Description
An issue was discovered in EthereumJ 1.8.2. There is Unsafe Deserialization in ois.readObject in mine/Ethash.java and decoder.readObject in crypto/ECKey.java. When a node syncs and mines a new block, arbitrary OS commands can be run on the server.
Remediation
References
https://github.com/ethereum/ethereumj
https://github.com/ethereum/ethereumj/issues/1161
https://github.com/frohoff/ysoserial/
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