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Check: GEN001363

SUSE Linux Enterprise Server v11 for System z STIG: GEN001363 (in versions v1 r12 through v1 r9)

Title

The /etc/resolve.conf file must be group-owned by root, bin, sys or system. (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

Check the group ownership of the resolv.conf file. Procedure: # ls -lL /etc/resolv.conf If the file is not group-owned by root, bin, sys, or system, this is a finding.

Fix Text

Change the group-owner of the /etc/resolv.conf file to root, bin, sys, or system. Procedure: # chgrp root /etc/resolv.conf

Additional Identifiers

Rule ID: SV-44974r1_rule

Vulnerability ID: V-22320

Group Title: GEN001363

Expert Comments

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CCIs

CCIs tied to check.

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

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
AC-6	Least Privilege