Headline
CVE-2023-21256: Android Security Bulletin—July 2023
In SettingsHomepageActivity.java, there is a possible way to launch arbitrary activities via Settings due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.
Published July 5, 2023 | Updated July 10, 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 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.
2023-07-01 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 [2] [3]
EoP
High
11, 12, 12L, 13
CVE-2023-20942
A-258021433 [2] [3]
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 [2]
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
Upstream kernel
EoP
High
MemoryManagement
CVE-2023-21255
A-275041864
Upstream kernel
EoP
High
Binder
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
Upstream kernel [2] [3] [4]
EoP
High
HID
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
M-ALPS07563028 *
High
keyinstall
CVE-2023-20755
A-280374982
M-ALPS07510064 *
High
keyinstall
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
QC-CR#3313322
High
Audio
CVE-2023-22386
A-276750584
QC-CR#3355665 [2]
High
WLAN
CVE-2023-22387
A-276750306
QC-CR#3356023 [2] [3] [4]
High
Kernel
CVE-2023-24851
A-276751076
QC-CR#3359589 [2] [3]
High
WLAN
CVE-2023-24854
A-276750639
QC-CR#3366343 [2]
High
WLAN
CVE-2023-28541
A-276750665
QC-CR#3144133
High
WLAN
CVE-2023-28542
A-276750246
QC-CR#3104318
High
WLAN
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.
- Security patch levels of 2023-07-01 or later address all issues associated with the 2023-07-01 security patch level.
- 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:
- [ro.build.version.security_patch]:[2023-07-01]
- [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.
- 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.
- 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
1.1
July 10, 2023
Bulletin revised to include AOSP links
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Categories: Exploits and vulnerabilities Categories: News Tags: Google Tags: Android Tags: 2023-07-05 Tags: CVE2021-29256 Tags: CVE-2023-26083 Tags: CVE-2023-2136 Tags: CVE-2023-21250 Tags: ARM Tags: Skia Google has patched 43 vulnerabilities in Android, three of which are actively exploited zero-day vulnerabilities. (Read more...) The post Update Android now! Google patches three actively exploited zero-days appeared first on Malwarebytes Labs.
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In display, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07978760; Issue ID: ALPS07363410.
In display, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07978760; Issue ID: ALPS07363410.
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Hello everyone! This episode will be about Microsoft Patch Tuesday for May 2023, including vulnerabilities that were added between April and May Patch Tuesdays. As usual, I use my open source Vulristics project to analyse and prioritize vulnerabilities. I took the comments about the vulnerabilities from the Qualys, Tenable, Rapid7, ZDI Patch Tuesday reviews. It’s been a […]
Red Hat Security Advisory 2023-2458-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include buffer overflow, bypass, denial of service, double free, memory leak, null pointer, out of bounds read, privilege escalation, traversal, and use-after-free vulnerabilities.
An update for kernel is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2021-26341: A flaw was found in hw. This issue can cause AMD CPUs to transiently execute beyond unconditional direct branches. * CVE-2021-33655: An out-of-bounds write flaw was found in the Linux kernel’s framebuffer-based console driver functionality in the way a user triggers ioctl FBIOPUT_VSCREENINFO with malicious data. This flaw allows a local user to c...
An update for kernel-rt is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2021-26341: A flaw was found in hw. This issue can cause AMD CPUs to transiently execute beyond unconditional direct branches. * CVE-2021-33655: An out-of-bounds write flaw was found in the Linux kernel’s framebuffer-based console driver functionality in the way a user triggers ioctl FBIOPUT_VSCREENINFO with malicious data. This flaw allows a local user t...
Debian Linux Security Advisory 5393-1 - Multiple security issues were discovered in Chromium, which could result in the execution of arbitrary code, denial of service or information disclosure.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added three security flaws to its Known Exploited Vulnerabilities (KEV) catalog, based on evidence of active exploitation. The three vulnerabilities are as follows - CVE-2023-28432 (CVSS score - 7.5) - MinIO Information Disclosure Vulnerability CVE-2023-27350 (CVSS score - 9.8) - PaperCut MF/NG Improper Access Control
Categories: News Tags: chrome Tags: browser Tags: update Tags: vulnerability Tags: CVE Tags: exploit Tags: exploitation Tags: zero-day Users of Chrome should ensure they're running the latest version to patch an integer overflow in the Skia graphics library. (Read more...) The post Update now, there's a Chrome zero-day in the wild appeared first on Malwarebytes Labs.
