CVE-2021-39193
Description
Frontier is Substrate's Ethereum compatibility layer. Prior to commit number 0b962f218f0cdd796dadfe26c3f09e68f7861b26, 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. A patch is available in commit number 0b962f218f0cdd796dadfe26c3f09e68f7861b26. There are no workarounds aside from applying the patch.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
pallet-ethereumcrates.io | <= 3.0.0 | — |
Affected products
3< 0b962f218f0cdd796dadfe26c3f09e68f7861b26+ 1 more
- (no CPE)range: < 0b962f218f0cdd796dadfe26c3f09e68f7861b26
- cpe:2.3:a:parity:frontier:*:*:*:*:*:*:*:*range: <2021-09-03
Patches
Vulnerability mechanics
References
7- github.com/paritytech/frontier/commit/0b962f218f0cdd796dadfe26c3f09e68f7861b26nvdPatchThird Party AdvisoryWEB
- github.com/paritytech/frontier/pull/465nvdPatchThird Party AdvisoryWEB
- github.com/paritytech/frontier/pull/465/commits/8a2b890a2fb477d5fedd0e4335b00623832849aenvdPatchThird Party AdvisoryWEB
- github.com/paritytech/frontier/security/advisories/GHSA-hw4v-5x4h-c3xmnvdPatchThird Party AdvisoryWEB
- github.com/advisories/GHSA-hw4v-5x4h-c3xmghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-39193ghsaADVISORY
- github.com/paritytech/frontier/commit/dd112eghsaWEB
News mentions
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