Vulnerability in Apple Exposure Notifications
CVE-2020-24721
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (22.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
References
- blog.google/inside-google/company-announcements/update-exposure-notifications (Vendor Advisory)
- github.com/minvws/nl-covid19-notification-app-coordination/blob/master/CVEs/CVE… (Third Party Advisory)
- seclists.org/fulldisclosure/2020/Sep/53 (mailing-list, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/159419/Corona-Exposure-Notifications-API-Data-Lea… (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-24721?
- CVE-2020-24721 is a medium-severity vulnerability in Apple Exposure Notifications. CVSS score: 5.7/10. Published 2020-09-30.
- How severe is CVE-2020-24721?
- Medium severity. CVSS v3 base score is 5.7 out of 10.