Title

Disabling sending form templates with the email forms must be configured. (Cat II impact)

Discussion

InfoPath allows users to attach form templates when sending e-mail forms. If users are able to open form templates included with e-mail forms, rather than using a cached version that is previously published, an attacker could send a malicious form template with the e-mail form in an attempt to gain access to sensitive information. Note: The form template is only opened directly if the form opens with a restricted security level. Otherwise the attachment is actually a link to the published location.

Check Content

The policy value for User Configuration -> Administrative Templates -> Microsoft InfoPath 2010 -> InfoPath e-mail forms “Disable sending form template with e-mail forms” must be set to “Enabled”. Procedure: Use the Windows Registry Editor to navigate to the following key: HKCU\Software\Policies\Microsoft\Office\14.0\infopath\deployment Criteria: If the value MailXSNwithXML is REG_DWORD = 0, this is not a finding.

Fix Text

Set the policy value for User Configuration -> Administrative Templates -> Microsoft InfoPath 2010 -> InfoPath e-mail forms “Disable sending form template with e-mail forms” to “Enabled”.

Additional Identifiers

Rule ID: SV-33639r1_rule

Vulnerability ID: V-17667

Group Title: DTOO168 - Sending templates with email form

Expert Comments

CCIs tied to check.

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