CVE-2019-17558
Improper Input Validation in Apache Solr
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).
How to fix CVE-2019-17558
To remediate CVE-2019-17558, upgrade the affected package to a fixed version below.
- —no fix listed
- —upgrade to 8.4.0 or later
Is CVE-2019-17558 being exploited?
Yes — CVE-2019-17558 is on the CISA Known Exploited Vulnerabilities (KEV) catalog. Patch immediately.
Affected packages (2)
- from 0
- >= 5.0.0, < 8.4.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:H |