Cloud Defense Logo

Products

Solutions

Company

Book A Live Demo

CVE-2017-2301 Explained : Impact and Mitigation

Learn about CVE-2017-2301 affecting Juniper Networks Junos OS versions, causing a denial of service vulnerability in the jdhcpd daemon when receiving malicious DHCPv6 packets.

Juniper Networks products running Junos OS versions are susceptible to a denial of service vulnerability due to a crashing jdhcpd daemon when receiving a malicious DHCPv6 packet.

Understanding CVE-2017-2301

The vulnerability in the jdhcpd daemon on Juniper Networks products can lead to extended denial of service situations for subscribers.

What is CVE-2017-2301?

The jdhcpd daemon on Juniper Networks products running specific Junos OS versions is prone to crashing and restarting when receiving a malicious DHCPv6 packet, causing a denial of service.

The Impact of CVE-2017-2301

The repeated crashing of the jdhcpd process can result in an extended denial of service scenario for subscribers attempting to acquire IPv6 addresses.

Technical Details of CVE-2017-2301

Affected systems and versions, along with the exploitation mechanism, are crucial to understanding this vulnerability.

Vulnerability Description

The vulnerability allows a crafted DHCPv6 packet from a subscriber to crash and restart the jdhcpd daemon, leading to a denial of service condition.

Affected Systems and Versions

        Junos OS versions 11.4 to 15.1X53-D30 with DHCPv6 enabled
        Specific versions include 11.4R13-S3, 12.1X46-D60, 12.3R12-S2, 13.3R10, and more

Exploitation Mechanism

        A malicious DHCPv6 packet triggers the crashing and restarting of the jdhcpd daemon

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are essential to mitigate the impact of CVE-2017-2301.

Immediate Steps to Take

        Apply vendor-provided patches or updates promptly
        Monitor network traffic for any signs of DHCPv6 packet anomalies

Long-Term Security Practices

        Regularly update and patch Junos OS to prevent vulnerabilities
        Implement network segmentation to contain potential attacks

Patching and Updates

        Juniper Networks released a fix in Junos OS version 16.1R1 and subsequent releases

Popular CVEs

CVE Id

Published Date

Is your System Free of Underlying Vulnerabilities?
Find Out Now