The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream. An attacker could send a large ZlibEncoded byte stream to the Netty server, forcing the server to allocate all of its free memory to a single decoder.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| io.netty:netty-handler(Maven) | 4.1.0 | 4.1.46 | N/A |
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