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Reactor Netty HttpServer 0.9.x Insufficiently Protected Credentials Vulnerability

Summary

The HttpClient from Reactor Netty, versions 0.9.x prior to 0.9.5, and versions 0.8.x prior to 0.8.16, may be used incorrectly, leading to a credentials leak during a redirect to a different domain. In order for this to happen, the HttpClient must have been explicitly configured to follow redirects.

Credit:

The information has been provided by Ludwig Bedacht and Daniel Spruth

The original article can be found at:https://tanzu.vmware.com/security/cve-2020-5404

Details

Reactor Netty HttpClient, versions 0.9.x prior to 0.9.5, and versions 0.8.x prior to 0.8.16, may be used incorrectly, leading to a credentials leak during a redirect to a different domain. In order for this to happen, the HttpClient must have been explicitly configured to follow redirects

Vulnerable Systems:

Reactor Netty 0.9 to 0.9.4

Reactor Netty 0.8 to 0.8.15

CVE Information:

CVE-2020-5404

Disclosure Timeline:
Published Date:3/3/2020

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