Remote code execution in Apache Solr

1) Improper Authentication

EUVDB-ID: #VU22878

Risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-12409

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to insecure default configuration in solr.in.sh of Apache Solr. The "ENABLE_REMOTE_JMX_OPTS" is set to "true" by default, which allows remote JMX client applications. A remote non-authenticated attacker can bypass authentication process and gain execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apache Solr: 8.1.1 - 8.2.0

External links

http://lists.apache.org/thread.html/6640c7e370fce2b74e466a605a46244ccc40666ad9e3064a4e04a85d@%3Csolr-user.lucene.apache.org%3E
http://www.tenable.com/blog/cve-2019-12409-default-configuration-in-apache-solr-could-lead-to-remote-code-execution
http://github.com/jas502n/CVE-2019-12409/
http://issues.apache.org/jira/browse/SOLR-13647

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.