CVE-2020-24721
Google/Apple GAEN Protocol Private Framework Coercion
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.
INFO
Published Date :
Sept. 30, 2020, 6:15 p.m.
Last Modified :
Oct. 22, 2020, 4:16 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.2
Exploitability Score :
0.5
Affected Products
The following products are affected by CVE-2020-24721
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-24721.
| URL | Resource |
|---|---|
| http://packetstormsecurity.com/files/159419/Corona-Exposure-Notifications-API-Data-Leakage.html | Third Party Advisory VDB Entry |
| 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 | Mailing List Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-24721 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-24721 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Oct. 22, 2020
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:P/I:P/A:N) Added CVSS V3.1 NIST AV:P/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N Changed Reference Type http://packetstormsecurity.com/files/159419/Corona-Exposure-Notifications-API-Data-Leakage.html No Types Assigned http://packetstormsecurity.com/files/159419/Corona-Exposure-Notifications-API-Data-Leakage.html Third Party Advisory, VDB Entry Changed Reference Type https://blog.google/inside-google/company-announcements/update-exposure-notifications No Types Assigned https://blog.google/inside-google/company-announcements/update-exposure-notifications Vendor Advisory Changed Reference Type https://github.com/minvws/nl-covid19-notification-app-coordination/blob/master/CVEs/CVE-2020-24721.txt No Types Assigned https://github.com/minvws/nl-covid19-notification-app-coordination/blob/master/CVEs/CVE-2020-24721.txt Third Party Advisory Changed Reference Type https://seclists.org/fulldisclosure/2020/Sep/53 No Types Assigned https://seclists.org/fulldisclosure/2020/Sep/53 Mailing List, Third Party Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:apple:exposure_notifications:*:*:*:*:*:iphone_os:*:* versions up to (including) 1.5 *cpe:2.3:a:google:exposure_notifications:*:*:*:*:*:android:*:* versions up to (including) 1.5 -
CVE Modified by [email protected]
Oct. 07, 2020
Action Type Old Value New Value Changed Description An issue was discovered in the GAEN (aka Google Apple Encounter Notification) protocol through 2020-08-27, as used in Corona 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 dis-proving an encounter notification. 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. -
CVE Modified by [email protected]
Sep. 30, 2020
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/159419/Corona-Exposure-Notifications-API-Data-Leakage.html [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-24721 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-24721
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.12212
percentile