Vulnerability in Bluezone
CVE-2020-12270
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 contact history obtained from the device of this recipient, or this recipient is not actually part of the contact history obtained from the device of an F0)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.014 (72.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
- Bluezone — versions 1.0.0
Weakness classification (CWE)
References
- github.com/BluezoneGlobal/bluezone-app/blob/afa15fcec391f0edc51d0486a4ca84dd252… (Third Party Advisory, Release Notes)
- github.com/BluezoneGlobal/bluezone-app/blob/afa15fcec391f0edc51d0486a4ca84dd252… (Third Party Advisory)
- github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50… (Third Party Advisory)
- github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50… (Third Party Advisory)
- vnhacker.blogspot.com/2020/04/vietnams-contact-tracing-app_26.html (Exploit, Third Party Advisory)
- github.com/BluezoneGlobal/react-native-bluetooth-scan/blob/d9ee70fd594093a30e50… (Third Party Advisory)
- bluezone.ai/CVE
Frequently asked questions
- What is CVE-2020-12270?
- CVE-2020-12270 is a medium-severity vulnerability in Bluezone, classified under Use of Insufficiently Random Values. CVSS score: 6.5/10. Published 2020-04-27.
- How severe is CVE-2020-12270?
- Medium severity. CVSS v3 base score is 6.5 out of 10.