Vulnerability identifier: #VU20062

Vulnerability 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

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Apache Solr
Client/Desktop applications / Other client software

Vendor: Apache Foundation

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: 8.1.0 - 8.1.1, 8.0.0, 7.7.0 - 7.7.2, 7.6.0, 7.5.0, 7.4.0, 7.2 - 7.2.1, 7.1 - 7.1.0, 6.6 - 6.6.6, 6.5 - 6.5.1, 6.4 - 6.4.2, 6.3 - 6.3.0, 6.2 - 6.2.1, 6.1 - 6.1.0, 6.0 - 6.0.1, 5.5 - 5.5.5, 5.4 - 5.4.1, 5.3 - 5.3.2, 5.2 - 5.2.1, 5.1 - 5.1.0, 4.10 - 4.10.4, 4.9 - 4.9.1, 4.8 - 4.8.1, 4.7 - 4.7.2, 4.6 - 4.6.1, 4.5 - 4.5.1, 4.4 - 4.4.0, 4.3 - 4.3.1, 4.2 - 4.2.1, 4.1 - 4.1.0, 4.0 - 4.0.0, 3.6 - 3.6.2, 3.5 - 3.5.0, 3.4 - 3.4.0, 3.3 - 3.3.0, 3.2 - 3.2.0, 3.1 - 3.1.0, 1.4 - 1.4.1, 1.3 - 1.3.0, 1.1, 7.3.0 - 7.3.1, 7.0.0 - 7.0.1, 5.0.0

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

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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.