CCE-95105-3| Platform: cpe:/o:ubuntu:ubuntu_linux:20.04,cpe:/o:ubuntu:ubuntu_linux:22.04, cpe:/o:ubuntu:ubuntu_linux:23.04 | Date: (C)2021-06-15 (M)2023-09-01 |
The /etc/hosts.allow file specifies which IP addresses are permitted to connect to the host. It is intended to be used in conjunction with the /etc/hosts.deny file.
Rationale:
The /etc/hosts.allow file supports access control by IP and helps ensure that only authorized systems can connect to the server.
Parameter:
[yes/no]
Technical Mechanism:
Create /etc/hosts.allow:
# echo ALL: net / mask , net / mask , ... /etc/hosts.allow where each net / mask combination (for example, 192.168.1.0/255.255.255.0)
represents one network block in use by your organization that requires access to this system.
| 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:65948 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:92300 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:85176 |
