STIGQter: STIG Summary: IBM z/OS TSS Security Technical Implementation Guide Version: 8 Release: 2 Benchmark Date: 23 Apr 2021:

IBM z/OS TELNETPARMS or TELNETGLOBALS must specify a SECUREPORT statement for systems requiring confidentiality and integrity.

DISA Rule

SV-224071r561402_rule

Vulnerability Number

V-224071

Group Title

SRG-OS-000425-GPOS-00189

Rule Version

TSS0-TN-000070

Severity

CAT II

CCI(s)

• CCI-002422 - The information system maintains the confidentiality and/or integrity of information during reception.
• CCI-002420 - The information system maintains the confidentiality and/or integrity of information during preparation for transmission.

Weight

10

Fix Recommendation

Configure the SECUREPORT and TELNETPARMS ENCRYPTION statements and/or the TELNETGLOBALS statement in the PROFILE.TCPIP file to conform to the requirements specified below.

The TELNETGLOBALS block may specify an ENCRYPTION statement that specifies one or more of the below cipher specifications.

Each TELNETPARMS block that specifies the SECUREPORT statement, an ENCRYPTION statement is coded with one or more of the below cipher specifications. And the TELNETGLOBALS block does or does not specify an ENCRYPTION statement.

To prevent the use of non FIPS 140-2 encryption, the TELNETGLOBALS block and/or each TELNETPARMS block that specifies an ENCRYPTION statement will specify one or more of the following cipher specifications:

Cipher Specifications
SSL_3DES_SHA
SSL_AES_256_SHA
SSL_AES_128_SHA

Note: Always check for the minimum allowed in FIPS 140-2.

Check Contents

Refer to the Profile configuration file specified on the PROFILE DD statement in the TCPIP started task JCL.

If the following items are in effect for the configuration specified in the TCP/IP Profile configuration file, this is not a finding.

NOTE: If an INCLUDE statement is coded in the TCP/IP Profile configuration file, the data set specified on this statement must be checked for the following items as well.

NOTE: FIPS 140-2 minimum encryption is the accepted level of encryption and will override this requirement if greater.

-The TELNETGLOBALS block that specifies an ENCRYPTION statement states one or more of the below cipher specifications.
-Each TELNETPARMS block that specifies the SECUREPORT statement, specifies an ENCRYPTION statement states one or more of the below cipher specifications. And the TELNETGLOBALS block does or does not specify an ENCRYPTION statement.

Cipher Specifications
SSL_3DES_SHA
SSL_AES_256_SHA
SSL_AES_128_SHA

Vulnerability Number

V-224071

Documentable

False

Rule Version

TSS0-TN-000070

Severity Override Guidance

Refer to the Profile configuration file specified on the PROFILE DD statement in the TCPIP started task JCL.

If the following items are in effect for the configuration specified in the TCP/IP Profile configuration file, this is not a finding.

NOTE: If an INCLUDE statement is coded in the TCP/IP Profile configuration file, the data set specified on this statement must be checked for the following items as well.

NOTE: FIPS 140-2 minimum encryption is the accepted level of encryption and will override this requirement if greater.

-The TELNETGLOBALS block that specifies an ENCRYPTION statement states one or more of the below cipher specifications.
-Each TELNETPARMS block that specifies the SECUREPORT statement, specifies an ENCRYPTION statement states one or more of the below cipher specifications. And the TELNETGLOBALS block does or does not specify an ENCRYPTION statement.

Cipher Specifications
SSL_3DES_SHA
SSL_AES_256_SHA
SSL_AES_128_SHA

Check Content Reference

M

Target Key

4102

Comments