The H2O machine learning platform uses "Iced" classes as the primary means of moving Java Objects around the cluster. The Iced format supports inclusion of serialized Java objects. When a model is deserialized, any class is allowed to be deserialized (no class whitelist). An attacker can construct a crafted Iced model that uses Java gadgets and leads to arbitrary code execution when imported to the H2O platform.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| ai.h2o:h2o-core(Maven) | 0 | N/A | N/A |
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