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UBTU-18-010108 - The Ubuntu operating system must prohibit password reuse for a minimum of five generations.
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This audit has been deprecated and will be removed in a future update.
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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 as per policy requirements.Solution
Configure the Ubuntu operating system prevents passwords from being reused for a minimum of five generations.Add, or modify the 'remember' parameter value to the following line in '/etc/pam.d/common-password' file:
password [success=1 default=ignore] pam_unix.so sha512 shadow remember=5 rounds=5000
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_CAN_Ubuntu_18-04_LTS_V2R14_STIG.zip
Item Details
Audit Name: DISA STIG Ubuntu 18.04 LTS v2r14
References: CAT|III, CCI|CCI-000200, Rule-ID|SV-219180r610963_rule, STIG-ID|UBTU-18-010108, STIG-Legacy|SV-109691, STIG-Legacy|V-100587, Vuln-ID|V-219180
Plugin: Unix
Control ID: 94130327fecd94448125718f6e0a94720fcb8349266c311d784aa8ef62b35bd0