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https://issues.apache.org/jira/browse/SPARK-23983?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-23983.
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Resolution: Incomplete
> Disable X-Frame-Options from Spark UI response headers if explicitly
> configured
> -------------------------------------------------------------------------------
>
> Key: SPARK-23983
> URL: https://issues.apache.org/jira/browse/SPARK-23983
> Project: Spark
> Issue Type: Improvement
> Components: Web UI
> Affects Versions: 2.3.0
> Reporter: Taylor Cressy
> Priority: Minor
> Labels: UI, bulk-closed
>
> We should introduce a configuration for the spark UI to omit X-Frame-Options
> from the response headers if explicitly set.
> The X-Frame-Options header was introduced in *org.apache.spark.ui.JettyUtils*
> to prevent frame-related click-jacking vulnerabilities. This was addressed
> in: SPARK-10589
>
> {code:java}
> val allowFramingFrom = conf.getOption("spark.ui.allowFramingFrom")
> val xFrameOptionsValue =
> allowFramingFrom.map(uri => s"ALLOW-FROM $uri").getOrElse("SAMEORIGIN")
> ...
> // In doGet
> response.setHeader("X-Frame-Options", xFrameOptionsValue)
> {code}
>
> The problem with this, is that we only allow the same origin or a singular
> host to present the UI with iframes. I propose we add a configuration that
> turns this off.
>
> Use Case: Currently building a "portal UI" for all things related to a
> cluster. Embedding the spark UI in the portal is necessary because the
> cluster is in the cloud and can only be accessed via an SSH tunnel - as
> intended. (The reverse proxy configuration {{*_spark.ui.reverseProxy_* could
> be used to simplify connecting to all the workers}}, but this doesn't solve
> handling multiple, unrelated, UIs through a single tunnel.
>
> Moreover, the host that our "portal UI" would reside on is not assigned a
> hostname and has an ephemeral IP address, so the *ALLOW-FROM* directive isn't
> useful in this case.
>
> Lastly, the current design does not allow for different hosts to be
> configured, i.e. *_spark.ui.allowFramingFrom_* _*hostname1,hostname2*_ is not
> a valid config.
>
> An alternative option would be to explore Content-Security-Policy:
> [https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy#frame-ancestors]
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