Re: Slightly improved SSL bits...

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Sean Chittenden <sean(at)chittenden(dot)org>
Cc: pgsql-patches(at)postgresql(dot)org
Subject: Re: Slightly improved SSL bits...
Date: 2003-06-11 15:06:01
Message-ID: 200306111506.h5BF61A23753@candle.pha.pa.us
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Patch applied. Thanks.

---------------------------------------------------------------------------

Sean Chittenden wrote:
> Well, the discussion about SSL a bit back perked my interest and I did
> some reading on the subject.
>
> 1) PostgreSQL uses ephemeral keying, for its connections (good thing)
>
> 2) PostgreSQL doesn't set the cipher list that it allows (bad thing,
> fixed)
>
> 3) PostgreSQL's renegotiation code wasn't text book correct (could be
> bad, fixed)
>
> 4) The rate of renegotiating was insanely low (as Tom pointed out, set
> to a more reasonable level)
>
> I haven't checked around much to see if there are any other SSL bits
> that need some review, but I'm doing some OpenSSL work right now
> and'll send patches for improvements along the way (if I find them).
> At the very least, the changes in this patch will make security folks
> happier for sure. The constant renegotiation of sessions was likely a
> boon to systems that had bad entropy gathering means (read: Slowaris
> /dev/rand|/dev/urand != ANDIrand). The new limit for renegotiations
> is 512MB which should be much more reasonable.
>
> -sc
>
> --
> Sean Chittenden

[ Attachment, skipping... ]

>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster

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Bruce Momjian | http://candle.pha.pa.us
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