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AUSCERT External Security Bulletin Redistribution
ESB-2023.2453
Android Security Bulletin - May 2023
2 May 2023
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AusCERT Security Bulletin Summary
---------------------------------
Product: Android OS
Publisher: Google
Operating System: Android
Resolution: Patch/Upgrade
CVE Names: CVE-2023-26085 CVE-2023-21666 CVE-2023-21665
CVE-2023-21118 CVE-2023-21117 CVE-2023-21116
CVE-2023-21112 CVE-2023-21111 CVE-2023-21110
CVE-2023-21109 CVE-2023-21107 CVE-2023-21106
CVE-2023-21104 CVE-2023-21103 CVE-2023-21102
CVE-2023-20993 CVE-2023-20930 CVE-2023-20914
CVE-2023-20726 CVE-2023-20699 CVE-2023-20698
CVE-2023-20697 CVE-2023-20696 CVE-2023-20695
CVE-2023-20694 CVE-2023-0266 CVE-2022-47488
CVE-2022-47487 CVE-2022-47486 CVE-2022-47470
CVE-2022-47469 CVE-2022-46891 CVE-2022-46396
CVE-2022-46395 CVE-2022-40508 CVE-2022-40504
CVE-2022-34144 CVE-2022-33305 CVE-2022-33273
CVE-2022-25713 CVE-2022-20444 CVE-2022-20338
CVE-2022-4639 CVE-2021-39617 CVE-2021-0877
Original Bulletin:
https://source.android.com/docs/security/bulletin/2023-05-01
Comment: CVSS (Max): 9.8* CVE-2022-4639 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVSS Source: NVD
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
* Not all CVSS available when published
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Android Security Bulletin-May 2023
Stay organized with collections Save and categorize content based on your
preferences.
Published May 1, 2023
The Android Security Bulletin contains details of security vulnerabilities
affecting Android devices. Security patch levels of 2023-05-05 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 will be released to the
Android Open Source Project (AOSP) repository in the next 48 hours. We will
revise this bulletin with the AOSP links when they are available.
The most severe of these issues is a high security vulnerability in the
Framework component that could lead to local escalation of privilege with no
additional execution privileges needed. User interaction is 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.
Note : Information on the latest over-the-air update (OTA) and firmware images
for Google devices is available in the May 2023 Pixel Update Bulletin .
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.
o 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.
o 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.
2023-05-01 security patch level vulnerability details
In the sections below, we provide details for each of the security
vulnerabilities that apply to the 2023-05-01 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 with no additional execution privileges needed. User interaction is
needed for exploitation.
CVE References Type Severity Updated AOSP versions
CVE-2021-39617 A-175190844 EoP High 11, 12, 12L
CVE-2022-20338 A-171966843 EoP High 11, 12, 12L
CVE-2023-20993 A-261588851 EoP High 11, 12, 12L, 13
CVE-2023-21109 A-261589597 EoP High 11, 12, 12L, 13
CVE-2023-21117 A-263358101 EoP High 13
CVE-2023-20914 A-189942529 ID High 11
CVE-2023-21104 A-259938771 ID High 12L, 13
CVE-2023-20930 A-250576066 DoS High 11, 12, 12L, 13
CVE-2023-21116 A-256202273 EoP Moderate 11, 12, 12L, 13
Frameworks
The vulnerability in this section could lead to local escalation of privilege
with no additional execution privileges needed. User interaction is not needed
for exploitation.
CVE References Type Severity Updated AOSP versions
CVE-2023-21110 A-258422365 EoP High 11, 12, 12L, 13
System
The most severe vulnerability in this section could lead to local escalation of
privilege with no additional execution privileges needed. User interaction is
not needed for exploitation.
CVE References Type Severity Updated AOSP versions
CVE-2022-20444 A-197296414 EoP High 11, 12
CVE-2023-21107 A-259385017 EoP High 11, 12, 12L, 13
CVE-2023-21112 A-252763983 ID High 11, 12, 12L, 13
CVE-2023-21118 A-269014004 ID High 11, 12, 12L, 13
CVE-2023-21103 A-259064622 DoS High 11, 12, 12L, 13
CVE-2023-21111 A-256819769 DoS High 11, 12, 12L, 13
Google Play system updates
The following issues are included in Project Mainline components.
