CVE-2022-31111

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.

CVSS v3 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:P/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/paritytech/frontier/commit/e3e427fa2e5d1200a784679f8015d4774cedc934	Patch Third Party Advisory
https://github.com/paritytech/frontier/commit/fed5e0a9577c10bea021721e8c2c5c378e16bf66	Patch Third Party Advisory
https://github.com/paritytech/frontier/pull/753	Issue Tracking Patch Third Party Advisory
https://github.com/paritytech/frontier/security/advisories/GHSA-hc8w-mx86-9fcj	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:parity:frontier:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2022-07-06 18:15

Updated : 2022-07-14 14:18

NVD link : CVE-2022-31111

Mitre link : CVE-2022-31111

CVE.ORG link : CVE-2022-31111

JSON object : View

Products Affected

parity

frontier

CWE

CWE-670

Always-Incorrect Control Flow Implementation

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