[jira] [Updated] (FLUME-3315) [KafkaSink][KafkaSource] Impossible to disable hostname verification with SSL enryption

["Jérémy LE BERRE (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLUME-3315?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jérémy LE BERRE updated FLUME-3315:
-----------------------------------
    Priority: Major  (was: Critical)

> [KafkaSink][KafkaSource] Impossible to disable hostname verification with SSL enryption
> ---------------------------------------------------------------------------------------
>
>                 Key: FLUME-3315
>                 URL: https://issues.apache.org/jira/browse/FLUME-3315
>             Project: Flume
>          Issue Type: Bug
>          Components: Configuration, Sinks+Sources
>    Affects Versions: 1.9.0
>         Environment: Flume 1.9.0
> Kafka 2.1.0
>            Reporter: Jérémy LE BERRE
>            Priority: Major
>
> The documentation says :
> {quote}Note: By default the property {{ssl.endpoint.identification.algorithm}} is not defined, so hostname verification is not performed. In order to enable hostname verification, set the following properties
> {code:java}
> a1.sources.source1.kafka.consumer.ssl.endpoint.identification.algorithm=HTTPS{code}
> {quote}
> But with Flume *1.9.0* this is not true anymore because since Kafka 2.0.0 hostname verification is enable by default.
> {quote}*+Notable changes in 2.0.0+*
>  ...
>  The default value for {{ssl.endpoint.identification.algorithm}} was changed to {{https}}, which performs hostname verification (man-in-the-middle attacks are possible otherwise). Set {{ssl.endpoint.identification.algorithm}} to an empty string to restore the previous behaviour.
> {quote}
> The problem is that it is impossible to disable hostname verification since flume does not support empty values in configuration (cf {{FlumeConfiguration.addRawProperty}})



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