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by cjalmeida 566 days ago
It gets worse. ICP-Brasil, the AC mentioned in the bug reports, the the government run agency responsible for all things related to digital signatures. Digitally signing a contract, a deed, accessing tax returns…
2 comments

So you're saying it's only a matter of time until they issue a cert for x.com as well? :)
Unlike web browsers, digital signature use cases should perform revocation checks, so revoking the google.com certificate should solve that.
The problem here isn't really that one mis-issued certificate, but rather the general problematic behavior of that CA reported in TFA.

If a CA can be convinced to issue a server certificate for google.com, would you feel very comfortable trusting their contract/deed/... signing certificates?

If the government says you need to use their CA, you may feel the feelings, but you will still use them
What would stop me from purging all this CA's certificates from my computet?
I think the current "meta" is CAA records? https://blog.cloudflare.com/why-certificate-pinning-is-outda...
CAA records rely on the CAs to respect them, and this is an article about how a CA has issued a cert in violation of a CAA record.
Oh right, for some reason I was under the impression that browsers utilize the record too.
Just need to DoS the revocation server right before your digital signature is checked.