Jens Geyer created THRIFT-6032:
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Summary: Harden OCaml protocol negative sizes
Key: THRIFT-6032
URL: https://issues.apache.org/jira/browse/THRIFT-6032
Project: Thrift
Issue Type: Bug
Components: OCaml - Library
Reporter: Jens Geyer
The OCaml library does not validate negative sizes when reading Thrift payloads.
Size values appear in binary/string fields and in map/list/set headers. Those
values must be non-negative. In {{TBinaryProtocol.ml}}, the {{readString}},
{{readMapBegin}}, {{readListBegin}}, and {{readSetBegin}} methods read a size
via {{readI32}} and use it without any negative check.
This is a protocol hardening gap compared with other runtimes such as C++,
Java, Python, Go, and Node.js, which all raise a NEGATIVE_SIZE exception.
The fix should add negative-size checks that raise a TProtocolException in all
container and string/binary read paths.
See THRIFT-6025 for the equivalent Ruby fix.
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