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cveMitreCVE-2021-42766
HistoryOct 20, 2021 - 8:15 p.m.

CVE-2021-42766

2021-10-2020:15:07
mitre
web.nvd.nist.gov
36
cve-2021-42766
ethereum
pos
consensus protocol
denial of service
nvd

CVSS2

6.4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

9.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.8

Confidence

High

EPSS

0.001

Percentile

42.7%

JSON

The Proof-of-Stake (PoS) Ethereum consensus protocol through 2021-10-19 allows an adversary to cause a denial of service (long-range consensus chain reorganizations), even when this adversary has little stake and cannot influence network message propagation. This can cause a protocol stall, or an increase in the profits of individual validators.

Affected configurations

Nvd
Node
proof-of-stake_ethereum_projectproof-of-stake_ethereumRange≤2021-10-19
VendorProductVersionCPE
proof-of-stake_ethereum_projectproof-of-stake_ethereumcpe:/a:proof-of-stake_ethereum_project:proof-of-stake_ethereum::::

Related

prion 1
cvelist 1
nvd 1
prion
prion
Design/Logic Flaw
2021-10-20 20:15:00
cvelist
cvelist
CVE-2021-42766
2021-10-20 19:27:43
nvd
nvd
CVE-2021-42766
2021-10-20 20:15:07

CVSS2

6.4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

9.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.8

Confidence

High

EPSS

0.001

Percentile

42.7%

JSON
Related for CVE-2021-42766
prion1cvelist1nvd1