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Posted to commits@cassandra.apache.org by "Berenguer Blasi (Jira)" <ji...@apache.org> on 2020/04/20 11:39:00 UTC

[jira] [Commented] (CASSANDRA-15560) Change io.compressor.LZ4Compressor to LZ4SafeDecompressor

    [ https://issues.apache.org/jira/browse/CASSANDRA-15560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17087627#comment-17087627 ] 

Berenguer Blasi commented on CASSANDRA-15560:
---------------------------------------------

[~jrwest]do you mind I take this one?

> Change io.compressor.LZ4Compressor to LZ4SafeDecompressor
> ---------------------------------------------------------
>
>                 Key: CASSANDRA-15560
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15560
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Feature/Compression
>            Reporter: Jordan West
>            Assignee: Jordan West
>            Priority: Normal
>             Fix For: 4.0, 4.0-rc
>
>
> CASSANDRA-15556 and related tickets showed that LZ4FastDecompressor can crash the JVM and that LZ4SafeDecompressor performs better w/o the crash risk — its also not deprecated. While we protect ourselves by checksumming the compressed data but that doesn’t mean we should leave deprecated code that can segfault the jvm (providing a potential DDOS vector among other things) in crucial places like io.compress. 



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