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.

CVSS v3 6.8 MEDIUM
CVSS v2.0 4.3 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

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

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:A/AC:M/Au:N/C:P/I:P/A:N

Exploitability : 5.5 / Impact : 4.9

Access Vector ADJACENT_NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
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
https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors	Exploit Patch Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:espressif:esp-idf::::::::
	cpe:2.3:a:espressif:esp8266_nonos_sdk::::::::
	cpe:2.3:a:espressif:esp8266_rtos_sdk::::::::

History

No history.

Information

Published : 2020-07-23 16:15

Updated : 2023-12-10 13:27

NVD link : CVE-2020-12638

Mitre link : CVE-2020-12638

CVE.ORG link : CVE-2020-12638

JSON object : View

Products Affected

espressif

esp8266_rtos_sdk
esp-idf
esp8266_nonos_sdk

CWE

CWE-287

Improper Authentication

CWE-319

Cleartext Transmission of Sensitive Information

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