The CA-TSS NEWPW control options must be properly set.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223886	TSS0-ES-000130	SV-223886r877727_rule		Medium

Description
If the private key is stolen, this will lead to the compromise of the authentication and non-repudiation gained through PKI because the attacker can use the private key to digitally sign documents and pretend to be the authorized user. Satisfies: SRG-OS-000071-GPOS-00039, SRG-OS-000072-GPOS-00040, SRG-OS-000075-GPOS-00043, SRG-OS-000480-GPOS-00225, SRG-OS-000266-GPOS-00101, SRG-OS-000279-GPOS-00109

Description

If the private key is stolen, this will lead to the compromise of the authentication and non-repudiation gained through PKI because the attacker can use the private key to digitally sign documents and pretend to be the authorized user. Satisfies: SRG-OS-000071-GPOS-00039, SRG-OS-000072-GPOS-00040, SRG-OS-000075-GPOS-00043, SRG-OS-000480-GPOS-00225, SRG-OS-000266-GPOS-00101, SRG-OS-000279-GPOS-00109

STIG	Date
IBM z/OS TSS Security Technical Implementation Guide	2023-09-19

Details

Check Text ( C-25559r516057_chk )
From the ISPF Command Shell enter: TSS MODIFY STATUS If the NEWPW Control Option values conform to the following requirements, this is not a finding. NEWPW(MIN=8,WARN=10, MINDAYS=1, NR=0, ID, TS, SC, RS, FA, FN, MC, UC, LC) NOTE: For the Option SC, the PASSCHAR control option should be set to the allowable list defined in CA Top Secret for z/OS Control Options Guide. NOTE: For the Option RS, at a minimum use the reserved word prefix list found in the site security plan.

Check Text ( C-25559r516057_chk )

From the ISPF Command Shell enter:
TSS MODIFY STATUS

If the NEWPW Control Option values conform to the following requirements, this is not a finding.

NEWPW(MIN=8,WARN=10, MINDAYS=1, NR=0, ID, TS, SC, RS, FA, FN, MC, UC, LC)

NOTE: For the Option SC, the PASSCHAR control option should be set to the allowable list defined in CA Top Secret for z/OS Control Options Guide.

NOTE: For the Option RS, at a minimum use the reserved word prefix list found in the site security plan.

Fix Text (F-25547r516058_fix)
Note: Support of mixed case passwords can only be set when the security file has been copied by TSSXTEND with the option NEWPWBLOCK. Configure the NEWPW Control Option values conform to the following requirements: NEWPW(MIN=8,WARN=10, MINDAYS=1, NR=0, ID, TS, SC, RS, FA, FN, MC, UC, LC) NOTE: For the Option SC, the PASSCHAR control option should be set to the allowable list defined in CA Top Secret for z/OS Control Options Guide. NOTE: For the Option RS, at a minimum use the reserved word prefix list found in the site security plan.

Fix Text (F-25547r516058_fix)

Note: Support of mixed case passwords can only be set when the security file has been copied by TSSXTEND with the option NEWPWBLOCK.

Configure the NEWPW Control Option values conform to the following requirements:

NEWPW(MIN=8,WARN=10, MINDAYS=1, NR=0, ID, TS, SC, RS, FA, FN, MC, UC, LC)

NOTE: For the Option SC, the PASSCHAR control option should be set to the allowable list defined in CA Top Secret for z/OS Control Options Guide.

NOTE: For the Option RS, at a minimum use the reserved word prefix list found in the site security plan.