CVE-2021-42764 — CRITICAL (9.1)

Q: How severe is CVE-2021-42764?

CVE-2021-42764 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2021-42764?

Check the references section above for vendor advisories and patch information. Affected products include: Proof-Of-Stake Ethereum Project Proof-Of-Stake Ethereum.

Vulnerability Description

The Proof-of-Stake (PoS) Ethereum consensus protocol through 2021-10-19 allows an adversary to cause a denial of service (delayed consensus decisions), and also increase the profits of individual validators, via short-range reorganizations of the underlying consensus chain.

CVSS Score

9.1

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Proof-Of-Stake Ethereum Project	Proof-Of-Stake Ethereum	<= 2021-10-19

References

https://arxiv.org/abs/2110.10086Third Party Advisory
https://arxiv.org/abs/2110.10086Third Party Advisory

FAQ

What is CVE-2021-42764?

CVE-2021-42764 is a vulnerability with a CVSS score of 9.1 (CRITICAL). The Proof-of-Stake (PoS) Ethereum consensus protocol through 2021-10-19 allows an adversary to cause a denial of service (delayed consensus decisions), and also increase the profits of individual vali...

How severe is CVE-2021-42764?

CVE-2021-42764 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-42764?

Check the references section above for vendor advisories and patch information. Affected products include: Proof-Of-Stake Ethereum Project Proof-Of-Stake Ethereum.