Exploiting Short-Range Reorganizations: A Denial of Service and Profit Amplification Vulnerability in Ethereum's Proof-of-Stake (PoS) Consensus Protocol

CVE-2021-42764 · CRITICAL Severity

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

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.

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