Ubuntu Security Notice 6033-1 - It was discovered that the Traffic-Control Index implementation in the Linux kernel did not properly perform filter deactivation in some situations. A local attacker could possibly use this to gain elevated privileges. Please note that with the fix for thisCVE, kernel support for the TCINDEX classifier has been removed. William Zhao discovered that the Traffic Control subsystem in the Linux kernel did not properly handle network packet retransmission in certain situations. A local attacker could use this to cause a denial of service.
In inflate of inflate.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12 Android-12L Android-13Android ID: A-242544249
Google on Tuesday rolled out emergency fixes to address another actively exploited high-severity zero-day flaw in its Chrome web browser. The flaw, tracked as CVE-2023-2136, is described as a case of integer overflow in Skia, an open source 2D graphics library. Clément Lecigne of Google's Threat Analysis Group (TAG) has been credited with discovering and reporting the flaw on April 12, 2023. "
Integer overflow in Skia in Google Chrome prior to 112.0.5615.137 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added five security flaws to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation in the wild. This includes three high-severity flaws in the Veritas Backup Exec Agent software (CVE-2021-27876, CVE-2021-27877, and CVE-2021-27878) that could lead to the execution of privileged commands
Memory leak vulnerability in Mali GPU Kernel Driver in Midgard GPU Kernel Driver all versions from r6p0 - r32p0, Bifrost GPU Kernel Driver all versions from r0p0 - r42p0, Valhall GPU Kernel Driver all versions from r19p0 - r42p0, and Avalon GPU Kernel Driver all versions from r41p0 - r42p0 allows a non-privileged user to make valid GPU processing operations that expose sensitive kernel metadata.
A number of zero-day vulnerabilities that were addressed last year were exploited by commercial spyware vendors to target Android and iOS devices, Google's Threat Analysis Group (TAG) has revealed. The two distinct campaigns were both limited and highly targeted, taking advantage of the patch gap between the release of a fix and when it was actually deployed on the targeted devices. "These
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
An update for kernel-rt is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-4378: A stack overflow flaw was found in the Linux kernel's SYSCTL subsystem in how a user changes certain kernel parameters and variables. This flaw allows a local user to crash or potentially escalate their privileges on the system. * CVE-2022-42703: A memory leak flaw with use-after-free capability was found in the Linux kernel. The VMA mm/rmap.c ...
In addAutomaticZenRule of ZenModeHelper.java, there is a possible persistent denial of service due to resource exhaustion. This could lead to local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12L Android-13Android ID: A-242537431
The Linux kernel through 6.1.9 has a Use-After-Free in bigben_remove in drivers/hid/hid-bigbenff.c via a crafted USB device because the LED controllers remain registered for too long.
Ubuntu Security Notice 5789-1 - It was discovered that the NFSD implementation in the Linux kernel did not properly handle some RPC messages, leading to a buffer overflow. A remote attacker could use this to cause a denial of service or possibly execute arbitrary code. Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading to potential data structure reuse. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.
Ubuntu Security Notice 5756-3 - Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading to potential data structure reuse. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a memory leak existed in the IPv6 implementation of the Linux kernel. A local attacker could use this to cause a denial of service.
Ubuntu Security Notice 5758-1 - Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading to potential data structure reuse. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the video4linux driver for Empia based TV cards in the Linux kernel did not properly perform reference counting in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.
Ubuntu Security Notice 5728-2 - Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading to potential data structure reuse. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a race condition existed in the memory address space accounting implementation in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.
Ubuntu Security Notice 5728-1 - Jann Horn discovered that the Linux kernel did not properly track memory allocations for anonymous VMA mappings in some situations, leading to potential data structure reuse. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a race condition existed in the memory address space accounting implementation in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.
mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.