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https://issues.apache.org/jira/browse/LUCENE-8291?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler updated LUCENE-8291:
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    Attachment: LUCENE-8291-2.patch

> Possible security issue when parsing XML documents containing external entity 
> references
> ----------------------------------------------------------------------------------------
>
>                 Key: LUCENE-8291
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8291
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: modules/queryparser
>    Affects Versions: 7.2.1
>            Reporter: Hendrik Saly
>            Assignee: Uwe Schindler
>            Priority: Major
>             Fix For: 7.4, master (8.0)
>
>         Attachments: LUCENE-8291-2.patch, LUCENE-8291.patch
>
>
> It appears that in QueryTemplateManager.java lines 149 and 198 and in 
> DOMUtils.java line 204 XML is parsed without disabling external entity 
> references (XXE). This is described in 
> [http://cwe.mitre.org/data/definitions/611.html] and possible mitigations are 
> listed here: 
> [https://www.owasp.org/index.php/XML_External_Entity_(XXE)_Prevention_Cheat_Sheet]
> All recent versions of lucene are affected.



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