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AUSCERT External Security Bulletin Redistribution
ESB-2023.3824
Android Security Bulletin – July 2023
6 July 2023
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AusCERT Security Bulletin Summary
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Product: Android OS
Publisher: Android
Operating System: Android
Resolution: Patch/Upgrade
CVE Names: CVE-2023-28542 CVE-2023-28541 CVE-2023-28147
CVE-2023-26083 CVE-2023-25012 CVE-2023-24854
CVE-2023-24851 CVE-2023-22667 CVE-2023-22387
CVE-2023-22386 CVE-2023-21672 CVE-2023-21631
CVE-2023-21629 CVE-2023-21262 CVE-2023-21261
CVE-2023-21257 CVE-2023-21256 CVE-2023-21255
CVE-2023-21254 CVE-2023-21251 CVE-2023-21250
CVE-2023-21249 CVE-2023-21248 CVE-2023-21247
CVE-2023-21246 CVE-2023-21245 CVE-2023-21243
CVE-2023-21241 CVE-2023-21240 CVE-2023-21239
CVE-2023-21238 CVE-2023-21145 CVE-2023-21087
CVE-2023-20942 CVE-2023-20918 CVE-2023-20910
CVE-2023-20755 CVE-2023-20754 CVE-2023-2136
CVE-2022-42703 CVE-2022-28350 CVE-2021-29256
CVE-2021-0948
Original Bulletin:
https://source.android.com/docs/security/bulletin/2023-07-01
Comment: CVSS (Max): 9.8* CVE-2022-28350 (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
– ————————–BEGIN INCLUDED TEXT——————–
Android Security Bulletin-July 2023
Stay organized with collections Save and categorize content based on your
preferences.
Published July 5, 2023
The Android Security Bulletin contains details of security vulnerabilities
affecting Android devices. Security patch levels of 2023-07-05 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 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.
Note : Information on the latest over-the-air update (OTA) and firmware images
for Google devices is available in the July 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.
Note : There are indications that the following may be under limited, targeted
exploitation.
o CVE-2023-26083
o CVE-2021-29256
o CVE-2023-2136
2023-07-01 security patch level vulnerability details
In the sections below, we provide details for each of the security
vulnerabilities that apply to the 2023-07-01 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 allow possible elevation of
privilege due to a confused deputy with no additional execution privileges
needed. User interaction is not needed for exploitation.
CVE References Type Severity Updated AOSP versions
CVE-2023-20918 A-243794108 EoP High 11, 12, 12L, 13
CVE-2023-20942 A-258021433 EoP High 12, 12L, 13
CVE-2023-21145 A-265293293 EoP High 11, 12, 12L, 13
CVE-2023-21245 A-222446076 EoP High 11, 12, 12L, 13
CVE-2023-21251 A-204554636 EoP High 11, 12, 12L, 13
CVE-2023-21254 A-254736794 EoP High 13
CVE-2023-21257 A-257443065 EoP High 13
CVE-2023-21262 A-279905816 EoP High 12, 12L, 13
CVE-2023-21238 A-277740848 ID High 11, 12, 12L, 13
CVE-2023-21239 A-274592467 ID High 12, 12L, 13
CVE-2023-21249 A-217981062 ID High 13
CVE-2023-21087 A-261723753 DoS High 11, 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-2023-21250 A-261068592 RCE Critical 11, 12, 12L, 13
CVE-2023-2136 A-278113033 RCE High 13
CVE-2023-21241 A-271849189 EoP High 11, 12, 12L, 13
CVE-2023-21246 A-273729476 EoP High 11, 12, 12L, 13
CVE-2023-21247 A-277333781 EoP High 12, 12L, 13
CVE-2023-21248 A-277333746 EoP High 12, 12L, 13
CVE-2023-21256 A-268193384 EoP High 13
CVE-2023-21261 A-271680254 ID High 11, 12, 12L, 13
CVE-2023-20910 A-245299920 DoS High 11, 12, 12L, 13
CVE-2023-21240 A-275340417 DoS High 11, 12, 12L, 13
CVE-2023-21243 A-274445194 DoS High 11, 12, 12L, 13
Google Play system updates
The following issues are included in Project Mainline components.
Subcomponent CVE
WiFi CVE-2023-20910, CVE-2023-21240, CVE-2023-21243
2023-07-05 security patch level vulnerability details
In the sections below, we provide details for each of the security
vulnerabilities that apply to the 2023-07-05 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 in the kernel with no additional execution privileges needed. User
interaction is not needed for exploitation.
CVE References Type Severity Subcomponent
CVE-2022-42703 A-253167854 EoP High MemoryManagement
Upstream kernel
CVE-2023-21255 A-275041864 EoP High Binder
Upstream kernel
Kernel components
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 Subcomponent
CVE-2023-25012 A-268589017 EoP High HID
Upstream kernel [ 2 ] [ 3 ] [ 4 ]
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-2021-29256 A-283489460 * High Mali
CVE-2022-28350 A-226921651 * High Mali
CVE-2023-28147 A-274005916 * High Mali
CVE-2023-26083 A-272073598 * Moderate Mali
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-2021-0948 A-281905774 * 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-2023-20754 A-280380543 High keyinstall
M-ALPS07563028 *
CVE-2023-20755 A-280374982 High keyinstall
M-ALPS07510064 *
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-2023-21672 A-276751075 High Audio
QC-CR#3313322
CVE-2023-22386 A-276750584 High WLAN
QC-CR#3355665 [ 2 ]
CVE-2023-22387 A-276750306 High Kernel
QC-CR#3356023 [ 2 ] [ 3 ] [ 4 ]
CVE-2023-24851 A-276751076 High WLAN
QC-CR#3359589 [ 2 ] [ 3 ]
CVE-2023-24854 A-276750639 High WLAN
QC-CR#3366343 [ 2 ]
CVE-2023-28541 A-276750665 High WLAN
QC-CR#3144133
CVE-2023-28542 A-276750246 High WLAN
QC-CR#3104318
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-2023-21629 A-264414032 * Critical Closed-source component
CVE-2023-21631 A-264415234 * High Closed-source component
CVE-2023-22667 A-276750583 * 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 2023-07-01 or later address all issues associated
with the 2023-07-01 security patch level.
o Security patch levels of 2023-07-05 or later address all issues associated
with the 2023-07-05 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]:[2023-07-01] o [ro.build.version.security_patch]:[2023-07-05]
For some devices on Android 10 or later, the Google Play system update will
have a date string that matches the 2023-07-01 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 2023-07-01 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 2023-07-05 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 July 5, 2023 Bulletin published
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The University of Queensland
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