Check: GEN001362
Title
The /etc/resolv.conf file must be owned by root. (Cat II impact)
Discussion
The resolv.conf (or equivalent) file configures the system's DNS resolver. DNS is used to resolve host names to IP addresses. If DNS configuration is modified maliciously, host name resolution may fail or return incorrect information. DNS may be used by a variety of system security functions, such as time synchronization, centralized authentication, and remote system logging.
Check Content
Verify the /etc/resolv.conf file is owned by root. Procedure: # ls -l /etc/resolv.conf If the file is not owned by root, this is a finding.
Fix Text
Change the owner of the /etc/resolv.conf file to root. # chown root /etc/resolv.conf
Additional Identifiers
Rule ID:
Vulnerability ID: V-22319
Group Title:
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000225 |
The organization employs the concept of least privilege, allowing only authorized accesses for users (and processes acting on behalf of users) which are necessary to accomplish assigned tasks in accordance with organizational missions and business functions. |
Controls
Number | Title |
---|---|
AC-6 |
Least Privilege |