All extensions disabled due to expiration of intermediate signing cert

I’ll still keep using Firefox since I recognize the importance of browser diversity and the hazards of a Chrome monoculture (that and vertical tabs), but, yikes.

Still, this type of oversight seems all too common even in large companies. I remember several cases from Fortune 500 companies in the past few years alone. What would be a good way to automate checking for them? Has anyone developed a tool designed specifically to avoid certificate expiry disasters?

> Still, this type of oversight seems all too common even in large companies. (...) Has anyone developed a tool designed specifically to avoid certificate expiry disasters?

LetsEncrypt renewal is supposed to be automated. [1]

I know of a company that hosted blogs for thousands of customers. They used LetsEncrypt, but the CTO considered automatic renewals a possible security risk, so they did it manually. Problem is, the expiration happened in a weekend and they "forgot" to update the certificates before that. Suffice to say that the next Monday wasn't pleasant. They automated after that.

[1] https://letsencrypt.org/about/

So did they conclude it wasn’t a security concern or did they conclude the security risk was worth the uptime?

When pressed, they admitted it was just "gut feeling". The team audited a couple ACME clients and couldn't find anything to justify not automating.

Having a root process with write-privileges to /etc on production machines and also able to communicate over the Internet definitely is a security risk.

To mitigate that you end-up building a series of privilege-restricted jobs flowing from the DMZ back into the internal network. And maintaining that might be more complicated than just manually renewing, depending upon the processes and architecture of the company.

Why would a process need to run as root or have write privileges to /etc in order to automate LetsEncrypt renewals?

I run Caddy (which uses acme-go/lego as its ACME provider) as a non-root user with no access to /etc at all. It seems to be running fine.

Using http renewal requires listening on port 80 which, by default, requires root.