CVE Vulnerability

CVE-2020-12638

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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 5.5 / Impact : 4.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

Scope

6.8 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.6 / Impact : 5.2

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/espressif/ESP8266_RTOS_SDK Third Party Advisory
https://github.com/espressif/ESP8266_NONOS_SDK Third Party Advisory
https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors Exploit Patch
https://github.com/espressif/esp-idf Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:espressif:esp8266_nonos_sdk:*:*:*:*:*:*:*:*
cpe:2.3:a:espressif:esp8266_rtos_sdk:*:*:*:*:*:*:*:*
cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:*
Information

Published : 2020-07-23 04:15

Updated : 2021-07-21 11:39

NVD link : CVE-2020-12638

Mitre link : CVE-2020-12638

Products Affected
No products.
CWE
CWE-287

CWE-319

Cleartext Transmission of Sensitive Information