Remote code execution in Apache Solr DataImportHandler

1) Exposed dangerous method or function

EUVDB-ID: #VU20062

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2019-0193

CWE-ID: CWE-749 - Exposed Dangerous Method or Function

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to DataImportHandler module in Apache Solr has a feature in which the whole DIH configuration can come from a request's "dataConfig" parameter. The debug mode of the DIH admin screen uses this to allow convenient debugging / development of a DIH config. A remote attacker can send a specially crafted reuqest to the affected application and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apache Solr: 1.1 - 8.1.1

External links

http://issues.apache.org/jira/browse/SOLR-13669

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?

Yes. This vulnerability is being exploited in the wild.