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From "Lars Francke (JIRA)" <>
Subject [jira] [Commented] (AMBARI-20545) Remove the use of legacy SSL and TLS protocol versions
Date Mon, 22 Jan 2018 10:14:00 GMT


Lars Francke commented on AMBARI-20545:

[~rlevas] What's the status here? Will you have time to work on it? If not I could put it
on my list and try to get a patch done.

> Remove the use of legacy SSL and TLS protocol versions
> ------------------------------------------------------
>                 Key: AMBARI-20545
>                 URL:
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server, security
>    Affects Versions: 2.4.2
>            Reporter: Andy LoPresto
>            Assignee: Robert Levas
>            Priority: Major
>              Labels: security, ssl, tls
>             Fix For: trunk
> I notice that the explicit enabling of various protocols still includes SSLv2Hello and
SSLv3, which are severely broken protocols with numerous known vulnerabilities and not necessary
for legacy compatibility. Even TLSv1 and TLSv1.1 have been [discouraged since February 2014|],
when all modern browsers supported TLSv1.2. Is there any reason Ambari still needs to enable
support for these legacy protocols, and are there any other mitigating controls put in place
to prevent downgrade, brute force, padding oracle, and weak parameter attacks against these
protocols? Thanks. 

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