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Check: GEN001365

IRIX 6.5: GEN001365 (in versions v1 r1 through v1 r0.6)

Title

The /etc/resolv.conf file must not have an extended ACL. (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 /etc/resolv.conf has no extended ACL. # ls -D /etc/resolv.conf If the file has an extended ACL, this is a finding.

Fix Text

Remove the extended ACL from the file. # chmod A- /etc/resolv.conf

Additional Identifiers

Rule ID:

Vulnerability ID: V-22322

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