CVE-2021-0245 : What You Need to Know

A detailed overview of CVE-2021-0245, a vulnerability in Juniper Networks Junos OS on Junos Fusion satellite devices that allows local attackers to elevate privileges.

Understanding CVE-2021-0245

This section covers the impact, technical details, mitigation, and prevention methods related to CVE-2021-0245.

What is CVE-2021-0245?

CVE-2021-0245 is a Use of Hard-coded Credentials vulnerability in Juniper Networks Junos OS on Junos Fusion satellite devices, enabling local attackers to escalate privileges.

The Impact of CVE-2021-0245

The vulnerability has a high base score of 7.8 (CVSS v3.1) with a potential for privilege escalation and control by local attackers.

Technical Details of CVE-2021-0245

This section outlines the vulnerability description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The flaw allows local attackers to exploit hard-coded credentials on Juniper Networks Junos Fusion satellite devices.

Affected Systems and Versions

Multiple versions of Junos OS are impacted, ranging from 16.1 to 20.1, excluding specific patched releases.

Exploitation Mechanism

Attackers with local access can exploit the vulnerability to gain elevated privileges and compromise the affected device.

Mitigation and Prevention

Learn about immediate steps and long-term security practices to mitigate the risk posed by CVE-2021-0245.

Immediate Steps to Take

No viable workarounds exist. Secure the device by using access lists or firewall filters to restrict access to trusted networks.

Long-Term Security Practices

Regular patches, security updates, and network segmentation can help prevent unauthorized access and privilege escalation.

Patching and Updates

Ensure your Juniper Networks Junos OS is updated to versions like 16.1R7-S7, 17.1R3-S2, or subsequent releases to address the vulnerability.