firefox, chrome, opera all claim gmail security issue.

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iwishitwouldwork
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Joined: 2014/02/08 14:56:39

firefox, chrome, opera all claim gmail security issue.

Post by iwishitwouldwork » 2020/11/17 00:22:07

I'm trying to open gmail from my wired enet Centos machine. Opera says, in part:
Your connection is not private. Attackers might be trying to steal your information from mail.google.com.... NET:ERR_CERT_AUTHORITY_INVALID
Firefox says, in part:
Did Not Connect: Potential Security Issue Firefox detected a potential security threat and did not continue to mail.google.com because this website requires a secure connection. ... mail.google.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. ... The issue is most likely with the website, and there is nothing you can do to resolve it. ... Error code: SEC_ERROR_UNKNOWN_ISSUER
Centos 8
Firefox is supposedly up-to-date, per Help->About
Opera should be up-to-date.
Chrome should be, too.
Patches up to date.

Okay, so, what do I do? Is this my problem? gmail's? Firefox?

This is probably the wrong place for this post, but where else can I try? I reported this to CISA.

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KernelOops
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Re: firefox, chrome, opera all claim gmail security issue.

Post by KernelOops » 2020/11/17 09:05:50

Maybe there is a proxy/snif device in between, that runs with its own certificate, in order to decrypt TLS connections?

Its a typical in corporate environments.
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I love my computer - all my friends live there.
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iwishitwouldwork
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Joined: 2014/02/08 14:56:39

Re: firefox, chrome, opera all claim gmail security issue.

Post by iwishitwouldwork » 2020/11/17 15:10:28

Ah, well, this is my house. Not a corporate enviro. I've been here 20 years.
And yes, things do change in 20 years, so maybe this is new.
The only evidence I have that points to any culprit is that the page that
fails, I go to tools->page info-> security the result that comes up mentions
the twowire modem. but i don't know whether that proves anything.

and it's bloody AT&T uverse, which -- to those who know -- means
customer support is practically hostile.

anybody know how to contact google support?

this is a recent development. just in the last five minutes or so before
i started typing this i was
1. NOT able to get in to gmail via a gmail.com bookmark
2. WAS able to get in by going to myaccount.google.com and then to
gmail.
3. NOT able to get in by going to myaccount.google.com and then
to gmail. Yup, direct contradiction of number 2.

It almost seems like i need to change internet providers just as a diagnostic.
i hate to go to all that bother, though. but even if i do that, i wouldn't know
what the results would mean. if spectrum worked, and ATT didn't, what's
that prove? if both failed, what's that prove?

any ideas?

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TrevorH
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Re: firefox, chrome, opera all claim gmail security issue.

Post by TrevorH » 2020/11/17 16:56:14

Try rebooting your router. There are malware executables out that infect routers direct and hijack the built-in dns servers to point to spoof sites. AFAIK those are not persistent and do not survive a reboot.
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iwishitwouldwork
Posts: 76
Joined: 2014/02/08 14:56:39

Re: firefox, chrome, opera all claim gmail security issue.

Post by iwishitwouldwork » 2020/11/18 06:05:02

Yup, did the reboot early on. No joy. Did it with a brutal power
cycling -- 5 min off. Took 5 mins to reboot.

I think I have a scheme to get a new modem. So if I do that
it'll probably take a few days to get that experiment done.

The thing is -- it's intermittent. IMHO that tends to indicate
hardware as opposed to software.

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