Subcomponent CVE
Permission Controller CVE-2021-39617, CVE-2023-20914
2023-05-05 security patch level vulnerability details
In the sections below, we provide details for each of the security
vulnerabilities that apply to the 2023-05-05 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 most severe vulnerability in this section could lead to local escalation of
privilege with no additional execution privileges needed. User interaction is
not needed for exploitation.
CVE References Type Severity Subcomponent
CVE-2023-21102 A-260821414 EoP High EFI
Upstream kernel [ 2 ]
CVE-2023-21106 A-265016072 EoP High GPU
Upstream kernel
Kernel components
The vulnerability in this section could lead to local escalation of privilege
with System execution privileges needed. User interaction is not needed for
exploitation.
CVE References Type Severity Subcomponent
CVE-2023-0266 A-265303544 EoP Moderate Kernel
Upstream kernel
Kernel LTS
The following kernel versions have been updated. Kernel version updates are
dependent on the version of Android OS at the time of device launch.
References Android Launch Version Kernel Launch Version Minimum Launch Version
A-239830686 12 5.10 5.10.136
A-239977583 12 5.4 5.4.210
A-239978386 11 5.4 5.4.210
A-251538603 13 5.10 5.10.136
A-251540658 13 5.15 5.15.72
Arm components
These vulnerabilities affect Arm components and further details are available
directly from Arm. The severity assessment of these issues is provided directly
by Arm.
CVE References Severity Subcomponent
CVE-2022-4639 A-267360595 * High Mali
CVE-2022-46395 A-267357916 * High Mali
CVE-2022-46396 A-259984805 * High Mali
CVE-2022-46891 A-260149319 * High Mali
CVE-2023-26085 A-261701167 * High Arm NNAPI Driver
Imagination Technologies
This vulnerability affects Imagination Technologies components and further
details are available directly from Imagination Technologies. The severity
assessment of this issue is provided directly by Imagination Technologies.
CVE References Severity Subcomponent
CVE-2021-0877 A-273754094 * High PowerVR-GPU
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-2023-20694 A-271785766 High preloader
M-ALPS07733998 *
CVE-2023-20695 A-271788841 High preloader
M-ALPS07734012 *
CVE-2023-20696 A-271788842 High preloader
M-ALPS07856356 *
CVE-2023-20699 A-271788844 High adsp
M-ALPS07696073 *
CVE-2023-20697 A-271785768 High keyinstall
M-ALPS07589148 *
CVE-2023-20698 A-271785769 High keyinstall
M-ALPS07589144 *
CVE-2023-20726 A-271785764 High mnld
M-ALPS07735968 *
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-2022-47469 A-273383823 High Kernel
U-2143205 *
CVE-2022-47470 A-273397872 High Kernel
U-2143207 *
CVE-2022-47486 A-273401256 High Kernel
U-2143210 *
CVE-2022-47487 A-273397882 High Android
U-2079517 *
CVE-2022-47488 A-273409059 High Kernel
U-2064944 *
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-2023-21665 A-271879598 High Display
QC-CR#3400722
CVE-2023-21666 A-271879644 High Display
QC-CR#3400780
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-2022-25713 A-258057293 * High Closed-source component
CVE-2022-33273 A-258057450 * High Closed-source component
CVE-2022-33305 A-258057367 * High Closed-source component
CVE-2022-34144 A-258057329 * High Closed-source component
CVE-2022-40504 A-258057235 * High Closed-source component
CVE-2022-40508 A-258057197 * 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 .
o Security patch levels of 2023-05-01 or later address all issues associated
with the 2023-05-01 security patch level.
o Security patch levels of 2023-05-05 or later address all issues associated
with the 2023-05-05 security patch level and all previous patch levels.
Device manufacturers that include these updates should set the patch string
level to:
o [ro.build.version.security_patch]:[2023-05-01]
o [ro.build.version.security_patch]:[2023-05-05]
For some devices on Android 10 or later, the Google Play system update will
have a date string that matches the 2023-05-01 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.
o Devices that use the 2023-05-01 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.
o Devices that use the security patch level of 2023-05-05 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 May 1, 2023 Bulletin Published
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