// For flags

CVE-2020-27486

 

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: Buffer Overflow. 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 trusts the string length provided in the data section of the PRG file. It allocates memory for the string immediately, and then copies the string into the TVM object by using a function similar to strcpy. This copy can exceed the length of the allocated string data and overwrite heap data. 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 Desbordamiento del Búfer. 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 confía en la longitud de la cadena proporcionada en la sección de datos del archivo PRG. Asigna memoria para la cadena inmediatamente y luego copia la cadena en el objeto TVM mediante una función similar a strcpy. Esta copia puede exceder la longitud de los datos de cadena asignados y sobrescribir los datos de la pila. 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-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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