CVE-2020-11020 : What You Need to Know

Faye (NPM, RubyGem) versions greater than 0.5.0 and before 1.0.4, 1.1.3, and 1.2.5 have a vulnerability that allows authentication bypass in the extension system.

Understanding CVE-2020-11020

This CVE involves an authentication bypass issue in Faye versions.

What is CVE-2020-11020?

CVE-2020-11020 is a vulnerability in Faye versions that could potentially allow any client to bypass server-side extension checks by adding extra segments to the message channel.

The Impact of CVE-2020-11020

The vulnerability has a CVSS base score of 8.5, indicating a high severity level. It poses a high risk to confidentiality and a low risk to integrity, with low privileges required for exploitation.

Technical Details of CVE-2020-11020

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability in Faye versions allows for authentication bypass in the extension system, enabling clients to circumvent server-side extension checks.

Affected Systems and Versions

Product: Faye
Vendor: faye
Affected Versions:
= 0.5.0, < 1.0.4

= 1.1.0, < 1.1.3

= 1.2.0, < 1.2.5

Exploitation Mechanism

The vulnerability permits clients to bypass server-side extension checks by appending additional segments to the message channel.

Mitigation and Prevention

Protecting systems from CVE-2020-11020 is crucial to maintaining security.

Immediate Steps to Take

Update Faye to patched versions 1.0.4, 1.1.3, or 1.2.5 to mitigate the vulnerability.
Monitor network traffic for any suspicious activities that could indicate exploitation.

Long-Term Security Practices

Regularly update software and libraries to ensure the latest security patches are applied.
Implement strong authentication mechanisms to prevent unauthorized access.

Patching and Updates

Apply patches provided by Faye promptly to address the authentication bypass vulnerability.