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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.8 MEDIUM
ADJACENT_NETWORK
HIGH
NONE
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 8%
VendorProductVersion
espressifesp-idf
𝑥
≤ 4.2
espressifesp8266_nonos_sdk
𝑥
≤ 3.0.3
espressifesp8266_rtos_sdk
𝑥
≤ 3.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/espressif/ESP8266_NONOS_SDK
https://github.com/espressif/ESP8266_RTOS_SDK
https://github.com/espressif/esp-idf
https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors
https://github.com/espressif/ESP8266_NONOS_SDK
https://github.com/espressif/ESP8266_RTOS_SDK
https://github.com/espressif/esp-idf
https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors