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HDFS-16410. Insecure Xml parsing in OfflineEditsXmlLoader (#3854)

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Contributed by Ashutosh Gupta
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Ashutosh Gupta 2022-01-05 21:21:14 +05:30 committed by GitHub
parent e1d0aa9ee5
commit 43e5218a86
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/offlineEditsViewer/OfflineEditsXmlLoader.java
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@ -86,6 +86,10 @@ public OfflineEditsXmlLoader(OfflineEditsVisitor visitor,
public void loadEdits() throws IOException {
try {
XMLReader xr = XMLReaderFactory.createXMLReader();
xr.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);
xr.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
xr.setFeature("http://xml.org/sax/features/external-general-entities", false);
xr.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
xr.setContentHandler(this);
xr.setErrorHandler(this);
xr.setDTDHandler(null);