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Check: GEN001363 M6

MACOSX 10.6: GEN001363 M6 (in version v1 r3)

Title

The /etc/resolv.conf file must be group-owned by wheel. (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

Open a terminal session and enter the following command to verify the group ownership of the resolv.conf file. ls -lL /etc/resolv.conf If the resolv.conf file is not group owned by wheel, this is a finding.

Fix Text

Open a terminal session and enter the following command to set the group ownership of the resolv.conf file. chgrp wheel /etc/resolv.conf

Additional Identifiers

Rule ID: SV-38078r1_rule

Vulnerability ID: V-22320

Group Title:

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