All IBM z/VM TCP/IP servers must be configured for SSL/TLS connection.

From IBM z/VM Using CA VM:Secure Security Technical Implementation Guide

Associated with: CCI-002420

SV-93647r1_rule All IBM z/VM TCP/IP servers must be configured for SSL/TLS connection.

Vulnerability discussion

Information can be either unintentionally or maliciously disclosed or modified during preparation for transmission, for example, during aggregation, at protocol transformation points, and during packing/unpacking. These unauthorized disclosures or modifications compromise the confidentiality or integrity of the information.Ensuring the confidentiality of transmitted information requires the operating system to take measures in preparing information for transmission. This can be accomplished via access control and encryption.Use of this requirement will be limited to situations where the data owner has a strict requirement for ensuring data integrity and confidentiality is maintained at every step of the data transfer and handling process. When transmitting data, operating systems need to support transmission protection mechanisms such as TLS, SSL VPNs, or IPsec.

Check content

Determine SSL/TLS capability. Examine the TCP/IP config file. If the “SSLSERVERID” statement identifies at least one userID for SSL server, this is not a finding.

Fix text

Configure the “SSLSERVERID” statement to force auto logging of an SSL server before all other servers in the “AUTOLOG” list.

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