Merge pull request from GHSA-r2hc-pmr7-4c9r
* Configured XML parsers to resist XXE attacks Signed-off-by: Kai Kreuzer <kai@openhab.org> * added fix for avmfritz Signed-off-by: Kai Kreuzer <kai@openhab.org> * added fix for sonos Signed-off-by: Kai Kreuzer <kai@openhab.org> * added fix for vitotronic and bosesoundtouch Signed-off-by: Kai Kreuzer <kai@openhab.org> * changed avmfritz to singleton pattern Signed-off-by: Kai Kreuzer <kai@openhab.org> * addressed roku binding Signed-off-by: Kai Kreuzer <kai@openhab.org> * address all uses of DocumentBuilderFactory Signed-off-by: Kai Kreuzer <kai@openhab.org> * fixed other occurrences in roku binding Signed-off-by: Kai Kreuzer <kai@openhab.org>
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@@ -173,7 +173,13 @@ public class XMLUtils {
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: "<?xml version=\"1.0\" encoding=\"utf-8\"?>" + message;
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try {
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return XMLUtils.dbf.newDocumentBuilder().parse(new InputSource(new StringReader(response)));
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// see https://cheatsheetseries.owasp.org/cheatsheets/XML_External_Entity_Prevention_Cheat_Sheet.html
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dbf.setFeature("http://xml.org/sax/features/external-general-entities", false);
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dbf.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
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dbf.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
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dbf.setXIncludeAware(false);
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dbf.setExpandEntityReferences(false);
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return dbf.newDocumentBuilder().parse(new InputSource(new StringReader(response)));
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} catch (SAXException | ParserConfigurationException e) {
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throw new ReceivedMessageParseException(e);
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}
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