🛡️ CVE-2022-31111
🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-670 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Frontier is Substrate's Ethereum compatibility layer. In affected versions the truncation done when converting between EVM balance type and Substrate balance type was incorrectly implemented. This leads to possible discrepancy between appeared EVM transfer value and actual Substrate value transferred. It is recommended that an emergency upgrade to be planned and EVM execution temporarily paused in the mean time. The issue is patched in Frontier master branch commit fed5e0a9577c10bea021721e8c2c5c378e16bf66 and polkadot-v0.9.22 branch commit e3e427fa2e5d1200a784679f8015d4774cedc934. This vulnerability affects only EVM internal states, but not Substrate balance states or node. You can temporarily pause EVM execution (by setting up a Substrate `CallFilter` that disables `pallet-evm` and `pallet-ethereum` calls before the patch can be applied.

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE CWE-670
Public Exploit ✅ No
Source NVD
Published 2022-07-06
Updated 2026-06-08
Modified 2024-11-21

Affected Packages

Software From version Fixed in
frontier — —

References

Issue Tracking, Patch, Third Party Advisory https://github.com/paritytech/frontier/pull/753
Issue Tracking, Patch, Third Party Advisory https://github.com/paritytech/frontier/pull/753

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