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7.5 High

CVE-2019-17558 Apache Solr VelocityResponseWriter Plug-In Remote Code Execution Vulnerability

Active exploitation observed

· CISA KEV catalogue
Required action Apply updates per vendor instructions.
Ransomware campaigns Not observed so far
Weakness CWE-74

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).

Affected products and versions

Product Affected versions Fixed in
Apache Solr Versions not published

Other CVEs of Apache Solr

The 3 CVEs of Apache Solr →
CVE-2020-13957 Apache Solr versions 6.6.0 to 6.6.6, 7.0.0 to 7.7.3 and 8.0.0 to 8.6.2 prevents some features considered dangerous… Not rated CVE-2020-13941 Reported in SOLR-14515 (private) and fixed in SOLR-14561 (public), released in Solr version 8.6.0 Not rated
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