Walter Underwood commented on SOLR-11971:

Sorry, figured it out after I posted that.


Does the default config enable the dataimporthandler? We only have it enabled 
on the very old clusters (Solr 3). This is a fine excuse for shutting them down.

> CVE-2018-1308: XXE attack through DIH's dataConfig request parameter
> --------------------------------------------------------------------
>                 Key: SOLR-11971
>                 URL: https://issues.apache.org/jira/browse/SOLR-11971
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: contrib - DataImportHandler
>            Reporter: Uwe Schindler
>            Assignee: Uwe Schindler
>            Priority: Major
>             Fix For: 6.6.3, 7.3, master (8.0)
>         Attachments: ApacheSolrDIH-XXE.pdf, SOLR-11971.patch
> We got a security report about an XXE attack when using the 
> {{&dataConfig=<inlinexml>}} of Solr's DataImportHandler. See the attached PDF 
> file with full details (I converted it to PDF, originally it was a DOC file).

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