whose account is setup to be authenticated by the operating system.

Check content

From SQL*Plus: select value from v$parameter where name = 'remote_os_authent'; If the value returned does not equal FALSE, this is a finding.

Fix text

Document remote OS authentication in the System Security Plan. If not required or not mitigated to an acceptable level, disable remote OS authentication. From SQL*Plus: alter system set remote_os_authent = FALSE scope = spfile; The above SQL*Plus command will set the parameter to take effect at next system startup.

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