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UBTU-24-400220 - Ubuntu 24.04 LTS must store only encrypted representations of passwords.
Information
Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. If the information system or application allows the user to consecutively reuse their password when that password has exceeded its defined lifetime, the end result is a password that is not changed per policy requirements.Solution
Configure Ubuntu 24.04 LTS to store encrypted representations of passwords.Add or modify the "sha512" parameter value to the following line in "/etc/pam.d/common-password" file:
password [success=1 default=ignore] pam_unix.so obscure sha512 shadow rounds=100000
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_CAN_Ubuntu_24-04_LTS_V1R4_STIG.zip
Item Details
Audit Name: DISA Canonical Ubuntu 24.04 LTS STIG v1r4
Category: IDENTIFICATION AND AUTHENTICATION
References: 800-53|IA-5(1)(d), CAT|II, CCI|CCI-004062, Rule-ID|SV-270725r1101789_rule, STIG-ID|UBTU-24-400220, Vuln-ID|V-270725
Plugin: Unix
Control ID: f125b0493ce626214d195a0403cccb24ac85d4bf3405f7abdd4ec7cc68eb1e02