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https://issues.apache.org/jira/browse/KAFKA-5117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16017689#comment-16017689
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Thomas Holmes commented on KAFKA-5117:
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I had some code that seems to work but I'm not very happy with it. I'll try to
clean it up a bit and get a PR made so the approach/impact can be discussed.
One main thing I was concerned about was whether or not the connectors use
these endpoints to share task configuration. I was seeing some instability when
running my code change so I am unsure if it was related or not. I didn't get a
chance to fully diagnose the situation, though.
> Kafka Connect REST endpoints reveal Password typed values
> ---------------------------------------------------------
>
> Key: KAFKA-5117
> URL: https://issues.apache.org/jira/browse/KAFKA-5117
> Project: Kafka
> Issue Type: Bug
> Components: KafkaConnect
> Affects Versions: 0.10.2.0
> Reporter: Thomas Holmes
>
> A Kafka Connect connector can specify ConfigDef keys as type of Password.
> This type was added to prevent logging the values (instead "[hidden]" is
> logged).
> This change does not apply to the values returned by executing a GET on
> {{connectors/\{connector-name\}}} and
> {{connectors/\{connector-name\}/config}}. This creates an easily accessible
> way for an attacker who has infiltrated your network to gain access to
> potential secrets that should not be available.
> I have started on a code change that addresses this issue by parsing the
> config values through the ConfigDef for the connector and returning their
> output instead (which leads to the masking of Password typed configs as
> [hidden]).
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