// For flags

CVE-2021-22659

 

Severity Score

8.6
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Rockwell Automation MicroLogix 1400 Version 21.6 and below may allow a remote unauthenticated attacker to send a specially crafted Modbus packet allowing the attacker to retrieve or modify random values in the register. If successfully exploited, this may lead to a buffer overflow resulting in a denial-of-service condition. The FAULT LED will flash RED and communications may be lost. Recovery from denial-of-service condition requires the fault to be cleared by the user.

Rockwell Automation MicroLogix 1400 versión 21.6 y anteriores, puede permitir a un atacante remoto no autenticado enviar un paquete Modbus especialmente diseñado que le permita al atacante recuperar o modificar valores aleatorios en el registro. Si es explotado con éxito, esto puede conllevar a un desbordamiento del búfer que resulte en una condición de denegación de servicio. El LED de FALLO parpadeará en ROJO y es posible que se pierdan las comunicaciones. Una recuperación de la condición de denegación de servicio requiere que el fallo sea eliminado por usuario

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-01-05 CVE Reserved
  • 2021-03-25 CVE Published
  • 2024-02-15 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
References (1)
URL Tag Source
https://us-cert.cisa.gov/ics/advisories/icsa-21-033-01 Third Party Advisory
URL Date SRC
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
Rockwellautomation
Search vendor "Rockwellautomation"
 Micrologix 1400 Firmware
Search vendor "Rockwellautomation" for product "Micrologix 1400 Firmware"
 <= 21.6
Search vendor "Rockwellautomation" for product "Micrologix 1400 Firmware" and version " <= 21.6"
-
Affected
in Rockwellautomation
Search vendor "Rockwellautomation"
 Micrologix 1400
Search vendor "Rockwellautomation" for product "Micrologix 1400"
--
Safe