CVE-2019-7612 : Vulnerability Insights and Analysis

An issue concerning the exposure of sensitive information has been discovered in Logstash versions prior to 5.6.15 and 6.6.1. This vulnerability occurs when Logstash logs improperly formatted URLs, potentially exposing credentials.

Understanding CVE-2019-7612

This CVE involves a sensitive data disclosure flaw in Logstash versions before 5.6.15 and 6.6.1, where malformed URLs can lead to inadvertent logging of credentials in error messages.

What is CVE-2019-7612?

The vulnerability in Logstash versions before 5.6.15 and 6.6.1 allows for the exposure of sensitive information due to improperly formatted URLs being logged, potentially revealing associated credentials.

The Impact of CVE-2019-7612

This vulnerability could result in the unintentional exposure of credentials if a misconfigured URL is included in the Logstash configuration, posing a risk of sensitive data leakage.

Technical Details of CVE-2019-7612

Logstash versions before 5.6.15 and 6.6.1 are affected by this vulnerability.

Vulnerability Description

The flaw in Logstash allows for the logging of improperly formatted URLs, leading to the inadvertent inclusion of credentials in error messages.

Affected Systems and Versions

Product: Logstash
Vendor: Elastic
Versions Affected: Before 5.6.15 and 6.6.1

Exploitation Mechanism

Attackers can exploit this vulnerability by inserting a malformed URL into the Logstash configuration, triggering the logging of credentials in error messages.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2019-7612.

Immediate Steps to Take

Upgrade Logstash to version 5.6.15 or 6.6.1 or later to mitigate the vulnerability.
Review and update Logstash configurations to ensure that URLs are properly formatted to prevent credential exposure.

Long-Term Security Practices

Regularly monitor and audit Logstash logs for any signs of sensitive information exposure.
Educate personnel on secure configuration practices to prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security updates and patches released by Elastic for Logstash to address vulnerabilities and enhance system security.