CVE-2024-39696 Evmos vulnerable to exploit of smart contract account and vesting

What is CVE-2024-39696?

CVE-2024-39696 is a high-severity vulnerability in evmos, published on 5 Jul 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Evmos is a decentralized Ethereum Virtual Machine chain on the Cosmos Network. Prior to version 19.0.0, a user can create a vesting account with a 3rd party account (EOA or contract) as funder. Then, this user can create an authorization for the contract.CallerAddress, this is the authorization checked in the code. But the funds are taken from the funder address provided in the message. Consequently, the user can fund a vesting account with a 3rd party account without its permission. The funder address can be any address, so this vulnerability can be used to drain all the accounts in the chain. The issue has been patched in version 19.0.0.

Weakness: CWE-863

Which versions are affected by CVE-2024-39696?

21 open source packages ship an affected version, including github.com/evmos/evmos/v18, github.com/evmos/evmos and github.com/evmos/evmos/v10. It affects 1 product.

Products include Evmos Evmos.

How do I fix CVE-2024-39696?

Upgrade github.com/evmos/evmos/v18 to 19.0.0 or later.

Is CVE-2024-39696 being exploited?

There is no known exploitation of CVE-2024-39696 in the wild and no public exploit code.

Other vulnerabilities in evmos

• CVE-2024-32644 Evmos' transaction execution not accounting for all state transition after interaction with precompiles Critical 9.1
• CVE-2022-24738 Account compromise in Evmos High 8.1
• CVE-2024-37153 Evmos's contract balance not updating correctly after interchain transaction High 7.5
• CVE-2024-37154 Evmos allows unvested token delegations Medium 5.3
• CVE-2024-37158 Evmos is missing precompile checks Low 3.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-q6hg-6m9x-5g9c, GO-2024-2974.