Denial of Service Vulnerability in Go Ethereum by Ethereum Foundation
CVE-2018-20421

7.5HIGH

Key Information:

Vendor

Ethereum

Status
Go Ethereum
Vendor
CVE Published:
24 December 2018

What is CVE-2018-20421?

A vulnerability in Go Ethereum version 1.8.19 allows attackers to create a denial of service by manipulating dynamic array lengths in memory. This exploit can lead to excessive memory consumption when an attacker rewrites the length of a dynamic array and writes data to a high memory index location. The attack can be executed using assembly commands, potentially disrupting the normal operation of the affected application.

References

https://github.com/ethereum/go-ethereum/issues/18289
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability Reserved

  • Vulnerability published

.