| Package | Affected versions | Patched versions |
|---|---|---|
| org.ethereum:ethereumj-core | ≤ 1.12.0 | |
| ethereumj | = 1.8.2 |
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.
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