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Check: GEN001369 M6

MACOSX 10.6: GEN001369 M6 (in version v1 r3)

Title

The /etc/hosts file must not have an extended ACL. (Cat II impact)

Discussion

The /etc/hosts file (or equivalent) configures local host name to IP address mappings typically taking precedence over DNS resolution. If this file is maliciously modified, it could cause the failure or compromise of security functions requiring name resolution, such as time synchronization, centralized authentication, and remote system logging.

Check Content

Open a terminal session and enter the following command to view the /etc/hosts file extended ACLs. ls -lL /etc/hosts If the permissions include a '+', the file has an extended ACL, this is a finding.

Fix Text

Open a terminal session and enter the following command to remove the extended ACLs. chmod -N /etc/hosts

Additional Identifiers

Rule ID: SV-38086r1_rule

Vulnerability ID: V-22326

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