// For flags

CVE-2020-27485

 

Severity Score

9.9
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Garmin Forerunner 235 before 8.20 is affected by: Array index error. The component is: ConnectIQ TVM. The attack vector is: To exploit the vulnerability, the attacker must upload a malicious ConnectIQ application to the ConnectIQ store. The ConnectIQ program interpreter fails to check the index provided when accessing the local variable in the LGETV and LPUTV instructions. This provides the ability to both read and write memory outside the bounds of the TVM context allocation. It can be leveraged to construct a use-after-free scenario, leading to a constrained read/write primitive across the entire MAX32630 address space. A successful exploit would allow a ConnectIQ app store application to escape and perform activities outside the restricted application execution environment.

Garmin Forerunner 235 versiones anteriores a 8.20, está afectado por: un Error de índice de Matriz. El componente es: ConnectIQ TVM. El vector de ataque es: Para explotar la vulnerabilidad, el atacante debe cargar una aplicación de ConnectIQ maliciosa en la tienda ConnectIQ. El intérprete del programa ConnectIQ presenta un fallo al comprobar el índice proporcionado cuando se accede a la variable local en las instrucciones LGETV y LPUTV. Esto proporciona la capacidad de leer y escribir la memoria fuera de los límites de la asignación del contexto TVM. Puede ser aprovechada para construir un escenario de uso de la memoria previamente liberada, conllevando a una primitiva de lectura y escritura restringida en todo el espacio de direcciones MAX32630. Una explotación con éxito permitiría a una aplicación de la tienda de aplicaciones ConnectIQ escapar y llevar a cabo actividades fuera del entorno de ejecución de aplicaciones restringido

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-10-21 CVE Reserved
  • 2020-11-16 CVE Published
  • 2024-03-21 EPSS Updated
  • 2024-08-04 CVE Updated
  • 2024-08-04 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-129: Improper Validation of Array Index
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Garmin
Search vendor "Garmin"
 Forerunner 235 Firmware
Search vendor "Garmin" for product "Forerunner 235 Firmware"
 >= 7.90 < 8.20
Search vendor "Garmin" for product "Forerunner 235 Firmware" and version " >= 7.90 < 8.20"
-
Affected
in Garmin
Search vendor "Garmin"
 Forerunner 235
Search vendor "Garmin" for product "Forerunner 235"
--
Safe