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← Back to IBM z/OS ACF2 Security Technical Implementation Guide

V-223477

CAT II (Medium)

CA-ACF2 must prevent the use of dictionary words for passwords.

Rule ID

SV-223477r1001097_rule

STIG

IBM z/OS ACF2 Security Technical Implementation Guide

Version

V9R8

CCIs

CCI-004061CCI-004065CCI-000366

Discussion

If the operating system allows the user to select passwords based on dictionary words, then this increases the chances of password compromise by increasing the opportunity for successful guesses and brute-force attacks.

Check Content

From the ISPF Command Shell enter:
ACF to enter ACF2 Command shell
enter SHOW STATE

If "PSWDRSV = NO", this is a finding.

If "PSWDRSVW = NO", this is a finding.

SHOW PSwdopts

Reserved Words and Prefixes
APPL APR ASDF AUG BASIC
CADAM DEC DEMO FEB FOCUS
GAME IBM JAN JUL JUN
LOG MAR MAY NET NEW
NOV OCT PASS ROS SEP
SIGN SYS TEST TSO VALID
VTAM XXX 1234

Fix Text

Configure the GSO record to include PSWDRSV and PSWDRSVW.