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CVE-2021-22565— Insufficient Granularity of Access Control in GAEN Notification Server

Quick assessment

Affected
Google LLC Google Exposure-notifications-verification-server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Google Exposure Notifications Verification Server是美国谷歌（Google）公司的一个开源的 Covid-19 暴露通知的验证组件。 Google Exposure Notifications Verification Server V1.1.2之前版本存在安全漏洞，攻击者可利用该漏洞使验证码失效。

CVSS 6.5 · Medium EPSS 0.44% · P36

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-22565

Vulnerability Information
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Vulnerability Title
Insufficient Granularity of Access Control in GAEN Notification Server
Source: CVE Program / CVE List V5
Vulnerability Description
An attacker could prematurely expire a verification code, making it unusable by the patient, making the patient unable to upload their TEKs to generate exposure notifications. We recommend upgrading the Exposure Notification server to V1.1.2 or greater.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Google Exposure Notifications Verification Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Exposure Notifications Verification Server是美国谷歌（Google）公司的一个开源的 Covid-19 暴露通知的验证组件。 Google Exposure Notifications Verification Server V1.1.2之前版本存在安全漏洞，攻击者可利用该漏洞使验证码失效。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Google LLC Google Exposure-notifications-verification-server unspecified ~ 1.1.2 -

II. Public POCs for CVE-2021-22565

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III. Intelligence Information for CVE-2021-22565

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Vendor Advisories for CVE-2021-22565 (1)

Other References for CVE-2021-22565 (1)

IV. Related Vulnerabilities

Same vendor: Google LLC
Same weakness: CWE-284

V. Comments for CVE-2021-22565

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