CVE-2020-24721
MEDIUMApple and Google Exposure Notifications < 1.5 - Data Leakage via Persistent State
Title source: llmDescription
An issue was discovered in the GAEN (aka Google/Apple Exposure Notifications) protocol through 2020-09-29, as used in COVID-19 applications on Android and iOS. It allows a user to be put in a position where he or she can be coerced into proving or disproving an exposure notification, because of the persistent state of a private framework.
References (4)
Core 4
Core References
Vendor Advisory x_refsource_misc
https://blog.google/inside-google/company-announcements/update-exposure-notifications
Third Party Advisory x_refsource_misc
https://github.com/minvws/nl-covid19-notification-app-coordination/blob/master/CVEs/CVE-2020-24721.txt
Mailing List, Third Party Advisory mailing-list
x_refsource_fulldisc
https://seclists.org/fulldisclosure/2020/Sep/53
Third Party Advisory, VDB Entry x_refsource_misc
http://packetstormsecurity.com/files/159419/Corona-Exposure-Notifications-API-Data-Leakage.html
Scores
CVSS v3
5.7
EPSS
0.0032
EPSS Percentile
23.6%
Attack Vector
PHYSICAL
CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Details
Status
published
Products (2)
apple/exposure_notifications
< 1.5
google/exposure_notifications
< 1.5
Published
Sep 30, 2020
Tracked Since
Feb 18, 2026