limit the buffer_size

Exiv2 · Dec 13, 2022 · 1d8e204 · 1d8e204
1 parent 09b28cb
commit 1d8e204
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/riffvideo.cpp b/src/riffvideo.cpp
@@ -506,13 +506,18 @@ void RiffVideo::printStructure(std::ostream& out, PrintStructureOption option, s
           << std::endl;
     }
 
+    const uint64_t bufMaxSize = 200;
     io_->seek(0, BasicIo::beg);  // rewind
     while (!io_->eof() && (uint64_t)io_->tell() < filesize) {
       uint64_t offset = (uint64_t)io_->tell();
       byte size_buff[RIFF_TAG_SIZE];
       io_->read(chunkId.data(), RIFF_TAG_SIZE);
       io_->read(size_buff, RIFF_TAG_SIZE);
       uint32_t size = Exiv2::getULong(size_buff, littleEndian);
+      if (size > bufMaxSize) {
+        io_->seek(size, BasicIo::cur);
+        continue;
+      }
       DataBuf payload(offset ? size : RIFF_TAG_SIZE);  // header is different from chunks
       io_->read(payload.data(), payload.size());