CVE-2020-24721

Description

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.

5.7

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.06%

Vendor Advisory blog.google

Affected: n/a n/a

References

Link	Tags
https://blog.google/inside-google/company-announcements/update-exposure-notifications	vendor advisory
https://github.com/minvws/nl-covid19-notification-app-coordination/blob/master/CVEs/CVE-2020-24721.txt	third party advisory
https://seclists.org/fulldisclosure/2020/Sep/53	third party advisory mailing list
http://packetstormsecurity.com/files/159419/Corona-Exposure-Notifications-API-Data-Leakage.html	third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2020-24721?: CVE-2020-24721 has been scored as a medium severity vulnerability.
How to fix CVE-2020-24721?: To fix CVE-2020-24721, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-24721 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2020-24721 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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