CVE-2023-33964: mx-chain-go does not treat invalid transaction with wrong username correctly
Impact Metachain cannot process a cross-shard miniblock. An invalid transaction with the wrong username on metachain is not treated correctly on the metachain transaction processor. This is strictly a processing issue that could have happened on MultiversX chain. If an error like this had occurred, the metachain would have stopped notarizing blocks from the shard chains. The resuming of notarization is possible only after applying a patched binary version. Patches Introduce processIfTxErrorCrossShard for metachain transaction processor.
Workarounds No
References No
Other sources
mx-chain-go is an implementation of the MultiversX blockchain protocol written in the Go language. Metachain cannot process a cross-shard miniblock. Prior to version 1.4.16, an invalid transaction with the wrong username on metachain is not treated correctly on the metachain transaction processor. This is strictly a processing issue that could have happened on MultiversX chain. If an error like this had occurred, the metachain would have stopped notarizing blocks from the shard chains. The resuming of notarization is possible only after applying a patched binary version. A patch in version 1.4.16 introduces processIfTxErrorCrossShard for the metachain transaction processor. There are no known workarounds for this issue.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
go/github.com/multiversx/mx-chain-goto a version that resolves this vulnerability.Fixed in 1.4.16 - Upgrade
Upgrade
mx-chain-goto a version that resolves this vulnerability.Fixed in 1.4.16 - Compensating control
If the notarization has stopped due to an invalid metachain transaction with the wrong username (cross-shard error case), resume notarization only after applying the patched binary version.
Event History
Frequently Asked Questions
What is the severity of CVE-2023-33964?
The severity of CVE-2023-33964 is not explicitly classified, but it is related to a processing issue on the Metachain.
How do I fix CVE-2023-33964?
To fix CVE-2023-33964, update the affected MultiversX Mx-chain-go package to version 1.4.16 or later.
What are the potential consequences of CVE-2023-33964?
CVE-2023-33964 could result in improper processing of cross-shard miniblocks, leading to transaction errors.
Which version of MultiversX Mx-chain-go is affected by CVE-2023-33964?
CVE-2023-33964 affects all versions of the MultiversX Mx-chain-go package prior to 1.4.16.
Is CVE-2023-33964 specific to any platform?
Yes, CVE-2023-33964 is specific to the Metachain and could impact applications running on the MultiversX chain.