Filtered by vendor Exposure Notifications Project Subscriptions
Filtered by product Exposure Notifications Subscriptions
Total 1 CVE
CVE Vendors Products Updated CVSS v3.1
CVE-2020-24722 1 Exposure Notifications Project 1 Exposure Notifications 2024-08-04 5.9 Medium
An issue was discovered in the GAEN (aka Google/Apple Exposure Notifications) protocol through 2020-10-05, as used in COVID-19 applications on Android and iOS. The encrypted metadata block with a TX value lacks a checksum, allowing bitflipping to amplify a contamination attack. This can cause metadata deanonymization and risk-score inflation. NOTE: the vendor's position is "We do not believe that TX power authentication would be a useful defense against relay attacks.