Code injection in Apache Solr



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-17558
CWE-ID CWE-94
Exploitation vector Network
Public exploit Vulnerability #1 is being exploited in the wild.
Vulnerable software
 Apache Solr
Client/Desktop applications / Other client software

Vendor Apache Foundation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Code Injection

EUVDB-ID: #VU23850

Risk: Medium

CVSSv4.0: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Green]

CVE-ID: CVE-2019-17558

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in VelocityResponseWriter, when "params.resource.loader.enabled" is set to true in Apache Solr configuration. A remote authenticated user with ability to load templates or change software configuration can inject a malicious template and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apache Solr: 5.0.0 - 8.3.1

CPE2.3 External links

https://cwiki.apache.org/confluence/display/solr/SolrSecurity
https://issues.apache.org/jira/browse/SOLR-13971
https://issues.apache.org/jira/browse/SOLR-14025


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.



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