CVE-2021-33839

Luca through 1.7.4 on Android allows remote attackers to obtain sensitive information about COVID-19 tracking because the QR code of a Public Location can be intentionally confused with the QR code of a Private Meeting.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : 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://github.com/mame82/misc/blob/master/luca_traceIds.md	Third Party Advisory
https://luca-app.de/securityoverview/properties/objectives.html	Vendor Advisory
https://twitter.com/patrick_hennig/status/1387738281757061125	Third Party Advisory
https://youtu.be/jWyDfEB0m08	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2021-06-04 00:15

Updated : 2021-06-07 18:08

NVD link : CVE-2021-33839

Mitre link : CVE-2021-33839

CVE.ORG link : CVE-2021-33839

JSON object : View

Products Affected

luca-app

luca

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

{"id": "CVE-2021-33839", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"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"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"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}]}, "published": "2021-06-04T00:15:07.377", "references": [{"url": "https://github.com/mame82/misc/blob/master/luca_traceIds.md", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://luca-app.de/securityoverview/properties/objectives.html", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://twitter.com/patrick_hennig/status/1387738281757061125", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://youtu.be/jWyDfEB0m08", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-200"}]}], "descriptions": [{"lang": "en", "value": "Luca through 1.7.4 on Android allows remote attackers to obtain sensitive information about COVID-19 tracking because the QR code of a Public Location can be intentionally confused with the QR code of a Private Meeting."}, {"lang": "es", "value": "Luca a trav\u00e9s de la versi\u00f3n 1.7.4 en Android permite a los atacantes remotos obtener informaci\u00f3n sensible sobre el seguimiento de COVID-19 porque el c\u00f3digo QR de una Ubicaci\u00f3n P\u00fablica puede ser confundido intencionalmente con el c\u00f3digo QR de una Reuni\u00f3n Privada"}], "lastModified": "2021-06-07T18:08:25.837", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:luca-app:luca:*:*:*:*:*:android:*:*", "vulnerable": true, "matchCriteriaId": "B1F90DF1-4F29-4F8F-9C8C-239D7B774FAD", "versionEndIncluding": "1.7.4"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}