CVE-2020-26230— Radar COVID 信息泄露漏洞
一分钟漏洞结论
影响对象
RadarCOVID radar-covid-backend-dp3t-server
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Radar COVID是西班牙的一款对 COVID-19 进行暴露统治的软件。 Radar COVID 存在安全漏洞，该漏洞源于Radar COVID连接到服务器（将TEK上载到后端）仅由COVID-19肯定的连接造成的。
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一、 漏洞 CVE-2020-26230 基础信息
漏洞信息
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Vulnerability Title
Deanonymization of COVID-19 positive users of Radar COVID
来源: CVE Program / CVE List V5
Vulnerability Description
Radar COVID is the official COVID-19 exposure notification app for Spain. In affected versions of Radar COVID, identification and de-anonymization of COVID-19 positive users that upload Radar COVID TEKs to the Radar COVID server is possible. This vulnerability enables the identification and de-anonymization of COVID-19 positive users when using Radar COVID. The vulnerability is caused by the fact that Radar COVID connections to the server (uploading of TEKs to the backend) are only made by COVID-19 positives. Therefore, any on-path observer with the ability to monitor traffic between the app and the server can identify which users had a positive test. Such an adversary can be the mobile network operator (MNO) if the connection is done through a mobile network, the Internet Service Provider (ISP) if the connection is done through the Internet (e.g., a home network), a VPN provider used by the user, the local network operator in the case of enterprise networks, or any eavesdropper with access to the same network (WiFi or Ethernet) as the user as could be the case of public WiFi hotspots deployed at shopping centers, airports, hotels, and coffee shops. The attacker may also de-anonymize the user. For this additional stage to succeed, the adversary needs to correlate Radar COVID traffic to other identifiable information from the victim. This could be achieved by associating the connection to a contract with the name of the victim or by associating Radar COVID traffic to other user-generated flows containing identifiers in the clear (e.g., HTTP cookies or other mobile flows sending unique identifiers like the IMEI or the AAID without encryption). The former can be executed, for instance, by the Internet Service Provider or the MNO. The latter can be executed by any on-path adversary, such as the network provider or even the cloud provider that hosts more than one service accessed by the victim. The farther the adversary is either from the victim (the client) or the end-point (the server), the less likely it may be that the adversary has access to re-identification information. The vulnerability has been mitigated with the injection of dummy traffic from the application to the backend. Dummy traffic is generated by all users independently of whether they are COVID-19 positive or not. The issue was fixed in iOS in version 1.0.8 (uniform distribution), 1.1.0 (exponential distribution), Android in version 1.0.7 (uniform distribution), 1.1.0 (exponential distribution), Backend in version 1.1.2-RELEASE. For more information see the referenced GitHub Security Advisory.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
信息暴露
来源: CVE Program / CVE List V5
Vulnerability Title
Radar COVID 信息泄露漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Radar COVID是西班牙的一款对 COVID-19 进行暴露统治的软件。 Radar COVID 存在安全漏洞，该漏洞源于Radar COVID连接到服务器（将TEK上载到后端）仅由COVID-19肯定的连接造成的。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| RadarCOVID | radar-covid-backend-dp3t-server | iOS version < 1.0.8 | - |
|
二、漏洞 CVE-2020-26230 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2020-26230 补丁与修复 (10)
CVE-2020-26230 厂商安全公告 (1)
CVE-2020-26230 其他参考 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2020-26230
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