CCE-95691-2| 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 Domain Name System (DNS) is a hierarchical naming system that maps names to IP addresses for computers, services and other resources connected to a network.
Rationale:
Unless a system is specifically designated to act as a DNS server, it is recommended that the package be deleted to reduce the potential attack surface.
Fix:
Run the following command to disable DNS server # systemctl --now disable bind9
Parameter:
[yes/no]
Technical Mechanism:
Run the following command to disable DNS server # systemctl --now disable bind9
| CCSS Severity: | CCSS Metrics: |
| CCSS Score : 9.9 | Attack Vector: NETWORK |
| Exploit Score: 3.9 | Attack Complexity: LOW |
| Impact Score: 5.3 | Privileges Required: NONE |
| Severity: CRITICAL | User Interaction: NONE |
| Vector: AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H | Scope: CHANGED |
| | Confidentiality: LOW |
| | Integrity: LOW |
| | Availability: HIGH |
| | |
References: | Resource Id | Reference |
|---|
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:70821 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:70721 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:68741 |
