CVE-2022-31111

 

Published at: - 06-07-2022 08:15

Last modified: - 14-07-2022 04:18

Total changes: - 2

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

 

Verification logic

 

Reference

• https://github.com/paritytech/frontier/pull/753
• https://github.com/paritytech/frontier/security/advisories/GHSA-hc8w-mx86-9fcj
• https://github.com/paritytech/frontier/commit/e3e427fa2e5d1200a784679f8015d4774cedc934
• https://github.com/paritytech/frontier/commit/fed5e0a9577c10bea021721e8c2c5c378e16bf66

 

Keywords

NVD

 

CVE-2022-31111

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures