The ESXi host Secure Shell (SSH) daemon must ignore .rhosts files.

An XCCDF Rule

Description

<VulnDiscussion>SSH trust relationships mean a compromise on one host can allow an attacker to move trivially to other hosts. SSH can emulate the behavior of the obsolete "rsh" command in allowing users to enable insecure access to their accounts via ".rhosts" files.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>

ID: SV-258738r933275_rule
Severity: Medium
References: CCI-000767
Updated: 17 days ago

From an ESXi shell, run the following command:

# esxcli system ssh server config set -k ignorerhosts -v yes

or
From a PowerCLI command prompt while connected to the ESXi host, run the following commands:

$esxcli = Get-EsxCli -v2
$arguments = $esxcli.system.ssh.server.config.set.CreateArgs()
$arguments.keyword = 'ignorerhosts'
$arguments.value = 'yes'
$esxcli.system.ssh.server.config.set.Invoke($arguments)

The ESXi host Secure Shell (SSH) daemon must ignore .rhosts files.

Description

Remediation - Manual Procedure