7.5
HIGH CVSS 3.1
CVE-2020-26240
Ethash Mining DAG Generation Flaw in Go Ethereum Miners
Description

Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. An ethash mining DAG generation flaw in Geth before version 1.9.24 could cause miners to erroneously calculate PoW in an upcoming epoch (estimated early January, 2021). This happened on the ETC chain on 2020-11-06. This issue is relevant only for miners, non-mining nodes are unaffected. This issue is fixed as of 1.9.24

INFO

Published Date :

Nov. 25, 2020, 2:15 a.m.

Last Modified :

Nov. 21, 2024, 5:19 a.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2020-26240 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Ethereum go_ethereum
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 MEDIUM [email protected]
CVSS 3.1 HIGH [email protected]
Public PoC/Exploit Available at Github

CVE-2020-26240 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-26240 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-26240 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Solidity Forcibly Send Ether Vulnerability to a Smart Contract continuation of the list of general EcoSystem security from attacks

ecosystem eth ethereum ethereum-contract smart-contracts solidity solidity-codes solidity-contracts vulnerabilities vulnerability

JavaScript

Updated: 7 months, 2 weeks ago
5 stars 0 fork 0 watcher
Born at : June 5, 2023, 5:39 p.m. This repo has been linked 31 different CVEs too.

A Summary of Vulnerabilities Found in the BlockScope NDSS'23 Paper

Updated: 9 months, 4 weeks ago
9 stars 0 fork 0 watcher
Born at : Jan. 9, 2023, 1:45 p.m. This repo has been linked 8 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-26240 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-26240 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://blog.ethereum.org/2020/11/12/geth_security_release/
    Added Reference https://github.com/ethereum/go-ethereum/commit/d990df909d7839640143344e79356754384dcdd0
    Added Reference https://github.com/ethereum/go-ethereum/pull/21793
    Added Reference https://github.com/ethereum/go-ethereum/security/advisories/GHSA-v592-xf75-856p
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Dec. 03, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    Changed Reference Type https://blog.ethereum.org/2020/11/12/geth_security_release/ No Types Assigned https://blog.ethereum.org/2020/11/12/geth_security_release/ Vendor Advisory
    Changed Reference Type https://github.com/ethereum/go-ethereum/commit/d990df909d7839640143344e79356754384dcdd0 No Types Assigned https://github.com/ethereum/go-ethereum/commit/d990df909d7839640143344e79356754384dcdd0 Patch, Third Party Advisory
    Changed Reference Type https://github.com/ethereum/go-ethereum/pull/21793 No Types Assigned https://github.com/ethereum/go-ethereum/pull/21793 Patch, Third Party Advisory
    Changed Reference Type https://github.com/ethereum/go-ethereum/security/advisories/GHSA-v592-xf75-856p No Types Assigned https://github.com/ethereum/go-ethereum/security/advisories/GHSA-v592-xf75-856p Third Party Advisory
    Added CWE NIST CWE-682
    Added CPE Configuration OR *cpe:2.3:a:ethereum:go_ethereum:*:*:*:*:*:*:*:* versions up to (excluding) 1.9.24
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 5
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.27 }} -0.16%

score

0.47361

percentile