CCE-91968-8Platform: cpe:/o:ubuntu:ubuntu_linux:16.04 | Date: (C)2018-07-09 (M)2023-07-04 |
The /etc/security/opasswd file stores the users old passwords and can be checked to ensure that users are not recycling recent passwords.
Rationale:
Forcing users not to reuse their past 5 passwords make it less likely that an attacker will be able to guess the password. Note that these change only apply to accounts configured on the local system.
Parameter:
[number of last passwords to remember]
Technical Mechanism:
Set the pam_unix.so remember parameter to 5 in /etc/pam.d/common-password:
password sufficient pam_unix.so remember=5
Note: The default password setting in this document is the last 5 passwords. Change this number to conform to your sites password policy.
CCSS Severity: | CCSS Metrics: |
CCSS Score : 9.8 | Attack Vector: NETWORK |
Exploit Score: 3.9 | Attack Complexity: LOW |
Impact Score: 5.9 | Privileges Required: NONE |
Severity: CRITICAL | User Interaction: NONE |
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | Scope: UNCHANGED |
| Confidentiality: HIGH |
| Integrity: HIGH |
| Availability: HIGH |
| |
References: Resource Id | Reference |
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SCAP Repo OVAL Definition | oval:org.secpod.oval:def:46229 |