CVEvulnerability
CVE-2021-33838
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-06-04
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-203
Description
Luca through 1.7.4 on Android allows remote attackers to obtain sensitive information about COVID-19 tracking because requests related to Check-In State occur shortly after requests for Phone Number Registration.
Affected configurations
• luca-app luca (<= 1.7.4)
Related
Weakness · CWE (1)
- CWE-203 Observable Discrepancy weakness
References
- https://github.com/mame82/misc/blob/master/luca_traceIds.md Third Party Advisory
- https://luca-app.de/securityoverview/properties/objectives.html Vendor Advisory
- https://www.ccc.de/de/updates/2021/luca-app-ccc-fordert-bundesnotbremse Third Party Advisory
- https://www.youtube.com/playlist?list=PLKuX6iczGb3kuDsm2RFgbmRkTugkR9-UE Exploit, Third Party Advisory
- https://github.com/mame82/misc/blob/master/luca_traceIds.md Third Party Advisory
- https://luca-app.de/securityoverview/properties/objectives.html Vendor Advisory
- https://www.ccc.de/de/updates/2021/luca-app-ccc-fordert-bundesnotbremse Third Party Advisory
- https://www.youtube.com/playlist?list=PLKuX6iczGb3kuDsm2RFgbmRkTugkR9-UE Exploit, Third Party Advisory