Remote code execution occurs in Apache Solr versions < 7.1.0 with Apache Lucene < 7.1.0 by exploiting XXE in conjunction with use of a Config API add-listener command to reach the RunExecutableListener class. This can be exploited to upload malicious data to the /upload request handler or as Blind XXE using ftp wrapper in order to read arbitrary local files from the Solr server.
Note that the scanner has not tested for these issues but has instead relied only on the applicationβs self-reported version number.
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