CVE-2020-12638
published 2020-07-23CVE-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…
PriorityP433medium6.8CVSS 3.1
AVAACHPRNUINSUCHIHAN
EPSS
0.47%
37.1th percentile
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.
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| espressif | esp-idf | <= 4.2 | — |
| espressif | esp8266_nonos_sdk | <= 3.0.3 | — |
| espressif | esp8266_rtos_sdk | <= 3.3 | — |
CVSS provenance
nvdv3.16.8MEDIUMCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
nvdv2.04.3MEDIUMAV:A/AC:M/Au:N/C:P/I:P/A:N
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No detection rules found.
No public exploits indexed.
https://github.com/espressif/ESP8266_NONOS_SDKhttps://github.com/espressif/ESP8266_RTOS_SDKhttps://github.com/espressif/esp-idfhttps://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessorshttps://github.com/espressif/ESP8266_NONOS_SDKhttps://github.com/espressif/ESP8266_RTOS_SDKhttps://github.com/espressif/esp-idfhttps://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors
2020-07-23
Published