// For flags

CVE-2018-18558

 

Severity Score

6.4
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An issue was discovered in Espressif ESP-IDF 2.x and 3.x before 3.0.6 and 3.1.x before 3.1.1. Insufficient validation of input data in the 2nd stage bootloader allows a physically proximate attacker to bypass secure boot checks and execute arbitrary code, by crafting an application binary that overwrites a bootloader code segment in process_segment in components/bootloader_support/src/esp_image_format.c. The attack is effective when the flash encryption feature is not enabled, or if the attacker finds a different vulnerability that allows them to write this binary to flash memory.

Se descubrió un problema en Espressif ESP-IDF versión 2.x y versión 3.x anterior a 3.0.6 y versión 3.1.x anterior a 3.1.1. La comprobación insuficiente de los datos de entrada en el gestor de arranque de la segunda etapa permite que un atacante físicamente próximo omita las comprobaciones de arranque seguras y ejecute código arbitrario, creando un binario de aplicación que sobrescriba un segmento de código del gestor de arranque en el parámetro process_segment en el archivo components/bootloader_support/src/esp_image_format.c. El ataque es exitoso cuando la función de cifrado flash está inhabilitada, o si el atacante encuentra una vulnerabilidad distinta que le permite escribir este binario en la memoria flash.

*Credits: N/A
CVSS Scores
Attack Vector
Physical
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-10-22 CVE Reserved
  • 2019-05-13 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-05 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Espressif
Search vendor "Espressif"
 Esp-idf
Search vendor "Espressif" for product "Esp-idf"
 >= 2.0 < 3.0.6
Search vendor "Espressif" for product "Esp-idf" and version " >= 2.0 < 3.0.6"
-
Affected
Espressif
Search vendor "Espressif"
 Esp-idf
Search vendor "Espressif" for product "Esp-idf"
 >= 3.1 <= 3.1.1
Search vendor "Espressif" for product "Esp-idf" and version " >= 3.1 <= 3.1.1"
-
Affected