CVE-2020-12638

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2020-07-23T15:41:58.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://github.com/espressif/esp-idf"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/espressif/ESP8266_NONOS_SDK"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/espressif/ESP8266_RTOS_SDK"}, {"tags": ["x_refsource_MISC"], "url": "https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2020-12638", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://github.com/espressif/esp-idf", "refsource": "MISC", "url": "https://github.com/espressif/esp-idf"}, {"name": "https://github.com/espressif/ESP8266_NONOS_SDK", "refsource": "MISC", "url": "https://github.com/espressif/ESP8266_NONOS_SDK"}, {"name": "https://github.com/espressif/ESP8266_RTOS_SDK", "refsource": "MISC", "url": "https://github.com/espressif/ESP8266_RTOS_SDK"}, {"name": "https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors", "refsource": "MISC", "url": "https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T12:04:22.314Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/espressif/esp-idf"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/espressif/ESP8266_NONOS_SDK"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/espressif/ESP8266_RTOS_SDK"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2020-12638", "datePublished": "2020-07-23T15:41:58.000Z", "dateReserved": "2020-05-04T00:00:00.000Z", "dateUpdated": "2024-08-04T12:04:22.314Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:*", "matchCriteriaId": "1C54B320-683C-4645-86DC-65CE4FA1EAB4", "versionEndIncluding": "4.2", "vulnerable": true}, {"criteria": "cpe:2.3:a:espressif:esp8266_nonos_sdk:*:*:*:*:*:*:*:*", "matchCriteriaId": "94531964-D549-418B-B85B-3B749B9F365D", "versionEndIncluding": "3.0.3", "vulnerable": true}, {"criteria": "cpe:2.3:a:espressif:esp8266_rtos_sdk:*:*:*:*:*:*:*:*", "matchCriteriaId": "27E60BB2-BAC0-4582-8EEF-D89EB874DF17", "versionEndIncluding": "3.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Se detect\u00f3 un problema de omisi\u00f3n de cifrado en dispositivos Espressif ESP-IDF versiones hasta 4.2, dispositivos ESP8266_NONOS_SDK versiones hasta 3.0.3 y dispositivos ESP8266_RTOS_SDK versiones hasta 3.3. La transmisi\u00f3n de tramas beacon forjadas obliga a un dispositivo a cambiar su modo de autenticaci\u00f3n a OPEN, deshabilitando efectivamente su encriptaci\u00f3n 802.11"}], "id": "CVE-2020-12638", "lastModified": "2026-06-17T02:52:02.963", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:A/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 5.5, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-07-23T16:15:12.490", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/espressif/ESP8266_NONOS_SDK"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/espressif/ESP8266_RTOS_SDK"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/espressif/esp-idf"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/espressif/ESP8266_NONOS_SDK"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/espressif/ESP8266_RTOS_SDK"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/espressif/esp-idf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Patch", "Third Party Advisory"], "url": "https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}, {"lang": "en", "value": "CWE-319"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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