CVE-2021-0520

In several functions of MemoryFileSystem.cpp and related files, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-10Android ID: A-176237595

CVSS v3 7.0 HIGH
CVSS v2.0 4.4 MEDIUM

7.0^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.0 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.4^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.4 / Impact : 6.4

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://source.android.com/security/bulletin/2021-06-01	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:google:android:10.0:::::::*
	cpe:2.3:o:google:android:11.0:::::::*

History

23 Jun 2021, 17:43

Type	Values Removed	Values Added
CPE		cpe:2.3:o:google:android:10.0:::::::* cpe:2.3:o:google:android:11.0:::::::*
CWE		CWE-362 CWE-416
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 4.4 v3 : 7.0
References	~~(MISC) https://source.android.com/security/bulletin/2021-06-01 -~~	(MISC) https://source.android.com/security/bulletin/2021-06-01 - Patch, Vendor Advisory

21 Jun 2021, 17:35

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-06-21 17:15

Updated : 2023-12-10 13:55

NVD link : CVE-2021-0520

Mitre link : CVE-2021-0520

CVE.ORG link : CVE-2021-0520

JSON object : View

Products Affected

google

android

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-416

Use After Free

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