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CVE-2020-1665 : What You Need to Know

Discover the impact and solutions for CVE-2020-1665 affecting Juniper MX Series and EX9200 Series. Learn about the IPv6 DDoS protection vulnerability and how to secure your systems.

On Juniper Networks MX Series and EX9200 Series, a vulnerability exists where the IPv6 Distributed Denial of Service (DDoS) protection may not function as expected under certain conditions.

Understanding CVE-2020-1665

This CVE affects Junos OS on specific platforms and versions, potentially leading to service disruption and interruption of traffic.

What is CVE-2020-1665?

The issue involves the failure of IPv6 DDoS protection to activate in threshold conditions on Juniper MX Series and EX9200 Series, impacting network protocol operations and traffic flow.

The Impact of CVE-2020-1665

The vulnerability can overwhelm Routing Engine (RE) and Flexible PIC Concentrator (FPC) during DDoS attacks, affecting network functionality.

Technical Details of CVE-2020-1665

The vulnerability details and affected systems are essential to understand the scope of potential exploitation.

Vulnerability Description

        IPv6 DDoS protection failure under threshold conditions on specified Junos OS versions and platforms.

Affected Systems and Versions

        Platforms: MX Series/EX9200 Series
        Versions: 17.2, 17.2X75, 17.3, 17.4, 18.2, 18.2X75, 18.3

Exploitation Mechanism

        No known malicious exploitation reported by Juniper SIRT.

Mitigation and Prevention

To address CVE-2020-1665, immediate actions, best practices, and patching recommendations are crucial.

Immediate Steps to Take

        Update to fixed software releases: 17.2R3-S4, 17.2X75-D102/D110, 17.3R3-S8, 17.4R2-S11/17.4R3-S2, 18.2R2-S7/18.2R3/18.2R3-S3, 18.2X75-D30, 18.3R2-S4/18.3R3-S2

Long-Term Security Practices

        Regularly monitor security advisories from the vendor
        Employ network traffic analysis tools to detect anomalies
        Implement access controls and network segmentation

Patching and Updates

        Stay updated on Juniper Networks' security notifications and promptly apply patches when released.

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