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CVE-2018-8010

Published: 21 May 2018

This vulnerability in Apache Solr 6.0.0 to 6.6.3, 7.0.0 to 7.3.0 relates to an XML external entity expansion (XXE) in Solr config files (solrconfig.xml, schema.xml, managed-schema). In addition, Xinclude functionality provided in these config files is also affected in a similar way. The vulnerability can be used as XXE using file/ftp/http protocols in order to read arbitrary local files from the Solr server or the internal network. Users are advised to upgrade to either Solr 6.6.4 or Solr 7.3.1 releases both of which address the vulnerability. Once upgrade is complete, no other steps are required. Those releases only allow external entities and Xincludes that refer to local files / zookeeper resources below the Solr instance directory (using Solr's ResourceLoader); usage of absolute URLs is denied. Keep in mind, that external entities and XInclude are explicitly supported to better structure config files in large installations. Before Solr 6 this was no problem, as config files were not accessible through the APIs.

Notes

AuthorNote
sbeattie
Versions 5.x and earlier are not affected by the vulnerability
Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
lucene-solr
Launchpad, Ubuntu, Debian
artful Not vulnerable

bionic Not vulnerable

precise Does not exist

trusty Does not exist
(trusty was not-affected)
upstream Needs triage

xenial Not vulnerable