CVE-2021-39806

In closef of label_backends_android.c, there is a possible way to corrupt memory due to a double free. This could lead to local escalation of privilege during startup of servicemanager, if an attacker can trigger an initialization failure, with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12LAndroid ID: A-215387420

CVSS v3 7.8 HIGH
CVSS v2.0 4.6 MEDIUM

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

4.6^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://source.android.com/security/bulletin/pixel/2022-06-01	Vendor Advisory
https://source.android.com/security/bulletin/pixel/2022-06-01	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:google:android:12.1:*:*:*:*:*:*:*

History

21 Nov 2024, 06:20

Type	Values Removed	Values Added
References	~~() https://source.android.com/security/bulletin/pixel/2022-06-01 - Vendor Advisory~~	() https://source.android.com/security/bulletin/pixel/2022-06-01 - Vendor Advisory

Information

Published : 2022-06-15 14:15

Updated : 2024-11-21 06:20

NVD link : CVE-2021-39806

Mitre link : CVE-2021-39806

CVE.ORG link : CVE-2021-39806

JSON object : View

Products Affected

google

android

CWE

CWE-415

Double Free

{"id": "CVE-2021-39806", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.6, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "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": "2022-06-15T14:15:11.060", "references": [{"url": "https://source.android.com/security/bulletin/pixel/2022-06-01", "tags": ["Vendor Advisory"], "source": "security@android.com"}, {"url": "https://source.android.com/security/bulletin/pixel/2022-06-01", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-415"}]}], "descriptions": [{"lang": "en", "value": "In closef of label_backends_android.c, there is a possible way to corrupt memory due to a double free. This could lead to local escalation of privilege during startup of servicemanager, if an attacker can trigger an initialization failure, with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12LAndroid ID: A-215387420"}, {"lang": "es", "value": "En la funci\u00f3n closef del archivo label_backends_android.c, se presenta una posible forma de corromper la memoria debido a una doble liberaci\u00f3n. Esto podr\u00eda conllevar a una escalada local de privilegios durante el inicio de servicemanager, si un atacante puede desencadenar un fallo de inicializaci\u00f3n, sin ser necesarios privilegios de ejecuci\u00f3n adicionales. No es requerida una interacci\u00f3n del usuario para su explotaci\u00f3n. Producto: Android, Versiones: Android-12L, ID de Android: A-215387420"}], "lastModified": "2024-11-21T06:20:16.477", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:google:android:12.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C64C1583-CDE0-4C1F-BDE6-05643C1BDD72"}], "operator": "OR"}]}], "sourceIdentifier": "security@android.com"}