CVE-2021-39193Medium· 5.3▾ SunlitTransaction validity oversight in pallet-ethereum
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.2 · likelihood 0.2 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 9.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
1.2%
A bug in pallet-ethereum can cause invalid transactions to be included in the Ethereum block state in pallet-ethereum due to not validating the input data size. Any invalid transactions included this way have no possibility to alter the internal Ethereum or Substrate state. The transaction will appear to have be included, but is of no effect as it is rejected by the EVM engine. The impact is further limited by Substrate extrinsic size constraints.
Patches are applied in PR #465.
None.
Patch PR: https://github.com/paritytech/frontier/pull/465
If you have any questions or comments about this advisory:
pallet-ethereum <= 3.0.0Refer to the advisory for the patched release.
Connected by shared product, vendor, weakness, or advisory.