https://bz.apache.org/bugzilla/show_bug.cgi?id=63664

            Bug ID: 63664
           Summary: Veracode security issue-Improper Restriction of XML
                    External Entity Reference CWE ID 611 in
                    OOXMLPrettyPrint
           Product: POI
           Version: 4.0.x-dev
          Hardware: PC
            Status: NEW
          Severity: major
          Priority: P2
         Component: SXSSF
          Assignee: dev@poi.apache.org
          Reporter: belli...@gmail.com
  Target Milestone: ---

The product processes an XML document that can contain XML entities with URLs
that resolve to documents outside of the intended sphere of control, causing
the product to embed incorrect documents into its output. By default, the XML
entity resolver will attempt to resolve and retrieve external references. If
attacker-controlled XML can be submitted to one of these functions, then the
attacker could gain access to information about an internal network, local
filesystem, or other sensitive data. This is known as an XML eXternal Entity
(XXE) attack.

Recommendations
Configure the XML parser to disable external entity resolution.

Flaw Id: 7
Module:  poi-ooxml-4.1.0.jar
Location : OOXMLPrettyPrint.java 108

Flaw Id: 8
Module:  poi-ooxml-4.1.0.jar
Location : OOXMLPrettyPrint.java 135

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