Consensus flaw during block processing
CVE-2020-26265

5.3MEDIUM

Key Information:

Vendor

Ethereum

Status
Go-ethereum
Vendor
CVE Published:
11 December 2020

What is CVE-2020-26265?

Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. In Geth from version 1.9.4 and before version 1.9.20 a consensus-vulnerability could cause a chain split, where vulnerable versions refuse to accept the canonical chain. The fix was included in the Paragade release version 1.9.20. No individual workaround patches have been made -- all users are recommended to upgrade to a newer version.

Affected Version(s)

go-ethereum >= 1.9.4, < 1.9.20

References

https://github.com/ethereum/go-ethereum/security/advisori...
x_refsource_CONFIRM
https://github.com/ethereum/go-ethereum/releases/tag/v1.9.20
x_refsource_MISC

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2020-26265 : Consensus flaw during block processing