GSD-2020-12638

Vulnerability from gsd - Updated: 2023-12-13 01:21
Details
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.
Aliases
Aliases
CVE-2020-12638
To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-12638",
    "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.",
    "id": "GSD-2020-12638"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-12638"
      ],
      "details": "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.",
      "id": "GSD-2020-12638",
      "modified": "2023-12-13T01:21:49.294730Z",
      "schema_version": "1.4.0"
    }
  },
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        "ID": "CVE-2020-12638",
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      "references": {
        "reference_data": [
          {
            "name": "https://github.com/espressif/esp-idf",
            "refsource": "MISC",
            "url": "https://github.com/espressif/esp-idf"
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          {
            "name": "https://github.com/espressif/ESP8266_NONOS_SDK",
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            "url": "https://github.com/espressif/ESP8266_NONOS_SDK"
          },
          {
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            "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"
          }
        ]
      }
    },
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        "nodes": [
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                "versionEndIncluding": "4.2",
                "vulnerable": true
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                "cpe23Uri": "cpe:2.3:a:espressif:esp8266_nonos_sdk:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "3.0.3",
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              {
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        "description": {
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              "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": {
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              "description": [
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                  "value": "CWE-287"
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                  "value": "CWE-319"
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            {
              "name": "https://github.com/espressif/ESP8266_RTOS_SDK",
              "refsource": "MISC",
              "tags": [
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            },
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        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "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,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "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
        }
      },
      "lastModifiedDate": "2021-07-21T11:39Z",
      "publishedDate": "2020-07-23T16:15Z"
    }
  }
}



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