Quanlong Huang created ORC-403:
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Summary: Should check PostScript length before serializing it
Key: ORC-403
URL: https://issues.apache.org/jira/browse/ORC-403
Project: ORC
Issue Type: Bug
Components: C++
Reporter: Quanlong Huang
Assignee: Quanlong Huang
A malformed ORC file may have a postscript length larger than the file size,
which causes orc:: readPostscript to read unexpected data.
{code}
std::unique_ptr<proto::PostScript> postscript =
std::unique_ptr<proto::PostScript>(new proto::PostScript());
if (!postscript->ParseFromArray(ptr + readSize - 1 - postscriptSize,
static_cast<int>(postscriptSize))) {
throw ParseError("Failed to parse the postscript from " +
stream->getName());
}
{code}
We should make sure readSize - 1 - postscriptSize >= 0.
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