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XCCDF
VMware vSphere 7.0 vCenter Appliance Photon OS Security Technical Implementation Guide
SRG-OS-000480-GPOS-00227
The Photon operating system must disable systemd fallback Domain Name System (DNS).
The Photon operating system must disable systemd fallback Domain Name System (DNS).
An XCCDF Rule
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The Photon operating system must disable systemd fallback Domain Name System (DNS).
Medium Severity
<VulnDiscussion>Systemd contains an ability to set fallback DNS servers. This is used for DNS lookups in the event no system-level DNS servers are configured or other DNS servers are specified in the systemd "resolved.conf" file. If uncommented, this configuration contains Google DNS servers by default and could result in DNS leaking information unknowingly in the event DNS is absent or misconfigured at the system level.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>