CVE-2019-0050 : What You Need to Know

A denial of service vulnerability in Juniper Networks Junos OS affecting SRX1500 devices due to the crash of the srxpfe process under heavy traffic conditions.

Understanding CVE-2019-0050

This CVE involves a specific scenario where the srxpfe process crashing can lead to a denial of service on SRX1500 devices.

What is CVE-2019-0050?

Under heavy traffic, the srxpfe process crashing can cause a denial of service on SRX1500 devices, impacting traffic forwarding.

The Impact of CVE-2019-0050

CVSS Base Score: 7.5 (High)
Attack Vector: Network
Availability Impact: High
No known malicious exploitation

Technical Details of CVE-2019-0050

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows the srxpfe process to crash under heavy traffic, leading to a denial of service condition on SRX1500 devices.

Affected Systems and Versions

Junos OS 15.1X49-D170 and earlier on SRX1500
Junos OS 17.3R3-S7 and earlier on SRX1500
Junos OS 17.4R2-S8, 17.4R3 on SRX1500
Junos OS 18.1R3-S8 on SRX1500
Junos OS 18.2R3 on SRX1500
Junos OS 18.3R2 on SRX1500
Junos OS 18.4R2 on SRX1500

Exploitation Mechanism

The vulnerability occurs in the srxpfe process under heavy traffic conditions, leading to a crash and subsequent denial of service.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-0050 vulnerability.

Immediate Steps to Take

Apply the provided software updates promptly.
Monitor network traffic for any unusual patterns.

Long-Term Security Practices

Regularly update Junos OS to the latest versions.
Implement traffic monitoring and anomaly detection mechanisms.

Patching and Updates

Update to the following software releases: 15.1X49-D170, 17.3R3-S7(pending), 17.4R2-S8, 17.4R3, 18.1R3-S8, 18.2R3, 18.3R2, 18.4R2, 19.1R1, and subsequent releases.