CVE-2020-1602 : Vulnerability Insights and Analysis

This CVE-2020-1602 article provides insights into a vulnerability in Juniper Networks JDHCPD, affecting Junos OS and Junos OS Evolved versions.

Understanding CVE-2020-1602

CVE-2020-1602 involves Juniper Networks' Dynamic Host Configuration Protocol Daemon (JDHCPD) process vulnerability.

What is CVE-2020-1602?

When JDHCPD operates in relay mode, attackers can exploit this vulnerability remotely through crafted IPv4 packets, potentially leading to code execution of the JDHCPD process.

The Impact of CVE-2020-1602

CVSS Score: 7.1 (High Severity)
Attack Vector: Adjacent Network
Integrity Impact: High
Affected Systems: Various versions of Junos OS and Junos OS Evolved.

Technical Details of CVE-2020-1602

This section covers specific technical details of the vulnerability.

Vulnerability Description

The vulnerability allows an attacker to take over the code execution of the JDHCPD process by sending crafted IPv4 packets.

Affected Systems and Versions

Junos OS versions prior to 19.3R1
Junos OS Evolved versions are unspecified.

Exploitation Mechanism

Attackers can exploit this vulnerability remotely by sending specially crafted IPv4 packets.

Mitigation and Prevention

Measures to address and prevent exploitation of CVE-2020-1602 are crucial.

Immediate Steps to Take

Update to the patched versions mentioned in the solution section.
Disable JDHCPD service if not required in the device configuration.

Long-Term Security Practices

Regularly update systems to the latest software releases.
Implement network intrusion detection and prevention systems.
Perform regular security audits.
Train employees on identifying and reporting security incidents.

Patching and Updates

Ensure that the following software releases have been implemented:

Junos OS: Versions 15.1R7-S6, 15.1X49-D200, 15.1X53-D592, and more.
Junos OS Evolved: Version 19.3R1.