CVE-2020-1668 : Security Advisory and Response

On Juniper Networks EX2300 Series, a vulnerability can cause high CPU load due to the receipt of specific multicast packets on the layer 2 interface.

Understanding CVE-2020-1668

This CVE affects Junos OS on EX2300 Series devices.

What is CVE-2020-1668?

This CVE describes a vulnerability where receiving specific multicast packets on the layer 2 interface of Juniper Networks EX2300 Series can lead to high CPU load and potential traffic interruptions.

The Impact of CVE-2020-1668

CVSS Score: 6.5 (Medium Severity)
Attack Vector: Adjacent Network
Availability Impact: High
Privileges Required: None
Attack Complexity: Low
The vulnerability can result in a significant CPU load, potentially causing service disruption.

Technical Details of CVE-2020-1668

This section provides in-depth technical information about the vulnerability.

Vulnerability Description

Receipt of specific multicast packets can lead to a high CPU load.

Affected Systems and Versions

Platforms: EX2300 Series
Junos OS Versions Affected: 18.1 to 20.1 (specific versions mentioned in JSON data)

Exploitation Mechanism

The issue is triggered by the reception of specific multicast packets on the layer 2 interface.

Mitigation and Prevention

Mitigation steps to address and prevent exploitation of the vulnerability.

Immediate Steps to Take

Apply the provided software updates to the affected Junos OS versions.

Long-Term Security Practices

Regularly monitor network traffic and system resource utilization.
Implement security best practices and network segmentation to mitigate risks.

Patching and Updates

Juniper Networks has released updated software versions to address this vulnerability for various affected Junos OS versions.