CVE-2023-34458 mx-chain-go's relayed transactions always increment nonce
Attackers can cause a limited denial of service on targeted accounts by exploiting a nonce increment bug in relayed transactions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-34458?
CVE-2023-34458 is a high-severity denial of service vulnerability in multiversx mx-chain-go, published on 13 Jul 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
mx-chain-go is the official implementation of the MultiversX blockchain protocol, written in golang. When executing a relayed transaction, if the inner transaction failed, it would have increased the inner transaction's sender account nonce. This could have contributed to a limited DoS attack on a targeted account. The fix is a breaking change so a new flag `RelayedNonceFixEnableEpoch` was needed. This was a strict processing issue while validating blocks on a chain. This vulnerability has been patched in version 1.4.17.
Weakness: CWE-400
Which versions are affected by CVE-2023-34458?
3 open source packages ship an affected version, including github.com/multiversx/mx-chain-go. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/multiversx/mx-chain-go Go | All versions | 1.4.17 |
github.com/multiversx/mx-chain-go Go | All versions | 1.4.17 |
github.com/multiversx/mx-chain-go Go | All versions | 1.4.17 |
Products include Multiversx Mx-Chain-Go.
How do I fix CVE-2023-34458?
Upgrade github.com/multiversx/mx-chain-go to 1.4.17 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-34458 being exploited?
There is no known exploitation of CVE-2023-34458 in the wild and no public exploit code.
Other vulnerabilities in multiversx mx-chain-go
Sources
Also known as GHSA-j494-7x2v-vvvp, GO-2023-1912.