CVE-2021-33838

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.

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

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

Advertisement

Configurations

Configuration 1 (hide)

cpe:2.3:a:luca-app:luca:*:*:*:*:*:android:*:*

Information

Published : 2021-06-03 17:15

Updated : 2021-06-07 11:31

NVD link : CVE-2021-33838

Mitre link : CVE-2021-33838

JSON object : View

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

Advertisement

Products Affected

luca-app

luca

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://www.ccc.de/de/updates/2021/luca-app-ccc-fordert-bundesnotbremse", "name": "https://www.ccc.de/de/updates/2021/luca-app-ccc-fordert-bundesnotbremse", "tags": ["Third Party Advisory"], "refsource": "MISC"}, {"url": "https://github.com/mame82/misc/blob/master/luca_traceIds.md", "name": "https://github.com/mame82/misc/blob/master/luca_traceIds.md", "tags": ["Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.youtube.com/playlist?list=PLKuX6iczGb3kuDsm2RFgbmRkTugkR9-UE", "name": "https://www.youtube.com/playlist?list=PLKuX6iczGb3kuDsm2RFgbmRkTugkR9-UE", "tags": ["Exploit", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://luca-app.de/securityoverview/properties/objectives.html", "name": "https://luca-app.de/securityoverview/properties/objectives.html", "tags": ["Vendor Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-200"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-33838", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}}, "publishedDate": "2021-06-04T00:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:luca-app:luca:*:*:*:*:*:android:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "1.7.4"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-06-07T18:31Z"}