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XCCDF
Solaris 11 SPARC Security Technical Implementation Guide
SRG-OS-000480
The sshd server must bind the X11 forwarding server to the loopback address.
The sshd server must bind the X11 forwarding server to the loopback address.
An XCCDF Rule
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The sshd server must bind the X11 forwarding server to the loopback address.
Medium Severity
<VulnDiscussion>As enabling X11 Forwarding on the host can permit a malicious user to secretly open another X11 connection to another remote client during the session and perform unobtrusive activities such as keystroke monitoring, if the X11 services are not required for the system's intended function, they should be disabled or restricted as appropriate to the user's needs. By default, sshd binds the forwarding server to the loopback address and sets the hostname part of the DISPLAY environment variable to “localhost”. This prevents remote hosts from connecting to the proxy display.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>