SARA / Free Tools / KEV / CVE-2019-17558

CVE-2019-17558 on CISA KEV

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 rende

CISA KEV — Actively Exploited

Apache Solr VelocityResponseWriter Plug-In Remote Code Execution Vulnerability

Vendor / Product
— / Apache / Solr
Added to KEV
2021-11-03
BOD 22-01 due
2022-05-03
Ransomware use
Unknown
CVSS / EPSS
— — · EPSS 94.47%

01What CISA says about this vulnerability

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…

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

VendorProductVersions
na / Apache SolrApache Solr 5.0.0 to Apache Solr 8.3.1

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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