CVE-2021-0298 : Security Advisory and Response

A detailed overview of CVE-2021-0298 outlining the impact, technical details, and mitigation strategies.

Understanding CVE-2021-0298

This section will provide insights into the vulnerability affecting Junos OS Evolved on PTX10003 and PTX10008 platforms.

What is CVE-2021-0298?

A Race Condition in the 'show chassis pic' command in Juniper Networks Junos OS Evolved may lead to a Denial of Service (DoS) condition on FPC due to the crash of the port interface concentrator daemon (picd) process.

The Impact of CVE-2021-0298

The vulnerability could result in a sustained DoS condition if precise conditions are met, affecting versions less than 20.1R2-EVO on specified platforms.

Technical Details of CVE-2021-0298

Delve into the specifics of the vulnerability, affected systems, and the mechanism of exploitation.

Vulnerability Description

The flaw allows an attacker to crash the picd process, triggering a DoS situation on FPC.

Affected Systems and Versions

Junos OS Evolved versions prior to 20.1R2-EVO on PTX10003 and PTX10008 platforms.

Exploitation Mechanism

The vulnerability arises from a race condition in the 'show chassis pic' command execution.

Mitigation and Prevention

Learn how to address and prevent the CVE-2021-0298 vulnerability.

Immediate Steps to Take

Utilize access lists or firewall filters to restrict router access via CLI to trusted hosts and administrators only.

Long-Term Security Practices

Update to Junos OS Evolved 20.1R2-EVO, 20.2R1-EVO, or later releases to resolve the issue.

Patching and Updates

Deploy software patches to mitigate the vulnerability and enhance system security.