CVE-2018-8010 Information

Description

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.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Reference

http://www.securityfocus.com/bid/104239 https://lists.apache.org/thread.html/r204ba2a9ea750f38d789d2bb429cc0925ad6133deea7cbc3001d96b5@3Csolr-user.lucene.apache.org3E https://mail-archives.apache.org/mod_mbox/www-announce/201805.mbox/3C08a801d3f0f924df46d300249dd479002440apache.org3E

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.5