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CVE-2022-20467: Android Security Bulletin—March 2023

In isBluetoothShareUri of BluetoothOppUtility.java, there is a possible incorrect file read due to a confused deputy. This could lead to local information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12L Android-13Android ID: A-225880741

CVE
#vulnerability#android#google#dos#java#rce#nokia#samsung#huawei#wifi

Published March 6, 2023 | Updated March 8, 2023

The Android Security Bulletin contains details of security vulnerabilities affecting Android devices. Security patch levels of 2023-03-05 or later address all of these issues. To learn how to check a device’s security patch level, see Check and update your Android version.

Android partners are notified of all issues at least a month before publication. Source code patches for these issues have been released to the Android Open Source Project (AOSP) repository and linked from this bulletin. This bulletin also includes links to patches outside of AOSP.

The most severe of these issues is a critical security vulnerability in the System component that could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation. The severity assessment is based on the effect that exploiting the vulnerability would possibly have on an affected device, assuming the platform and service mitigations are turned off for development purposes or if successfully bypassed.

Refer to the Android and Google Play Protect mitigations section for details on the Android security platform protections and Google Play Protect, which improve the security of the Android platform.

Android and Google service mitigations

This is a summary of the mitigations provided by the Android security platform and service protections such as Google Play Protect. These capabilities reduce the likelihood that security vulnerabilities could be successfully exploited on Android.

  • Exploitation for many issues on Android is made more difficult by enhancements in newer versions of the Android platform. We encourage all users to update to the latest version of Android where possible.
  • The Android security team actively monitors for abuse through Google Play Protect and warns users about Potentially Harmful Applications. Google Play Protect is enabled by default on devices with Google Mobile Services, and is especially important for users who install apps from outside of Google Play.

2023-03-01 security patch level vulnerability details

In the sections below, we provide details for each of the security vulnerabilities that apply to the 2023-03-01 patch level. Vulnerabilities are grouped under the component they affect. Issues are described in the tables below and include CVE ID, associated references, type of vulnerability, severity, and updated AOSP versions (where applicable). When available, we link the public change that addressed the issue to the bug ID, like the AOSP change list. When multiple changes relate to a single bug, additional references are linked to numbers following the bug ID. Devices with Android 10 and later may receive security updates as well as Google Play system updates.

Framework

The most severe vulnerability in this section could lead to local escalation of privilege after updating an app to a higher Target SDK with no additional execution privileges needed. User interaction is not needed for exploitation.

CVE

References

Type

Severity

Updated AOSP versions

CVE-2023-20906

A-221040577

EoP

High

11, 12, 12L, 13

CVE-2023-20911

A-242537498

EoP

High

11, 12, 12L, 13

CVE-2023-20917

A-242605257 [2]

EoP

High

11, 12, 12L, 13

CVE-2023-20947

A-237405974

EoP

High

12, 12L, 13

CVE-2023-20963

A-220302519

EoP

High

11, 12, 12L, 13

CVE-2023-20956

A-240140929

ID

High

12, 12L, 13

CVE-2023-20958

A-254803162

ID

High

13

CVE-2023-20964

A-238177121 [2]

DoS

High

12, 12L, 13

System

The most severe vulnerability in this section could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.

CVE

References

Type

Severity

Updated AOSP versions

CVE-2023-20951

A-258652631

RCE

Critical

11, 12, 12L, 13

CVE-2023-20954

A-261867748

RCE

Critical

11, 12, 12L, 13

CVE-2023-20926

A-253043058

EoP

High

12, 12L, 13

CVE-2023-20931

A-242535997

EoP

High

11, 12, 12L, 13

CVE-2023-20936

A-226927612

EoP

High

11, 12, 12L, 13

CVE-2023-20953

A-251778420

EoP

High

13

CVE-2023-20955

A-258653813

EoP

High

11, 12, 12L, 13

CVE-2023-20957

A-258422561

EoP

High

11, 12, 12L

CVE-2023-20959

A-249057848

EoP

High

13

CVE-2023-20960

A-250589026 [2] [3]

EoP

High

12L, 13

CVE-2023-20966

A-242299736

EoP

High

11, 12, 12L, 13

CVE-2022-4452

A-251802307

ID

High

13

CVE-2022-20467

A-225880741

ID

High

11, 12, 12L, 13

CVE-2023-20929

A-234442700

ID

High

13

CVE-2023-20952

A-186803518

ID

High

11, 12, 12L, 13

CVE-2023-20962

A-256590210

ID

High

13

CVE-2022-20499

A-246539931

DoS

High

12, 12L, 13

CVE-2023-20910

A-245299920

DoS

High

11, 12, 12L, 13

Google Play system updates

The following issues are included in Project Mainline components.

Subcomponent

CVE

Media Codecs

CVE-2023-20956

Permission Controller

CVE-2023-20947

Tethering

CVE-2023-20929

WiFi

CVE-2022-20499, CVE-2023-20910

2023-03-05 security patch level vulnerability details

In the sections below, we provide details for each of the security vulnerabilities that apply to the 2023-03-05 patch level. Vulnerabilities are grouped under the component they affect. Issues are described in the tables below and include CVE ID, associated references, type of vulnerability, severity, and updated AOSP versions (where applicable). When available, we link the public change that addressed the issue to the bug ID, like the AOSP change list. When multiple changes relate to a single bug, additional references are linked to numbers following the bug ID.

Kernel

The vulnerability in this section could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.

CVE

References

Type

Severity

Subcomponent

CVE-2021-33655

A-240019719
Upstream kernel [2] [3]

EoP

High

Frame Buffer

MediaTek components

These vulnerabilities affect MediaTek components and further details are available directly from MediaTek. The severity assessment of these issues is provided directly by MediaTek.

