Frontier is Substrate's Ethereum compatibility layer. In the newly introduced signed Frontier-specific extrinsic for `pallet-ethereum`, a large part of transaction validation logic was only called in transaction pool validation, but not in block execution. Malicious validators can take advantage of this to put invalid transactions into a block. The attack is limited in that the signature is always validated, and the majority of the validation is done again in the subsequent `pallet-evm` execution logic. However, do note that a chain ID replay attack was possible. In addition, spamming attacks are of main concerns, while they are limited by Substrate block size limits and other factors. The issue is patched in commit `146bb48849e5393004be5c88beefe76fdf009aba`.
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Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2021-10-13T15:15:11
Updated: 2024-08-04T02:59:31.757Z
Reserved: 2021-09-15T00:00:00
Link: CVE-2021-41138
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-10-13T16:15:07.847
Modified: 2024-11-21T06:25:34.130
Link: CVE-2021-41138
Redhat
No data.