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From George Stanchev <Gstanc...@serena.com>
Subject RE: [OT] Tomcat 7.0.55/Jre 7u67: SEND TLSv1 ALERT: fatal, description = bad_record_mac
Date Tue, 13 Oct 2015 20:10:39 GMT
>> It might be doable with OpenSSL s_client or something. Tough to replicate Java's behavior
with a non-Java tool, though.

I tried hard with the s_client but it can limit the protocols to one or another but it canot
mix-and-match (hello 1.2, ok we will do 1.0) like Java 8 does. Either TLSv1 or TLSv1.2 but
not both. Neither can curl which is also on top of openssl.

Today, I spent 2.5 hours with a lemming from MS getting basically nowhere. I really need an
engineer, but they give me those clueless support people that is wasting mine and their time.
If someone knows how to escalate or a forum where MS developers hang out, I would appreciate
it. The support person I got today was clueless, went over a script and any attempt to explain
a little more technical details led to total confusion and rebooting the script to beginning.
Totally frustrating. At least with Oracle I got to talk with an actual engineer...

George


-----Original Message-----
From: Christopher Schultz [mailto:chris@christopherschultz.net] 
Sent: Tuesday, October 13, 2015 2:03 PM
To: Tomcat Users List
Subject: Re: [OT] Tomcat 7.0.55/Jre 7u67: SEND TLSv1 ALERT: fatal, description = bad_record_mac

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George,

On 10/13/15 12:35 PM, George Stanchev wrote:
> [1] states: " JDK 7-9 enables SSLv2Hello on the server side only. 
> (Will not send, but will accept SSLv2Hellos)"

Interesting. This absolutely makes sense, though, since SSL should just die. :)

> I've opened support case both MS and already there is a bug filed with 
> Oracle on this and really, to be absolutely certain if the issue is in 
> Java or SChannel, one would have to write a non-Java client that that 
> mimics the handshake messages send from Java with something like 
> OpenSSL or NSS or whatever and see if the bug replicates.

It might be doable with OpenSSL s_client or something. Tough to replicate Java's behavior
with a non-Java tool, though.

> Writing a Java/Java server client could still leave some doubts as one 
> can argue the code reuse could mask the problem - it works but the bug 
> on the client side is hidden by the server containing similar/same bug 
> so the MACs check out...
> 
> Unfortunately I don't have the time to invest in this more than I 
> already had. And if MS support engineers can pass it on to someone 
> from the windows core team may be we can have some movement forward.

Okay. Thanks for your work so far.

- -chris
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