CVE

References

Severity

Subcomponent

CVE-2023-20620

A-264149248
M-ALPS07554558 *

High

adsp

CVE-2023-20621

A-264208866
M-ALPS07664755*

High

tinysys

CVE-2023-20623

A-264209787
M-ALPS07559778 *

High

ion

Unisoc components

These vulnerabilities affect Unisoc components and further details are available directly from Unisoc. The severity assessment of these issues is provided directly by Unisoc.

CVE

References

Severity

Subcomponent

CVE-2022-47459

A-264598465
U-2032124 *

High

Kernel

CVE-2022-47461

A-264834026
U-2066617 *

High

system

CVE-2022-47462

A-264834568
U-2066754 *

High

system

CVE-2022-47460

A-264831217
U-2044606 *

High

Kernel

Qualcomm components

These vulnerabilities affect Qualcomm components and are described in further detail in the appropriate Qualcomm security bulletin or security alert. The severity assessment of these issues is provided directly by Qualcomm.

CVE

References

Severity

Subcomponent

CVE-2022-22075

A-193434313
QC-CR#3129138
QC-CR#3112398 [2] [3]

High

Display

CVE-2022-40537

A-261468700
QC-CR#3278869 [2] [3] [4]

High

Bluetooth

CVE-2022-40540

A-261470730
QC-CR#3280498

High

Kernel

Qualcomm closed-source components

These vulnerabilities affect Qualcomm closed-source components and are described in further detail in the appropriate Qualcomm security bulletin or security alert. The severity assessment of these issues is provided directly by Qualcomm.

CVE

References

Severity

Subcomponent

CVE-2022-33213

A-238106224 *

Critical

Closed-source component

CVE-2022-33256

A-245402790 *

Critical

Closed-source component

CVE-2022-25655

A-261469326 *

High

Closed-source component

CVE-2022-25694

A-235102547 *

High

Closed-source component

CVE-2022-25705

A-235102507 *

High

Closed-source component

CVE-2022-25709

A-235102420 *

High

Closed-source component

CVE-2022-33242

A-245402503 *

High

Closed-source component

CVE-2022-33244

A-245402728 *

High

Closed-source component

CVE-2022-33250

A-245403450 *

High

Closed-source component

CVE-2022-33254

A-245403473 *

High

Closed-source component

CVE-2022-33272

A-245403311 *

High

Closed-source component

CVE-2022-33278

A-245402730 *

High

Closed-source component

CVE-2022-33309

A-261468683 *

High

Closed-source component

CVE-2022-40515

A-261469638 *

High

Closed-source component

CVE-2022-40527

A-261470448 *

High

Closed-source component

CVE-2022-40530

A-261471028 *

High

Closed-source component

CVE-2022-40531

A-261469091 *

High

Closed-source component

CVE-2022-40535

A-261470732 *

High

Closed-source component

Common questions and answers

This section answers common questions that may occur after reading this bulletin.

1. How do I determine if my device is updated to address these issues?

To learn how to check a device’s security patch level, see Check and update your Android version.

  • Security patch levels of 2023-03-01 or later address all issues associated with the 2023-03-01 security patch level.
  • Security patch levels of 2023-03-05 or later address all issues associated with the 2023-03-05 security patch level and all previous patch levels.

Device manufacturers that include these updates should set the patch string level to:

  • [ro.build.version.security_patch]:[2023-03-01]
  • [ro.build.version.security_patch]:[2023-03-05]

For some devices on Android 10 or later, the Google Play system update will have a date string that matches the 2023-03-01 security patch level. Please see this article for more details on how to install security updates.

2. Why does this bulletin have two security patch levels?

This bulletin has two security patch levels so that Android partners have the flexibility to fix a subset of vulnerabilities that are similar across all Android devices more quickly. Android partners are encouraged to fix all issues in this bulletin and use the latest security patch level.

  • Devices that use the 2023-03-01 security patch level must include all issues associated with that security patch level, as well as fixes for all issues reported in previous security bulletins.
  • Devices that use the security patch level of 2023-03-05 or newer must include all applicable patches in this (and previous) security bulletins.

Partners are encouraged to bundle the fixes for all issues they are addressing in a single update.

3. What do the entries in the Type column mean?

Entries in the Type column of the vulnerability details table reference the classification of the security vulnerability.

Abbreviation

Definition

RCE

Remote code execution

EoP

Elevation of privilege

ID

Information disclosure

DoS

Denial of service

N/A

Classification not available

4. What do the entries in the References column mean?

Entries under the References column of the vulnerability details table may contain a prefix identifying the organization to which the reference value belongs.

Prefix

Reference

A-

Android bug ID

QC-

Qualcomm reference number

M-

MediaTek reference number

N-

NVIDIA reference number

B-

Broadcom reference number

U-

UNISOC reference number

5. What does an * next to the Android bug ID in the References column mean?

Issues that are not publicly available have an * next to the corresponding reference ID. The update for that issue is generally contained in the latest binary drivers for Pixel devices available from the Google Developer site.

6. Why are security vulnerabilities split between this bulletin and device / partner security bulletins, such as the Pixel bulletin?

Security vulnerabilities that are documented in this security bulletin are required to declare the latest security patch level on Android devices. Additional security vulnerabilities that are documented in the device / partner security bulletins are not required for declaring a security patch level. Android device and chipset manufacturers may also publish security vulnerability details specific to their products, such as Google, Huawei, LGE, Motorola, Nokia, or Samsung.

Versions

Version

Date

Notes

1.0

March 6, 2023

Bulletin Published

1.1

March 8, 2023

Bulletin revised to include AOSP links

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