CVE-2017-12629

Published: 14 October 2017

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.

From the Ubuntu Security Team

Michael Stepankin and Olga Barinova discovered that Apache Solr was vulnerable to an XXE attack. An attacker could use this vulnerability to remotely execute code.

Priority

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package	Release	Status
lucene-solr Launchpad, Ubuntu, Debian	artful	Released (3.6.2+dfsg-10+deb9u1build0.17.10.1)
	bionic	Not vulnerable (3.6.2+dfsg-11)
	cosmic	Not vulnerable (3.6.2+dfsg-11)
	disco	Not vulnerable (3.6.2+dfsg-11)
	eoan	Not vulnerable (3.6.2+dfsg-11)
	trusty	Released (3.6.2+dfsg-2ubuntu0.1~esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Needed
	xenial	Released (3.6.2+dfsg-8ubuntu0.1)
	zesty	Ignored (end of life)

Severity score breakdown

Parameter	Value
Base score	9.8
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

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