Denial of Service Vulnerability in Go-Ethereum by Ethereum
CVE-2021-43668

5.5MEDIUM

Key Information:

Vendor

Ethereum

Status
Go Ethereum
Vendor
CVE Published:
18 November 2021

What is CVE-2021-43668?

A vulnerability exists in Go-Ethereum 1.10.9 that causes nodes to crash upon receiving a specific sequence of messages. This results in a denial of service, as the nodes are unable to recover from the 'runtime error: invalid memory address or nil pointer dereference', leading to a segmentation fault (SEGV). Network disruptions can significantly impact operations, making it essential for users to address this issue promptly.

References

https://github.com/ethereum/go-ethereum/issues/23866
x_refsource_MISC

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2021-43668 : Denial of Service Vulnerability in Go-Ethereum by Ethereum