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.
{
"nvd_published_at": "2024-07-21T10:15:04Z",
"severity": "HIGH",
"github_reviewed_at": "2024-07-22T14:42:24Z",
"github_reviewed": true,
"cwe_ids": [
"CWE-502"
]
}