[jira] [Created] (HBASE-27436) Remove protobuf 2 dependencies

["Andrew Kyle Purtell (Jira)" <ji...@apache.org>]

Andrew Kyle Purtell created HBASE-27436:
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             Summary: Remove protobuf 2 dependencies
                 Key: HBASE-27436
                 URL: https://issues.apache.org/jira/browse/HBASE-27436
             Project: HBase
          Issue Type: Bug
            Reporter: Andrew Kyle Purtell


Protobuf 2 is subject to CVE-2015-5237, CVE-2021-22569, CVE-2022-3171 and scanners checking compliance with zero tolerance CVE policies will hit on HBase because a dependency on com.google.protobuf:protobuf-java:2.5.0 is still exported by 2.x versions. 

It is impossible to remove that dependency given our compatibility guidelines but nonetheless it is a problem for downstream consumers of HBase with such security policies. 

HBase 2 uses Protobuf 3 internally for RPC, in hbase-protocol-shaded.

We still depend on some protobuf-java v2.5 classes because we use the Protobuf 2 compiler to compile the IDL in the backwards compatible hbase-protocol module. Perhaps we can extract and produce a scaffold from protobuf-java v2.5, just enough so the generated classes from the IDL will compile, and ship that scaffold included, so the dependency on protobuf-java 2.5 proper can be dropped. Protobuf is MIT licensed so partial appropriation of the source would be allowable. 



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