CVE-2021-35041

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The blockchain node in FISCO-BCOS V2.7.2 may have a bug when dealing with unformatted packet and lead to a crash. A malicious node can send a packet continuously. The packet is in an incorrect format and cannot be decoded by the node correctly. As a result, the node may consume the memory sustainably and crash. More details are shown at: https://github.com/FISCO-BCOS/FISCO-BCOS/issues/1951

El nodo blockchain en FISCO-BCOS versión V2.7.2, puede tener un error cuando se trata de paquetes sin formato y conllevar a un bloqueo. Un nodo malicioso puede enviar un paquete de forma continua. El paquete tiene un formato incorrecto y el nodo no puede decodificarlo correctamente. Como resultado, el nodo puede consumir la memoria de forma sostenible y colapsar. Más detalles son mostrados en: https://github.com/FISCO-BCOS/FISCO-BCOS/issues/1951

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-06-18 CVE Reserved
2021-06-23 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2024-12-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://github.com/FISCO-BCOS/FISCO-BCOS/issues/1951	2024-08-04

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
Fisco-bcos Search vendor "Fisco-bcos"		Fisco-bcos Search vendor "Fisco-bcos" for product "Fisco-bcos"				2.7.2 Search vendor "Fisco-bcos" for product "Fisco-bcos" and version "2.7.2"		-		Affected