CVE-2021-39697

In checkFileUriDestination of DownloadProvider.java, there is a possible way to bypass external storage private directories protection due to a missing permission check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12Android ID: A-200813547

CVSS v3 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

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

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://source.android.com/security/bulletin/2022-03-01	Patch Vendor Advisory
https://source.android.com/security/bulletin/2022-03-01	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:google:android:11.0:::::::*
	cpe:2.3:o:google:android:12.0:::::::*

History

21 Nov 2024, 06:20

Type	Values Removed	Values Added
References	~~() https://source.android.com/security/bulletin/2022-03-01 - Patch, Vendor Advisory~~	() https://source.android.com/security/bulletin/2022-03-01 - Patch, Vendor Advisory

Information

Published : 2022-03-16 15:15

Updated : 2024-11-21 06:20

NVD link : CVE-2021-39697

Mitre link : CVE-2021-39697

CVE.ORG link : CVE-2021-39697

JSON object : View

Products Affected

google

android

CWE

CWE-862

Missing Authorization

{"id": "CVE-2021-39697", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.2, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2022-03-16T15:15:10.713", "references": [{"url": "https://source.android.com/security/bulletin/2022-03-01", "tags": ["Patch", "Vendor Advisory"], "source": "security@android.com"}, {"url": "https://source.android.com/security/bulletin/2022-03-01", "tags": ["Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-862"}]}], "descriptions": [{"lang": "en", "value": "In checkFileUriDestination of DownloadProvider.java, there is a possible way to bypass external storage private directories protection due to a missing permission check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12Android ID: A-200813547"}, {"lang": "es", "value": "En la funci\u00f3n checkFileUriDestination del archivo DownloadProvider.java, se presenta una posible forma de omitir la protecci\u00f3n de los directorios privados de almacenamiento externo debido a una falta de comprobaci\u00f3n de permisos. Esto podr\u00eda conllevar a una escalada local de privilegios con los privilegios de ejecuci\u00f3n User necesarios. No es requerida una interacci\u00f3n del usuario para su explotaci\u00f3n. Producto: Android, Versiones: Android-11 Android-12, ID de Android: A-200813547"}], "lastModified": "2024-11-21T06:20:02.160", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:google:android:11.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "109DD7FD-3A48-4C3D-8E1A-4433B98E1E64"}, {"criteria": "cpe:2.3:o:google:android:12.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F8FB8EE9-FC56-4D5E-AE55-A5967634740C"}], "operator": "OR"}]}], "sourceIdentifier": "security@android.com"}