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https://issues.apache.org/jira/browse/SPARK-18664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15711294#comment-15711294
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Sean Owen commented on SPARK-18664:
-----------------------------------

What is the attack vector for OPTIONS? I don't see that as a security risk. At 
the same time I can't think of a reason anyone would need to call it.

> Don't respond to HTTP OPTIONS in HTTP-based UIs
> -----------------------------------------------
>
>                 Key: SPARK-18664
>                 URL: https://issues.apache.org/jira/browse/SPARK-18664
>             Project: Spark
>          Issue Type: Improvement
>          Components: Web UI
>            Reporter: meiyoula
>            Priority: Minor
>
> This was flagged a while ago during a routine security scan(AWVS): the 
> HTTP-based Spark services respond to an HTTP OPTIONS command.
> HTTP OPTIONS method is enabled on this web server. The OPTIONS method 
> provides a list of the methods that are supported by the web server, it 
> represents a request for information about the communication options 
> available on the request/response chain identified by the Request-URI.
> The OPTIONS method may expose sensitive information that may help an 
> malicious user to prepare more advanced attacks.



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