Siemens SIMATIC S7-1500 Improper Restriction of XML External Entity Reference (CVE-2016-9318)

libxml2 2.9.4 and earlier, as used in XMLSec 1.2.23 and earlier and other products, does not offer a flag directly indicating that the current document may be read but other files may not be opened, which makes it easier for remote attackers to conduct XML External Entity XXE attacks via a crafte...