GEN000540 - Users must not be able to change passwords more than once every 24 hours.

Information

The ability to change passwords frequently facilitates users reusing the same password. This can result in users effectively never changing their passwords. This would be accomplished by users changing their passwords when required and then immediately changing it to the original value.

Solution

Use SMIT or the chsec command to set the minimum password age to 1 week.
# chsec -f /etc/security/user -s default -a minage=1
# chsec -f /etc/security/user -s <user id> -a minage=1
OR
# smitty chuser

See Also

http://iasecontent.disa.mil/stigs/zip/U_STIG_Library_2015_07.zip

Item Details

Category: IDENTIFICATION AND AUTHENTICATION

References: 800-53|IA-5(1)(d), CAT|II, CCI|CCI-000198, Rule-ID|SV-38768r1_rule, STIG-ID|GEN000540, Vuln-ID|V-1032

Plugin: Unix

Control ID: 54bd404bbdb04a95f8d24842ff10d9e3a4f03d3251ce9a64b0b74d5a9124917b