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Check: GEN001365

Solaris 10 X86 STIG: GEN001365 (in versions v2 r4 through v1 r17)

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 -l /etc/resolv.conf If the permissions include a "+", 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: SV-227631r603266_rule

Vulnerability ID: V-227631

Group Title: SRG-OS-000480

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-000366	The organization implements the security configuration settings.

Controls

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

Number	Title
CM-6	Configuration Settings