CVE-2021-31815

Public Exploit

Description

GAEN (aka Google/Apple Exposure Notifications) through 2021-04-27 on Android allows attackers to obtain sensitive information, such as a user's location history, in-person social graph, and (sometimes) COVID-19 infection status, because Rolling Proximity Identifiers and MAC addresses are written to the Android system log, and many Android devices have applications (preinstalled by the hardware manufacturer or network operator) that read system log data and send it to third parties. NOTE: a news outlet (The Markup) states that they received a vendor response indicating that fix deployment "began several weeks ago and will be complete in the coming days."

Category

3.3
CVSS
Severity: Low
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.01%
Third-Party Advisory appcensus.io Third-Party Advisory themarkup.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://themarkup.org/privacy/2021/04/27/google-promised-its-contact-tracing-app-was-completely-private-but-it-wasnt press/media coverage exploit third party advisory
https://blog.appcensus.io/2021/04/27/why-google-should-stop-logging-contact-tracing-data/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-31815?
CVE-2021-31815 has been scored as a low severity vulnerability.
How to fix CVE-2021-31815?
To fix CVE-2021-31815, 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-2021-31815 being actively exploited in the wild?
It is possible that CVE-2021-31815 is being exploited or will be exploited in a near future based on public information. 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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