CVE-2023-34458 — mx-chain-go is the official implementation of the MultiversX blockchain protocol

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

01What is this vulnerability?

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…

02Affected products

Vendor	Product	Versions
multiversx	mx	chain-go — < 1.4.17

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-07-13T18:45:03.499Z
• Last modified: 2024-10-22T16:08:19.599Z

09References

• github.com — https://github.com/multiversx/mx-chain-go/security/advisories/GHSA-j494-7x2v-vvv…
• github.com — https://github.com/multiversx/mx-chain-go/commit/babdb144f1316ab6176bf3dbd7d4621…
• github.com — https://github.com/multiversx/mx-chain-go/blob/babdb144f1316ab6176bf3dbd7d462112…
• github.com — https://github.com/multiversx/mx-chain-go/releases/tag/v1.4.17