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Posted to java-dev@axis.apache.org by "Donald Kwakkel (JIRA)" <ji...@apache.org> on 2017/09/11 19:38:00 UTC
[jira] [Commented] (AXIS2-5879)
WSDL20ToAxisServiceBuilder.java:1235 & 1255 (XML External Entity Injection)
[ https://issues.apache.org/jira/browse/AXIS2-5879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16161850#comment-16161850 ]
Donald Kwakkel commented on AXIS2-5879:
---------------------------------------
Thanks for analyzing.
> WSDL20ToAxisServiceBuilder.java:1235 & 1255 (XML External Entity Injection)
> ---------------------------------------------------------------------------
>
> Key: AXIS2-5879
> URL: https://issues.apache.org/jira/browse/AXIS2-5879
> Project: Axis2
> Issue Type: Bug
> Components: kernel
> Affects Versions: 1.7.6
> Reporter: Donald Kwakkel
> Priority: Critical
> Labels: security
>
> XML parser configured in WSDL20ToAxisServiceBuilder.java:1235 and 1255 does not prevent nor limit external entities resolution. This can expose the parser to an XML External Entities attack.
> Proposed solution: Always disable external entities:
> {code:java}
> public static DocumentBuilderFactory createDocumentBuilderFactory() {
> DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
> factory.setNamespaceAware(true);
> try {
> factory.setFeature("http://xml.org/sax/features/external-general-entities", false);
> factory.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
> }
> catch (ParserConfigurationException e) {
> throw new IllegalStateException(e);
> }
> return factory;
> }
> {code}
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