// For flags

CVE-2021-43839

Drainage of FeeCollector's Block Transaction Fees

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Cronos is a commercial implementation of a blockchain. In Cronos nodes running versions before v0.6.5, it is possible to take transaction fees from Cosmos SDK's FeeCollector for the current block by sending a custom crafted MsgEthereumTx. This problem has been patched in Cronos v0.6.5. There are no tested workarounds. All validator node operators are recommended to upgrade to Cronos v0.6.5 at their earliest possible convenience.

Cronos es una implementación comercial de una cadena de bloques. En los nodos de Cronos que ejecutan versiones anteriores a la v0.6.5, es posible tomar las tasas de transacción del FeeCollector de Cosmos SDK para el bloque actual mediante el envío de un MsgEthereumTx diseñado a medida. Este problema ha sido parcheado en Cronos versión v0.6.5. No se presentan soluciones probadas. Se recomienda a todos los operadores de nodos comprobadores que actualicen a Cronos versión v0.6.5 lo antes posible

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-11-16 CVE Reserved
  • 2021-12-21 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-09-05 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-670: Always-Incorrect Control Flow Implementation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Crypto
Search vendor "Crypto"
 Cronos
Search vendor "Crypto" for product "Cronos"
 < 0.6.5
Search vendor "Crypto" for product "Cronos" and version " < 0.6.5"
-
Affected
Crypto
Search vendor "Crypto"
 Ethermint
Search vendor "Crypto" for product "Ethermint"
 < 0.7.3
Search vendor "Crypto" for product "Ethermint" and version " < 0.7.3"
-
Affected
Crypto
Search vendor "Crypto"
 Ethermint
Search vendor "Crypto" for product "Ethermint"
 >= 0.8.0 <= 0.9.0
Search vendor "Crypto" for product "Ethermint" and version " >= 0.8.0 <= 0.9.0"
-
Affected
Crypto
Search vendor "Crypto"
 Evmos
Search vendor "Crypto" for product "Evmos"
 <= 0.4.2
Search vendor "Crypto" for product "Evmos" and version " <= 0.4.2"
-
Affected