CVE-2021-39686

CVSS V2 Medium 6.9 CVSS V3 High 7

Description

In several functions of binder.c, there is a possible way to represent the wrong domain to SELinux 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 kernelAndroid ID: A-200688826References: Upstream kernel

Overview

CVE ID
CVE-2021-39686

Assigner
security@android.com

Vulnerability Status
Analyzed

Published Version
2022-03-16T15:15:10

Last Modified Date
2022-07-12T17:42:04

Weakness Enumerations

CWE	URL
CWE-362	http://cwe.mitre.org/data/definitions/362.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:o:google:android:-:::::::*	1	OR

CVSS Version 2

Version
2.0

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

Access Vector
LOCAL

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
6.9

Severity
MEDIUM

Exploitability Score
3.4

Impact Score
10

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL

Attack Compatibility
HIGH

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
7

Base Severity
HIGH

Exploitability Score
1

Impact Score
5.9

References

Reference URL	Reference Tags
https://source.android.com/security/bulletin/2022-03-01	Patch Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-39686
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39686

History

Created	Old Value	New Value	Data Type	Notes
2022-04-04 00:42:42				Added to TrackCVE
2022-12-06 12:29:53	2022-03-16T15:15Z	2022-03-16T15:15:10	CVE Published Date	updated
2022-12-06 12:29:53		2022-07-12T17:42:04	CVE Modified Date	updated
2022-12-06 12:29:53		Analyzed	Vulnerability Status	updated