CVE-2020-12638
Severity Score
6.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
An encryption-bypass issue was discovered on Espressif ESP-IDF devices through 4.2, ESP8266_NONOS_SDK devices through 3.0.3, and ESP8266_RTOS_SDK devices through 3.3. Broadcasting forged beacon frames forces a device to change its authentication mode to OPEN, effectively disabling its 802.11 encryption.
Se detectó un problema de omisión de cifrado en dispositivos Espressif ESP-IDF versiones hasta 4.2, dispositivos ESP8266_NONOS_SDK versiones hasta 3.0.3 y dispositivos ESP8266_RTOS_SDK versiones hasta 3.3. La transmisión de tramas beacon forjadas obliga a un dispositivo a cambiar su modo de autenticación a OPEN, deshabilitando efectivamente su encriptación 802.11
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2020-05-04 CVE Reserved
- 2020-07-23 CVE Published
- 2023-04-08 EPSS Updated
- 2024-08-04 CVE Updated
- 2024-08-04 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-287: Improper Authentication
- CWE-319: Cleartext Transmission of Sensitive Information
CAPEC
References (4)
| URL | Tag | Source |
|---|---|---|
| https://github.com/espressif/ESP8266_NONOS_SDK | Third Party Advisory | |
| https://github.com/espressif/ESP8266_RTOS_SDK | Third Party Advisory | |
| https://github.com/espressif/esp-idf | Third Party Advisory |
| URL | Date | SRC |
|---|---|---|
| https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors | 2024-08-04 |
| 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 |
| Espressif Search vendor "Espressif" | Esp-idf Search vendor "Espressif" for product "Esp-idf" | <= 4.2 Search vendor "Espressif" for product "Esp-idf" and version " <= 4.2" | - |
Affected
| ||||||
| Espressif Search vendor "Espressif" | Esp8266 Nonos Sdk Search vendor "Espressif" for product "Esp8266 Nonos Sdk" | <= 3.0.3 Search vendor "Espressif" for product "Esp8266 Nonos Sdk" and version " <= 3.0.3" | - |
Affected
| ||||||
| Espressif Search vendor "Espressif" | Esp8266 Rtos Sdk Search vendor "Espressif" for product "Esp8266 Rtos Sdk" | <= 3.3 Search vendor "Espressif" for product "Esp8266 Rtos Sdk" and version " <= 3.3" | - |
Affected
| ||||||