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Improper Input Validation in Apache Solr

High severity GitHub Reviewed Published Feb 12, 2020 to the GitHub Advisory Database • Updated Jul 25, 2024

Package

maven org.apache.solr:solr-core (Maven)

Affected versions

>= 5.0.0, <= 5.5.5
>= 6.0.0, <= 6.6.6
>= 7.0.0, <= 7.7.2
>= 8.0.0, <= 8.3.1

Patched versions

8.4.0
8.4.0
8.4.0
8.4.0

Description

Apache Solr 5.0.0 to Apache Solr 8.3.1 are vulnerable to a Remote Code Execution through the VelocityResponseWriter. A Velocity template can be provided through Velocity templates in a configset velocity/ directory or as a parameter. A user defined configset could contain renderable, potentially malicious, templates. Parameter provided templates are disabled by default, but can be enabled by setting params.resource.loader.enabled by defining a response writer with that setting set to true. Defining a response writer requires configuration API access. Solr 8.4 removed the params resource loader entirely, and only enables the configset-provided template rendering when the configset is trusted (has been uploaded by an authenticated user).

References

Published by the National Vulnerability Database Dec 30, 2019
Reviewed Feb 11, 2020
Published to the GitHub Advisory Database Feb 12, 2020
Last updated Jul 25, 2024

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS score

97.509%
(100th percentile)

Weaknesses

CVE ID

CVE-2019-17558

GHSA ID

GHSA-ww97-9w65-2crx

Source code

No known source code
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