CVE-2020-12270 — React Native Bluetooth Scan in Bluezone 1

React Native Bluetooth Scan in Bluezone 1.0.0 uses six-character alphanumeric IDs, which might make it easier for remote attackers to interfere with COVID-19 contact tracing by using many IDs. NOTE: the vendor disputes the relevance of this report because the recipient of an F1 a

01What is this vulnerability?

React Native Bluetooth Scan in Bluezone 1.0.0 uses six-character alphanumeric IDs, which might make it easier for remote attackers to interfere with COVID-19 contact tracing by using many IDs. NOTE: the vendor disputes the relevance of this report because the recipient of an F1 alert will know it was a false alert if contact-history comparison fails (i.e., an F0 is not actually part of the…

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-04-27T03:26:40.000Z
• Last modified: 2024-08-04T11:48:58.318Z

09References

• github.com — https://github.com/BluezoneGlobal/bluezone-app/blob/afa15fcec391f0edc51d0486a4ca…
• github.com — https://github.com/BluezoneGlobal/bluezone-app/blob/afa15fcec391f0edc51d0486a4ca…
• github.com — https://github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd59409…
• github.com — https://github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd59409…
• vnhacker.blogspot.com — https://vnhacker.blogspot.com/2020/04/vietnams-contact-tracing-app_26.html
• github.com — https://github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd59409…
• bluezone.ai — https://bluezone.ai/CVE