CVE-2021-39193

Frontier is Substrate's Ethereum compatibility layer. Prior to commit number 0b962f218f0cdd796dadfe26c3f09e68f7861b26, a bug in `pallet-ethereum` can cause invalid transactions to be included in the Ethereum block state in `pallet-ethereum` due to not validating the input data size. Any invalid transactions included this way have no possibility to alter the internal Ethereum or Substrate state. The transaction will appear to have be included, but is of no effect as it is rejected by the EVM engine. The impact is further limited by Substrate extrinsic size constraints. A patch is available in commit number 0b962f218f0cdd796dadfe26c3f09e68f7861b26. There are no workarounds aside from applying the patch.

CVSS v3.0 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3.0 : 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/pull/465/commits/8a2b890a2fb477d5fedd0e4335b00623832849ae	Patch Third Party Advisory
https://github.com/paritytech/frontier/pull/465	Patch Third Party Advisory
https://github.com/paritytech/frontier/security/advisories/GHSA-hw4v-5x4h-c3xm	Patch Third Party Advisory
https://github.com/paritytech/frontier/commit/0b962f218f0cdd796dadfe26c3f09e68f7861b26	Patch Third Party Advisory

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Configurations

Configuration 1 (hide)

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

Information

Published : 2021-09-03 11:15

Updated : 2021-09-10 12:26

NVD link : CVE-2021-39193

Mitre link : CVE-2021-39193

JSON object : View

CWE

CWE-20

Improper Input Validation

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Products Affected

parity

frontier

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