CVE-2019-18817 : Vulnerability Insights and Analysis

Istio versions prior to 1.3.5 are vulnerable to a Denial of Service attack due to a specific configuration setting. Learn more about the impact, technical details, and mitigation steps.

Understanding CVE-2019-18817

Istio 1.3.x versions are susceptible to a Denial of Service vulnerability related to a specific configuration setting.

What is CVE-2019-18817?

This CVE identifies a vulnerability in Istio versions before 1.3.5 that allows for a Denial of Service attack due to a misconfigured setting.

The Impact of CVE-2019-18817

Istio versions 1.3.x are affected by a Denial of Service risk
The vulnerability stems from the continue_on_listener_filters_timeout setting being set to True

Technical Details of CVE-2019-18817

Istio's vulnerability details and affected systems.

Vulnerability Description

The vulnerability in Istio 1.3.x versions allows for a Denial of Service attack due to a misconfigured setting.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: Istio versions prior to 1.3.5

Exploitation Mechanism

The vulnerability is exploited by manipulating the continue_on_listener_filters_timeout setting to trigger a Denial of Service attack.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-18817 vulnerability.

Immediate Steps to Take

Upgrade Istio to version 1.3.5 or newer
Adjust the continue_on_listener_filters_timeout setting to mitigate the risk

Long-Term Security Practices

Regularly update Istio to the latest versions
Monitor security advisories and apply patches promptly

Patching and Updates

Ensure Istio is regularly updated to the latest secure versions