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Exposure Notifications

exposure_notifications

Vendor: Exposure Notifications Project • 1 CVE

CVEs (1)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
CVE-2020-24722
1Exposure Notifications Project
1Exposure Notifications
Nov 21, 2024
Oct 7, 2020
N/A· v4
5.9 MEDIUM· v3
2.6 LOW· v2
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 checksu...Show more
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.Show less