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.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2024-04-19T14:53:44.423Z

Updated: 2024-08-02T02:13:40.251Z

Reserved: 2024-04-16T14:15:26.874Z

Link: CVE-2024-32644

cve-icon Vulnrichment

Updated: 2024-05-14T17:15:39.255Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-04-19T15:15:50.960

Modified: 2024-04-19T16:19:49.043

Link: CVE-2024-32644

cve-icon Redhat

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