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HDFS-16766. XML External Entity (XXE) attacks can occur while processing XML received from an untrusted source (#4886)

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Co-authored-by: Ashutosh Gupta <ashugpt@amazon.com>
Signed-off-by: Akira Ajisaka <aajisaka@apache.org>
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Ashutosh Gupta 2022-09-27 07:44:25 +01:00 committed by GitHub
parent 5d20988f9f
commit d9f435f6ac
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hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/util/ECPolicyLoader.java
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@ -89,6 +89,11 @@ private List<ErasureCodingPolicy> loadECPolicies(File policyFile)
// Read and parse the EC policy file.
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setIgnoringComments(true);
dbf.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);
dbf.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
dbf.setFeature("http://xml.org/sax/features/external-general-entities", false);
dbf.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
dbf.setFeature("http://apache.org/xml/features/dom/create-entity-ref-nodes", false);
DocumentBuilder builder = dbf.newDocumentBuilder();
Document doc = builder.parse(policyFile);
Element root = doc.getDocumentElement();