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From "Vijay Singh (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12668) Modify HDFS embeded jetty server logic in HttpServer2.java to exclude weak Ciphers through ssl-server.conf
Date Wed, 13 Jan 2016 23:39:39 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15097290#comment-15097290

Vijay Singh commented on HADOOP-12668:

Hi [~wheat9],
I also want to mention that HttpFs is war project that can utilize ssl-server.xml for tomcat.
However, these hadoop common services (namenode, seocndary namenode, qjm, yarn rm) are jar
modules and are based on embedded jetty implementation (documentation maintained at link [LikeJettyXml|http://git.eclipse.org/c/jetty/org.eclipse.jetty.project.git/tree/examples/embedded/src/main/java/org/eclipse/jetty/embedded/LikeJettyXml.java]
). Currently, programmatic setting is the only option I am aware of and also also I am just
leveraging the current implementation, while still utilizing current ssl-server.xml config
file to maintain the configuration based flexibility. I am looking for suggestions if there
is an alternate approach. I will continue to extend the functionality to include CipherSuites
as well.

> Modify HDFS embeded jetty server logic in HttpServer2.java to exclude weak Ciphers through
> ----------------------------------------------------------------------------------------------------------
>                 Key: HADOOP-12668
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12668
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 2.7.1
>            Reporter: Vijay Singh
>            Assignee: Vijay Singh
>            Priority: Critical
>              Labels: common, ha, hadoop, hdfs, security
>         Attachments: Hadoop-12668.006.patch
>   Original Estimate: 24h
>  Remaining Estimate: 24h
> Currently Embeded jetty Server used across all hadoop services is configured through
ssl-server.xml file from their respective configuration section. However, the SSL/TLS protocol
being used for this jetty servers can be downgraded to weak cipher suites. This code changes
aims to add following functionality:
> 1) Add logic in hadoop common (HttpServer2.java and associated interfaces) to spawn jetty
servers with ability to exclude weak cipher suites. I propose we make this though ssl-server.xml
and hence each service can choose to disable specific ciphers.
> 2) Modify DFSUtil.java used by HDFS code to supply new parameter ssl.server.exclude.cipher.list
for hadoop-common code, so it can exclude the ciphers supplied through this key.

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