CVE-2020-12638 Detail
Current Description
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.
Analysis Description
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.
Severity
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | NIST |
Change History
1 change records found show changes
Initial Analysis 7/28/2020 1:3:43 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CPE Configuration |
OR
*cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:* versions up to (including) 4.2
*cpe:2.3:a:espressif:esp8266_nonos_sdk:*:*:*:*:*:*:*:* versions up to (including) 3.0.3
*cpe:2.3:a:espressif:esp8266_rtos_sdk:*:*:*:*:*:*:*:* versions up to (including) 3.3
|
|
| Added | CVSS V2 |
NIST (AV:A/AC:M/Au:N/C:P/I:P/A:N) |
|
| Added | CVSS V3.1 |
NIST AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
|
| Added | CWE |
NIST CWE-287 |
|
| Changed | Reference Type |
https://github.com/espressif/ESP8266_NONOS_SDK No Types Assigned |
https://github.com/espressif/ESP8266_NONOS_SDK Third Party Advisory |
| Changed | Reference Type |
https://github.com/espressif/ESP8266_RTOS_SDK No Types Assigned |
https://github.com/espressif/ESP8266_RTOS_SDK Third Party Advisory |
| Changed | Reference Type |
https://github.com/espressif/esp-idf No Types Assigned |
https://github.com/espressif/esp-idf Third Party Advisory |
| Changed | Reference Type |
https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors No Types Assigned |
https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors Exploit, Patch, Third Party Advisory |
Quick Info
CVE Dictionary Entry:
CVE-2020-12638
NVD Published Date:
07/23/2020
NVD Last Modified:
07/28/2020
Source:
MITRE