CCE-95637-5| Platform: cpe:/o:ubuntu:ubuntu_linux:16.04, cpe:/o:ubuntu:ubuntu_linux:18.04, cpe:/o:ubuntu:ubuntu_linux:20.04 | Date: (C)2021-03-08 (M)2023-07-04 |
The commands below change password encryption from md5 to sha512 (a much stronger hashing algorithm). All existing accounts will need to perform a password change to upgrade the stored hashes to the new algorithm.
Rationale:
The SHA-512 algorithm provides much stronger hashing than MD5, thus providing additional protection to the system by increasing the level of effort for an attacker to successfully determine passwords.
Fix:
Edit /etc/pam.d/common-password file to include sha512 option for pam_unix.so
Parameter:
[yes/no]
Technical Mechanism:
Edit /etc/pam.d/common-password file to include sha512 option for pam_unix.so
| CCSS Severity: | CCSS Metrics: |
| CCSS Score : 8.1 | Attack Vector: NETWORK |
| Exploit Score: 2.2 | Attack Complexity: HIGH |
| Impact Score: 5.9 | Privileges Required: NONE |
| Severity: HIGH | User Interaction: NONE |
| Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | Scope: UNCHANGED |
| | Confidentiality: HIGH |
| | Integrity: HIGH |
| | Availability: HIGH |
| | |
References: | Resource Id | Reference |
|---|
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:70770 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:70680 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:68690 |
