Improper Input Validation Affecting org.apache.solr:solr-core package, versions [0,8.11.1)



    Attack Complexity High
    Confidentiality High

    Threat Intelligence

    EPSS 0.29% (65th percentile)
Expand this section
9.8 critical

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • published 23 Dec 2021
  • disclosed 23 Dec 2021
  • credit LaiHan

How to fix?

Upgrade org.apache.solr:solr-core to version 8.11.1 or higher.


org.apache.solr:solr-core is an open source enterprise search platform built on Apache Lucene

Affected versions of this package are vulnerable to Improper Input Validation in DataImportHandler, which allows an attacker to provide a Windows UNC path resulting in an SMB network call being made from the Solr host to another host on the network. If the attacker has wider access to the network, this may lead to SMB attacks, which may result in the exfiltration of sensitive data such as OS user hashes (NTLM/LM hashes). In case of misconfigured systems, SMB relay attacks can lead to user impersonation on SMB Shares or, in a worse-case scenario, Remote Code Execution.