Google Chrome and Microsoft Edge do not check the revocation status of certificates

More and more companies are using the Google Chrome browser or the new Chromium-based Microsoft Edge (codename Anaheim ) as the default browser on the Windows platform.

When distributing one of these two browsers, it should be noted that they sometimes behave differently from other browsers in terms of certificates.

Besides the fact that Chromium, unlike Internet Explorer and the previous Edge (codename Spartan ), enforces RFC 2818 , it also behaves differently when checking revocation information .

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What to consider when applying Microsoft Security Baselines?

In the context of hardening measures, it is a good idea to apply the Microsoft Security Baselines published by Microsoft to your own server landscape.

This will inevitably have an impact on PKI components. The following is an overview of the expected effects and countermeasures.

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Chrome and Safari limit SSL certificates to one year validity

Apple recently announced that the Safari browser will in future only accept certificates with a validity of 398 days, provided they were issued on or after September 1, 2020.

Mozilla and Google want to implement comparable behavior in their browsers. So the question is whether this change will have an impact on internal certification authorities - i.e. whether in future internal SSL certificates will also have to follow these rules, as was the case, for example, with Google's enforcement of RFC 2818 .

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