CVE-2020-28466 Explained : Impact and Mitigation

This CVE affects all versions of the package github.com/nats-io/nats-server/server. Untrusted accounts can crash the server using specific configurations. The impact is a Denial of Service (DoS) vulnerability with a CVSS base score of 7.5.

Understanding CVE-2020-28466

This vulnerability allows untrusted accounts to exploit the NATS server, potentially leading to service disruption.

What is CVE-2020-28466?

CVE-2020-28466 is a Denial of Service (DoS) vulnerability in the NATS server, affecting all versions of the package.

The Impact of CVE-2020-28466

The vulnerability allows untrusted accounts to crash the server by manipulating service export/import cycles, posing a high availability impact.

Technical Details of CVE-2020-28466

This section provides detailed technical information about the vulnerability.

Vulnerability Description

Untrusted accounts can exploit the NATS server, causing a Denial of Service (DoS) by using specific configurations.

Affected Systems and Versions

Package: github.com/nats-io/nats-server/server
Vendor: n/a
Versions: All versions are affected

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: None
Scope: Unchanged
Availability Impact: High
Confidentiality Impact: None
Integrity Impact: None

Mitigation and Prevention

Protect your systems from CVE-2020-28466 with the following steps:

Immediate Steps to Take

Monitor for any unusual server behavior
Apply patches or updates provided by the NATS maintainers

Long-Term Security Practices

Regularly build from the git repository to incorporate fixes
Limit exposure of NATS services to untrusted users

Patching and Updates

Promptly apply patches released by the NATS maintainers to mitigate the vulnerability