Code Injection in Apache Solr - CVE-2019-17558
Published: December 30, 2019 / Updated: February 20, 2022
Vulnerability identifier: #VU23850
CSH Severity: Medium
CVSS v4.0: 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
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Apache Foundation
Affected software:
Apache Solr
Apache Solr
Detailed vulnerability 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.
How to mitigate CVE-2019-17558
Install updates from vendor's website.