CVE-2020-12638
CVSS V2 Medium 4.3
CVSS V3 Medium 6.8
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.
Overview
- CVE ID
- CVE-2020-12638
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2020-07-23T16:15:12
- Last Modified Date
- 2021-07-21T11:39:23
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:* | 1 | OR | 4.2 | |
| cpe:2.3:a:espressif:esp8266_nonos_sdk:*:*:*:*:*:*:*:* | 1 | OR | 3.0.3 | |
| cpe:2.3:a:espressif:esp8266_rtos_sdk:*:*:*:*:*:*:*:* | 1 | OR | 3.3 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:A/AC:M/Au:N/C:P/I:P/A:N
- Access Vector
- ADJACENT_NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 4.3
- Severity
- MEDIUM
- Exploitability Score
- 5.5
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Attack Vector
- ADJACENT_NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 6.8
- Base Severity
- MEDIUM
- Exploitability Score
- 1.6
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/espressif/ESP8266_RTOS_SDK | Third Party Advisory |
| https://github.com/espressif/ESP8266_NONOS_SDK | Third Party Advisory |
| https://lbsfilm.at/blog/wpa2-authenticationmode-downgrade-in-espressif-microprocessors | Exploit Patch Third Party Advisory |
| https://github.com/espressif/esp-idf | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-12638 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12638 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:01:51 | Added to TrackCVE | |||
| 2022-12-04 20:11:41 | 2020-07-23T16:15Z | 2020-07-23T16:15:12 | CVE Published Date | updated |
| 2022-12-04 20:11:41 | 2021-07-21T11:39:23 | CVE Modified Date | updated | |
| 2022-12-04 20:11:41 | Analyzed | Vulnerability Status | updated |