CVE-2022-39242

2022-09-2402:15:09

CWE-682

[email protected]

web.nvd.nist.gov

cve

2022

39242

frontier

ethereum

substrate

block spamming

attack

gas refunds

security

vulnerability

nvd

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

0.001 Low

EPSS

Percentile

39.3%

JSON

Frontier is an Ethereum compatibility layer for Substrate. Prior to commit d3beddc6911a559a3ecc9b3f08e153dbe37a8658, the worst case weight was always accounted as the block weight for all cases. In case of large EVM gas refunds, this can lead to block spamming attacks – the adversary can construct blocks with transactions that have large amount of refunds or unused gases with reverts, and as a result inflate up the chain gas prices. The impact of this issue is limited in that the spamming attack would still be costly for any adversary, and it has no ability to alter any chain state. This issue has been patched in commit d3beddc6911a559a3ecc9b3f08e153dbe37a8658. There are no known workarounds.

Affected configurations

NVD

Node

parityfrontierRange<2022-09-12

CPENameOperatorVersion
parity:frontierparity frontierlt2022-09-12

CPE	Name	Operator	Version
parity:frontier	parity frontier	lt	2022-09-12

CNA Affected

[
  {
    "product": "frontier",
    "vendor": "paritytech",
    "versions": [
      {
        "status": "affected",
        "version": "< commit d3beddc6911a559a3ecc9b3f08e153dbe37a8658"
      }
    ]
  }
]