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CVE-2020-12638

Published: Jul 23, 2020

Modified: Aug 4, 2024

PUBLISHED

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.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

https://github.com/espressif/esp-idf

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https://github.com/espressif/ESP8266_NONOS_SDK

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https://github.com/espressif/ESP8266_RTOS_SDK

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https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors

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