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The system must require passwords to contain no more than three consecutive repeating characters.


Overview

Finding ID Version Rule ID IA Controls Severity
V-11975 GEN000680 SV-38675r1_rule IAIA-1 IAIA-2 Medium
Description
To enforce the use of complex passwords, the number of consecutive repeating characters is limited. Passwords with excessive repeated characters may be more vulnerable to password-guessing attacks.
STIG Date
AIX 5.3 Security Technical Implementation Guide 2012-05-25

Details

Check Text ( C-36902r1_chk )
Check the maxrepeats setting.

Procedure:

# grep -i maxrepeats /etc/security/user
OR
# lsuser -a maxrepeats ALL

If the maxrepeats setting is greater than 3, this is a finding.
Fix Text (F-32056r1_fix)
Use the chsec command to set maxrepeats to 3.

# chsec -f /etc/security/user -s default -a maxrepeats=3

# chuser maxrepeats=3 < user id >