Full Disclosure mailing list archives

Re: Expired certificate


From: Larry Seltzer <larry () larryseltzer com>
Date: Fri, 16 Jul 2010 13:15:52 -0400

It's better than nothing, but it speaks ill of the agency. Yes, the
encryption is the same.

Certificates have expiration dates so that the verification that happens
at the time the cert is acquired can have some "freshness." So if it's
just expired, well it's no biggie, especially if this is a plain SSL
certificate which doesn't verify all that much anyway.

-----Original Message-----
From: full-disclosure-bounces () lists grok org uk
[mailto:full-disclosure-bounces () lists grok org uk] On Behalf Of Daniel
Sichel
Sent: Friday, July 16, 2010 1:10 PM
To: full-disclosure () lists grok org uk
Subject: [Full-disclosure] Expired certificate

OK, I am in the Golden state (California) where things are not so golden
at the moment.
I deal with a state agency and use their "secure" ftp site.
Their certificate has expired and won't be renewed for a few weeks, but
they want me to continue to ftp stuff
Using their expired cert.

So, as a relative n00b,  what are the risks?

Does it still encrypt even though, obviously, it can't be verified?

My guess is that this still encrypts, but there is no authentication,
possibly creating a man in the middle opportunity for some
Nefarious person with evil intent (nobody I know, or who is on this
list, of course).


Anyway, any info would be welcome from the cognoscenti who subscribe
here.

Thanks,
Dan Sichel

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_______________________________________________
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