CCE-95072-5| Platform: cpe:/o:debian:debian_linux:11.x, cpe:/o:ubuntu:ubuntu_linux:20.04, cpe:/o:ubuntu:ubuntu_linux:22.04, cpe:/o:ubuntu:ubuntu_linux:23.04 | Date: (C)2020-10-15 (M)2023-09-01 |
The INFO parameter specifices that record login and logout activity will be logged.
Rationale:
SSH provides several logging levels with varying amounts of verbosity. DEBUG is specifically not recommended other than strictly for debugging SSH communications since it provides so much data that it is difficult to identify important security information. INFO level is the basic level that only records login activity of SSH users. In many situations, such as Incident Response, it is important to determine when a particular user was active on a system. The logout record can eliminate those users who disconnected, which helps narrow the field.
Fix:
Edit the /etc/ssh/sshd_config file to set the parameter as follows:
LogLevel INFO
Parameter:
[LogLevel INFO]
Technical Mechanism:
Edit the /etc/ssh/sshd_config file to set the parameter as follows:
LogLevel INFO
| 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 |
|---|
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:85148 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:87290 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:65935 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:92263 |
