Vulnerability CVE-2021-22565
Published: 2021-12-09

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.

Type:

CWE-732

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5.8/10
4.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
Partial
Affected software
Google -> Exposure notification verification server 

 References:
https://github.com/google/exposure-notifications-verification-server/releases/tag/v1.1.2
https://github.com/google/exposure-notifications-verification-server/security/advisories/GHSA-wx8q-rgfr-cf6v
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