Vulnerability CVE-2021-33838
Published: 2021-06-04

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.

Type:

CWE-200

 (Information Exposure)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Luca-app -> LUCA 

 References:
https://www.ccc.de/de/updates/2021/luca-app-ccc-fordert-bundesnotbremse
https://github.com/mame82/misc/blob/master/luca_traceIds.md
https://www.youtube.com/playlist?list=PLKuX6iczGb3kuDsm2RFgbmRkTugkR9-UE
https://luca-app.de/securityoverview/properties/objectives.html
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