CVE-2023-34458

mx-chain-go's relayed transactions always increment nonce

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.

Category

7.1
CVSS
Severity: High
CVSS 3.1 •
EPSS 1.67% Top 20%
Vendor Advisory github.com
Affected: multiversx mx-chain-go
Published at:
Updated at:

References

Link Tags
https://github.com/multiversx/mx-chain-go/security/advisories/GHSA-j494-7x2v-vvvp vendor advisory
https://github.com/multiversx/mx-chain-go/commit/babdb144f1316ab6176bf3dbd7d4621120414d43 patch
https://github.com/multiversx/mx-chain-go/blob/babdb144f1316ab6176bf3dbd7d4621120414d43/integrationTests/vm/txsFee/relayedMoveBalance_test.go#LL165C14-L165C14 product
https://github.com/multiversx/mx-chain-go/releases/tag/v1.4.17 release notes

Frequently Asked Questions

What is the severity of CVE-2023-34458?
CVE-2023-34458 has been scored as a high severity vulnerability.
How to fix CVE-2023-34458?
To fix CVE-2023-34458, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-34458 being actively exploited in the wild?
It is possible that CVE-2023-34458 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-34458?
CVE-2023-34458 affects multiversx mx-chain-go.
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