CVE-2020-26264
Go Ethereum (Geth) LES Server Denial-of-Service Vulnerability
Description
Go Ethereum, or "Geth", is the official Golang implementation of the Ethereum protocol. In Geth before version 1.9.25 a denial-of-service vulnerability can make a LES server crash via malicious GetProofsV2 request from a connected LES client. This vulnerability only concerns users explicitly enabling les server; disabling les prevents the exploit. The vulnerability was patched in version 1.9.25.
INFO
Published Date :
Dec. 11, 2020, 5:15 p.m.
Last Modified :
Dec. 14, 2020, 6:06 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
Public PoC/Exploit Available at Github
CVE-2020-26264 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-2020-26264.
| URL | Resource |
|---|---|
| https://github.com/ethereum/go-ethereum/commit/bddd103a9f0af27ef533f04e06ea429cf76b6d46 | Patch Third Party Advisory |
| https://github.com/ethereum/go-ethereum/pull/21896 | Patch Third Party Advisory |
| https://github.com/ethereum/go-ethereum/releases/tag/v1.9.25 | Third Party Advisory |
| https://github.com/ethereum/go-ethereum/security/advisories/GHSA-r33q-22hv-j29q | 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-2020-26264 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-26264 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Dec. 14, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/ethereum/go-ethereum/commit/bddd103a9f0af27ef533f04e06ea429cf76b6d46 No Types Assigned https://github.com/ethereum/go-ethereum/commit/bddd103a9f0af27ef533f04e06ea429cf76b6d46 Patch, Third Party Advisory Changed Reference Type https://github.com/ethereum/go-ethereum/pull/21896 No Types Assigned https://github.com/ethereum/go-ethereum/pull/21896 Patch, Third Party Advisory Changed Reference Type https://github.com/ethereum/go-ethereum/releases/tag/v1.9.25 No Types Assigned https://github.com/ethereum/go-ethereum/releases/tag/v1.9.25 Third Party Advisory Changed Reference Type https://github.com/ethereum/go-ethereum/security/advisories/GHSA-r33q-22hv-j29q No Types Assigned https://github.com/ethereum/go-ethereum/security/advisories/GHSA-r33q-22hv-j29q Third Party Advisory Added CWE NIST CWE-400 Added CPE Configuration OR *cpe:2.3:a:ethereum:go_ethereum:*:*:*:*:*:*:*:* versions up to (excluding) 1.9.25
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-26264 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-2020-26264
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.16 }} 0.05%
score
0.52373
percentile