CVE-2021-41138

Frontier is Substrate's Ethereum compatibility layer. In the newly introduced signed Frontier-specific extrinsic for `pallet-ethereum`, a large part of transaction validation logic was only called in transaction pool validation, but not in block execution. Malicious validators can take advantage of this to put invalid transactions into a block. The attack is limited in that the signature is always validated, and the majority of the validation is done again in the subsequent `pallet-evm` execution logic. However, do note that a chain ID replay attack was possible. In addition, spamming attacks are of main concerns, while they are limited by Substrate block size limits and other factors. The issue is patched in commit `146bb48849e5393004be5c88beefe76fdf009aba`.

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/146bb48849e5393004be5c88beefe76fdf009aba	Patch Third Party Advisory
https://github.com/paritytech/frontier/pull/497	Patch Third Party Advisory
https://github.com/paritytech/frontier/security/advisories/GHSA-vj62-g63v-f8mf	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2021-10-13 16:15

Updated : 2024-02-28 18:48

NVD link : CVE-2021-41138

Mitre link : CVE-2021-41138

CVE.ORG link : CVE-2021-41138

JSON object : View

Products Affected

parity

frontier

CWE

CWE-20

Improper Input Validation

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