CVE-2017-12629
CriticalSummary
Apache Solr before 7.1 is vulnerable to remote code execution, which can be exploited via an XXE attack in conjunction with the Config API add-listener command, leading to the RunExecutableListener class.
Risk Assessment
Organizations may be exposed to remote code execution, potentially leading to server takeover and data leakage.
Recommendation
It is recommended to upgrade Apache Solr to version 7.1 or later and to monitor API configurations to minimize the risk associated with XXE attacks.
Original NVD description (English source)
Remote code execution occurs in Apache Solr before 7.1 with Apache Lucene before 7.1 by exploiting XXE in conjunction with use of a Config API add-listener command to reach the RunExecutableListener class. Elasticsearch, although it uses Lucene, is NOT vulnerable to this. Note that the XML external entity expansion vulnerability occurs in the XML Query Parser which is available, by default, for any query request with parameters deftype=xmlparser and 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 also that the second vulnerability relates to remote code execution using the RunExecutableListener available on all affected versions of Solr.