CVE-2020-26265

Consensus flaw during block processing

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Go Ethereum, o "Geth", es la implementación oficial de Golang del protocolo Ethereum. En Geth desde versión 1.9.4 y versiones anteriores a 1.9.20, una vulnerabilidad de consenso podría causar una división de cadena, donde unas versiones vulnerables se niegan a aceptar la cadena canónica. La corrección se incluyó en versión 1.9.20 de la versión de Paragade. No han sido hechos parches de solución individual; se recomienda a todos los usuarios actualizar a una versión más reciente

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-01 CVE Reserved
2020-12-11 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-682: Incorrect Calculation

CAPEC

References (2)

URL	Tag	Source
https://github.com/ethereum/go-ethereum/releases/tag/v1.9.20	Third Party Advisory
https://github.com/ethereum/go-ethereum/security/advisories/GHSA-xw37-57qp-9mm4	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Ethereum Search vendor "Ethereum"		Go Ethereum Search vendor "Ethereum" for product "Go Ethereum"				>= 1.9.4 < 1.9.20 Search vendor "Ethereum" for product "Go Ethereum" and version " >= 1.9.4 < 1.9.20"		-		Affected