CVE-2021-22565 is a vulnerability in Google Exposure Notification Verification Server
Published on December 9, 2021
Insufficient Granularity of Access Control in GAEN Notification Server
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.
Vulnerability Analysis
CVE-2021-22565 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity and availability.
Weakness Type
What is an Authorization Vulnerability?
The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CVE-2021-22565 has been classified to as an Authorization vulnerability or weakness.
Products Associated with CVE-2021-22565
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Affected Versions
Google LLC Google Exposure-notifications-verification-server:- Version unspecified and below 1.1.2 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.