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Date: Wed, 15 Feb 2017 20:05:42 +0000 (UTC)
From: "John Zhuge (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Message-ID: <JIRA.13043332.1487183111000.90823.1487189142009@Atlassian.JIRA>
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Subject: [jira] [Updated] (HADOOP-14083) KMS should support old SSL clients
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archived-at: Wed, 15 Feb 2017 20:05:49 -0000


     [ https://issues.apache.org/jira/browse/HADOOP-14083?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

John Zhuge updated HADOOP-14083:
--------------------------------
    Attachment: HADOOP-14083.branch-2.001.patch

Patch branch-2.001
* Add env KMS_SSL_CIPHERS, default to a list of selected ciphers
* Configure Tomcat to accept a list of ciphers

TODO
* Discuss Allen's idea of strong security by default

Testing done
* hadoop-kms unit tests
* Verify KMS_SSL_CIPHERS value on stdout during kms startup
* Run https://github.com/jzhuge/hadoop-bats-tests/blob/master/kms.bats in insecure, SSL, and SSL+Kerberos single node setup
* Sslcan result should include only listed ciphers
* On Centos 6.6, run the following curl command. Expect {{NSS error -12286}} without the fix.
{noformat}
curl -v -k [--negotiate] -u: -sS 'https:/<kms_host>:16000/kms/v1/keys/names'
{noformat}

> KMS should support old SSL clients
> ----------------------------------
>
>                 Key: HADOOP-14083
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14083
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: kms
>    Affects Versions: 2.8.0, 2.7.4, 2.6.6
>            Reporter: John Zhuge
>            Assignee: John Zhuge
>            Priority: Minor
>         Attachments: HADOOP-14083.branch-2.001.patch
>
>
> HADOOP-13812 upgraded Tomcat to 6.0.48 which filters weak ciphers. Old SSL clients such as curl stop working. The symptom is {{NSS error -12286}} when running {{curl -v}}.
> Instead of forcing the SSL clients to upgrade, we can configure Tomcat to explicitly allow enough weak ciphers so that old SSL clients can work.


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