Learn about CVE-2021-44548, a vulnerability in Apache Solr allowing SMB network calls leading to data exfiltration and potential remote code execution. Find mitigation steps here.
An Improper Input Validation vulnerability in DataImportHandler of Apache Solr 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. This can lead to various types of attacks, including sensitive data exfiltration and potential remote code execution.
Understanding CVE-2021-44548
What is CVE-2021-44548?
The CVE-2021-44548 vulnerability in Apache Solr affects versions prior to 8.11.1 on Windows systems, allowing attackers to exploit an Input Validation issue in the DataImportHandler component.
The Impact of CVE-2021-44548
This vulnerability may result in:
Technical Details of CVE-2021-44548
Vulnerability Description
The issue stems from improper validation in DataImportHandler, enabling attackers to initiate SMB network calls, leading to potential attacks.
Affected Systems and Versions
Exploitation Mechanism
Attackers provide a Windows UNC path, triggering unintended SMB network calls, which, if successful, can lead to various attacks.
Mitigation and Prevention
Immediate Steps to Take
Long-Term Security Practices