IBM z/OS ACF2 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-OS-000069-GPOS-00037
<GroupDescription></GroupDescription>Group -
ACF2 PSWD GSO record value must be set to require at least one uppercase character be used.
<VulnDiscussion>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...Rule Medium Severity -
SRG-OS-000071-GPOS-00039
<GroupDescription></GroupDescription>Group -
ACF2 PSWD GSO record value must be set to require at least one numeric character be used.
<VulnDiscussion>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...Rule Medium Severity -
SRG-OS-000070-GPOS-00038
<GroupDescription></GroupDescription>Group -
ACF2 PSWD GSO record value must be set to require at least one lowercase character be used.
<VulnDiscussion>Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...Rule Medium Severity -
ACF2 PSWD GSO record value must be set to require the change of at least 50 percent of the total number of characters when passwords are changed.
<VulnDiscussion>If the operating system allows the user to consecutively reuse extensive portions of passwords, this increases the chances of...Rule Medium Severity -
SRG-OS-000073-GPOS-00041
<GroupDescription></GroupDescription>Group -
ACF2 must use NIST FIPS-validated cryptography to protect passwords in the security database.
<VulnDiscussion>Passwords need to be protected at all times, and encryption is the standard method for protecting passwords. If passwords are...Rule High Severity -
SRG-OS-000076-GPOS-00044
<GroupDescription></GroupDescription>Group -
ACF2 PSWD GSO record value must be set to require a 60-day maximum password lifetime restriction.
<VulnDiscussion>Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. If the ...Rule Medium Severity -
SRG-OS-000075-GPOS-00043
<GroupDescription></GroupDescription>Group -
ACF2 PSWD GSO record value must be set to require 24 hours/one day as the minimum password lifetime.
<VulnDiscussion>Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enfo...Rule Medium Severity -
SRG-OS-000077-GPOS-00045
<GroupDescription></GroupDescription>Group -
ACF2 PSWD GSO record value must be set to prohibit password reuse for a minimum of five generations or more.
<VulnDiscussion>Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...Rule Medium Severity -
SRG-OS-000079-GPOS-00047
<GroupDescription></GroupDescription>Group -
ACF2 TSOTWX GSO record values must be set to obliterate the logon password on TWX devices.
<VulnDiscussion>To prevent the compromise of authentication information, such as passwords during the authentication process, the feedback fr...Rule Medium Severity -
SRG-OS-000079-GPOS-00047
<GroupDescription></GroupDescription>Group -
ACF2 TSOCRT GSO record values must be set to obliterate the logon to ASCII CRT devices.
<VulnDiscussion>To prevent the compromise of authentication information, such as passwords during the authentication process, the feedback fr...Rule Medium Severity -
SRG-OS-000079-GPOS-00047
<GroupDescription></GroupDescription>Group
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