Vulnerability Information
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Vulnerability Title
Evmos' transaction execution not accounting for all state transition after interaction with precompiles
Vulnerability Description
Evmos is a scalable, high-throughput Proof-of-Stake EVM blockchain that is fully compatible and interoperable with Ethereum. Prior to 17.0.0, there is a way to mint arbitrary tokens due to the possibility to have two different states not in sync during the execution of a transaction. The exploit is based on the fact that to sync the Cosmos SDK state and the EVM one, we rely on the `stateDB.Commit()` method. When we call this method, we iterate though all the `dirtyStorage` and, **if and only if** it is different than the `originStorage`, we set the new state. Setting the new state means we update the Cosmos SDK KVStore. If a contract storage state that is the same before and after a transaction, but is changed during the transaction and can call an external contract after the change, it can be exploited to make the transaction similar to non-atomic. The vulnerability is **critical** since this could lead to drain of funds through creative SC interactions. The issue has been patched in versions >=V17.0.0.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Vulnerability Type
不恰当的同步机制
Vulnerability Title
Evmos 安全漏洞
Vulnerability Description
Evmos是一个可扩展、高吞吐量的权益证明区块链。用于与以太坊完全兼容和互操作。 Evmos 17.0.0之前版本存在安全漏洞，该漏洞源于事务执行不考虑与预编译交互后的所有状态转换。
CVSS Information
N/A
Vulnerability Type
N/A