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https://issues.apache.org/jira/browse/KAFKA-5062?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16052443#comment-16052443
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ASF GitHub Bot commented on KAFKA-5062:
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GitHub user cmccabe opened a pull request:
https://github.com/apache/kafka/pull/3359
KAFKA-5062. Kafka brokers can accept malformed requests which allocat…
…e gigabytes of memory
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cmccabe/kafka KAFKA-5062
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/3359.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3359
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commit 503cfc9ae5f444a46e28b2b5eac6d31b4628134a
Author: Colin P. Mccabe <cmcc...@confluent.io>
Date: 2017-06-14T16:52:08Z
KAFKA-5062. Kafka brokers can accept malformed requests which allocate
gigabytes of memory
----
> Kafka brokers can accept malformed requests which allocate gigabytes of memory
> ------------------------------------------------------------------------------
>
> Key: KAFKA-5062
> URL: https://issues.apache.org/jira/browse/KAFKA-5062
> Project: Kafka
> Issue Type: Bug
> Reporter: Apurva Mehta
> Assignee: Colin P. McCabe
>
> In some circumstances, it is possible to cause a Kafka broker to allocate
> massive amounts of memory by writing malformed bytes to the brokers port.
> In investigating an issue, we saw byte arrays on the kafka heap upto 1.8
> gigabytes, the first 360 bytes of which were non kafka requests -- an
> application was writing the wrong data to kafka, causing the broker to
> interpret the request size as 1.8GB and then allocate that amount. Apart from
> the first 360 bytes, the rest of the 1.8GB byte array was null.
> We have a socket.request.max.bytes set at 100MB to protect against this kind
> of thing, but somehow that limit is not always respected. We need to
> investigate why and fix it.
> cc [~rnpridgeon], [~ijuma], [~gwenshap], [~cmccabe]
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