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Date: Tue, 14 Jul 2015 17:58:19 -0700
From: Anthony Liguori <>
To: Kurt Seifried <>,,
        Assign a CVE Identifier <>,
        Colm MacCarthaigh <>
Subject: Re: CVE Request: AWS s2n

Kurt Seifried <> writes:

> On 07/14/2015 04:03 PM, Markus Vervier wrote:
>> On 14.07.2015 17:48, Kurt Seifried wrote:
>>> Reminder: Client mode is disabled and won't be enabled until X509 validation is ready. But we
>> can still make improvements and fixes in the meantime.
>>> so I'm not sure this needs a CVE as the code is not yet enabled.
>> Hi Kurt,
>> that is a valid point from you and not for me to decide.
>> Yet with default settings a binary is compiled (bin/s2nc) which will
>> work in client mode when environment variable S2N_ENABLE_CLIENT_MODE=1
>> is set (as documented). So it is possible several people were tempted to
>> use s2n in client mode already as the client mode code is actually
>> compiled into the lib and useable by default.
>> I guess it depends on your definition of "enabled".
>> Markus
> Ah, I didn't know that, Mitre I'm leaving this one up to you (way to
> much of a gray area for me to even poke with a stick).

Adding Colm from s2n upstream in case he would like to comment here.


Anthony Liguori

> -- 
> Kurt Seifried -- Red Hat -- Product Security -- Cloud
> PGP A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993
> Red Hat Product Security contact:

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