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MitreCVE-2021-42765

HistoryOct 20, 2021 - 8:15 p.m.

CVE-2021-42765

2021-10-2020:15:07

mitre

web.nvd.nist.gov

cve-2021-42765

ethereum

pos

consensus protocol

network delay

denial of service

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

42.7%

JSON

The Proof-of-Stake (PoS) Ethereum consensus protocol through 2021-10-19 allows an adversary to leverage network delay to cause a denial of service (indefinite stalling of consensus decisions).

Affected configurations

Nvd

Node

proof-of-stake_ethereum_projectproof-of-stake_ethereumRange≤2021-10-19

VendorProductVersionCPE
proof-of-stake_ethereum_projectproof-of-stake_ethereum*cpe:2.3:a:proof-of-stake_ethereum_project:proof-of-stake_ethereum:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
proof-of-stake_ethereum_project	proof-of-stake_ethereum	*	cpe:2.3:a:proof-of-stake_ethereum_project:proof-of-stake_ethereum::::::::

References

arxiv.org/abs/2110.10086

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

42.7%

JSON

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