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.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
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
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-26240.
| URL | Resource |
|---|---|
| https://blog.ethereum.org/2020/11/12/geth_security_release/ | Vendor Advisory |
| https://github.com/ethereum/go-ethereum/commit/d990df909d7839640143344e79356754384dcdd0 | Patch Third Party Advisory |
| https://github.com/ethereum/go-ethereum/pull/21793 | Patch Third Party Advisory |
| https://github.com/ethereum/go-ethereum/security/advisories/GHSA-v592-xf75-856p | Third Party Advisory |
| https://blog.ethereum.org/2020/11/12/geth_security_release/ | Vendor Advisory |
| https://github.com/ethereum/go-ethereum/commit/d990df909d7839640143344e79356754384dcdd0 | Patch Third Party Advisory |
| https://github.com/ethereum/go-ethereum/pull/21793 | Patch Third Party Advisory |
| https://github.com/ethereum/go-ethereum/security/advisories/GHSA-v592-xf75-856p | Third Party Advisory |
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
A Summary of Vulnerabilities Found in the BlockScope NDSS'23 Paper
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.
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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
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.
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