CVE-2021-23365 : What You Need to Know

A detailed overview of CVE-2021-23365, a vulnerability in github.com/TykTechnologies/tyk-identity-broker.

Understanding CVE-2021-23365

This CVE identifies an Authentication Bypass vulnerability in the package github.com/tyktechnologies/tyk-identity-broker before version 1.1.1, affecting SAML authentication.

What is CVE-2021-23365?

The vulnerability in tyk-identity-broker allows an attacker to bypass authentication via the Go XML parser due to lack of integrity guarantees in XML data.

The Impact of CVE-2021-23365

With a CVSS v3.1 base score of 4.8 and a Medium severity rating, this vulnerability can lead to an Authentication Bypass, potentially compromising confidentiality and integrity.

Technical Details of CVE-2021-23365

This section explores the technical specifics of the CVE.

Vulnerability Description

The flaw arises from the inadequate integrity assurance during XML round-trip operations within the XML parser, enabling unauthorized authentication bypass.

Affected Systems and Versions

The vulnerability affects versions of github.com/tyktechnologies/tyk-identity-broker prior to 1.1.1, leaving systems exposed to SAML authentication bypass.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating XML data to trick the inadequate XML parser into authenticating unauthorized requests.

Mitigation and Prevention

Discover how to address and avoid the risks associated with CVE-2021-23365.

Immediate Steps to Take

Organizations should upgrade to version 1.1.1 of tyk-identity-broker or apply patches promptly to mitigate the risk of authentication bypass.

Long-Term Security Practices

Implement strict data validation protocols, regularly update software components, and conduct security audits to enhance resilience against similar vulnerabilities.

Patching and Updates

Stay informed about security updates and best practices to protect systems from evolving threats.