Google releases January 2021 Android Security Bulletin and Google Device Images

The most severe of these issues is a critical security vulnerability in the System component

Google has released the January 2021 Android Security Bulletin, giving carriers and device makers a fresh set of patches to install. Though Google puts out the Android security patches each month, the job of actually getting the fixes to end users falls on the telcos and/or device manufacturers themselves. Those partners vary in their ability to release the patches in a timely fashion.

The January 2021 bulletin has two security patch levels to provide Android partners with the flexibility to more quickly fix a subset of vulnerabilities that are similar across all Android devices.

  • 01-01-2021: Partial security patch level string. This security patch level string indicates that all issues associated with 01-01-2021 (and all previous security patch level strings) are addressed.
  • 05-01-2021: Complete security patch level string. This security patch level address all issues associated with the 05-01-2021 security patch level and all previous patch levels.

The most severe of these issues is a critical security vulnerability in the System component that could enable a remote attacker using a specially crafted transmission to execute arbitrary code within the context of a privileged process. 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.

Alongside the bulletin, Google have released a security update to Google devices through an over-the-air (OTA) update. The Google device firmware images have also been released to the Google Developer site. Security patch levels of January 5, 2021 or later address all of these issues.

The tables below contains a list of security vulnerabilities, the Common Vulnerability and Exposures ID (CVE), the assessed severity, and whether or not Google devices are affected. 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 disabled for development purposes or if successfully bypassed.

Android and Google Service Mitigation’s

This is a summary of the mitigation’s 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. All users are encouraged 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.
  • Android 10 introduces Google Play system updates (Project Mainline) which expedites how updates can be delivered to Android devices with Google Mobile Services. The Android Security Bulletin identifies security issues which are remediated through Google Play system updates

Terminology

You will find different types of vulnerabilities listed. Possible types include:

  • RCE – Remote code execution
  • EoP – Elevation of privilege
  • ID – Information disclosure
  • DoS – Denial of service
  • N/A – Classification not available

01-01-2021 security patch level—Vulnerability details

Framework

The most severe vulnerability in this section could enable a remote attacker using a specially crafted string to cause a permanent denial of service.

CVEReferencesTypeSeverityUpdated AOSP versions
CVE-2021-0313A-170968514DoSCritical8.0, 8.1, 9, 10, 11
CVE-2021-0303A-170407229EoPHigh11
CVE-2021-0306A-154505240EoPHigh8.0, 8.1, 9, 10, 11
CVE-2021-0307A-155648771EoPHigh10, 11
CVE-2021-0310A-170212632EoPHigh11
CVE-2021-0315A-169763814EoPHigh8.0, 8.1, 9, 10, 11
CVE-2021-0317A-168319670EoPHigh8.0, 8.1, 9, 10, 11
CVE-2021-0318A-168211968EoPHigh8.1, 9, 10, 11
CVE-2021-0319A-167244818EoPHigh8.0, 8.1, 9, 10, 11
CVE-2021-0304A-162738636IDHigh8.0, 8.1, 9, 10
CVE-2021-0309A-158480899IDHigh8.0, 8.1, 9, 10, 11
CVE-2021-0321A-166667403IDHigh11
CVE-2021-0322A-159145361IDHigh9, 10, 11
CVE-2019-9376A-129287265DoSHigh8.0, 8.1, 9
CVE-2020-15999A-171232105RCEModerate8.0, 8.1, 9, 10, 11

Media Framework

The most severe vulnerability in this section could enable a remote attacker using a specially crafted file to execute arbitrary code within the context of a privileged process.

CVEReferencesTypeSeverityUpdated AOSP versions
CVE-2016-6328A-162602132RCEHigh8.0, 8.1, 9, 10, 11
CVE-2021-0311A-170240631IDHigh8.0, 8.1, 9, 10, 11
CVE-2021-0312A-170583712IDHigh8.0, 8.1, 9, 10, 11

System

The most severe vulnerability in this section could enable a remote attacker using a specially crafted transmission to execute arbitrary code within the context of a privileged process.

CVEReferencesTypeSeverityUpdated AOSP versions
CVE-2021-0316A-168802990RCECritical8.0, 8.1, 9, 10, 11
CVE-2020-0471A-169327567EoPHigh8.0, 8.1, 9, 10, 11
CVE-2021-0308A-158063095EoPHigh8.0, 8.1, 9, 10, 11
CVE-2021-0320A-169933423IDHigh10, 11

Google Play system updates

The following issues are included in Project Mainline components.

ComponentCVE
Media Framework componentsCVE-2021-0311, CVE-2021-0312

05-01-2021 security patch level—Vulnerability details

Kernel components

The most severe vulnerability in this section could enable a local malicious application to bypass operating system protections that isolate application data from other applications.

CVEReferencesTypeSeverityComponent
CVE-2020-10732A-170658976
Upstream kernel
IDHighELF core dumps
CVE-2020-10766A-169505740
Upstream kernel
IDHighSpeculative execution
CVE-2021-0323A-156766097
Upstream kernel
IDHighLinux kernel

MediaTek components

This vulnerability affects MediaTek components and further details are available directly from MediaTek. The severity assessment of this issue is provided directly by MediaTek.

CVEReferencesSeverityComponent
CVE-2021-0301A-172514667
M-ALPS05342361
Highged

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.

CVEReferencesSeverityComponent
CVE-2020-11233A-170138863
QC-CR#2257789
HighKernel
CVE-2020-11239A-168722551
QC-CR#2744826
HighDisplay
CVE-2020-11240A-170138526
QC-CR#2702760
HighCamera
CVE-2020-11250A-170139097
QC-CR#2734543
HighAudio
CVE-2020-11261A-161373974
QC-CR#2742124
HighDisplay
CVE-2020-11262A-170138789
QC-CR#2742711
HighDisplay

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.

CVEReferencesSeverityComponent
CVE-2020-11134A-170138862CriticalClosed-source component
CVE-2020-11182A-168722721CriticalClosed-source component
CVE-2020-11126A-170139227HighClosed-source component
CVE-2020-11159A-170138666HighClosed-source component
CVE-2020-11181A-168051034HighClosed-source component
CVE-2020-11235A-170138866HighClosed-source component
CVE-2020-11238A-170139099HighClosed-source component
CVE-2020-11241A-170139229HighClosed-source component
CVE-2020-11260A-168918332HighClosed-source component

Full details of the January 2021 Android Security Bulletin are available here.

Rapid Mobile

Rapid Mobile uses cookies, tokens, and other third party scripts to recognise visitors of our sites and services, remember your settings and privacy choices, and - depending on your settings and privacy choices - enable us and some key partners to collect information about you so that we can improve our services and deliver relevant ads.

 

By continuing to use our site or clicking I Accept, you agree that Rapid Mobile and our key partners may collect data and use cookies for personalised ads and other purposes, as described more fully in our privacy policy.

 

You can change your settings at any time by clicking Manage Settings or by visiting our Privacy Centre for more detailed information.

 

Privacy Settings saved!
Cookie Services

When you visit any website, it may store or retrieve information on your browser, mostly in the form of cookies.Because we respect your right to privacy, you can choose not to allow some types of cookies. Click on the different category headings to find out more and change our default settings. However, blocking some types of cookies may impact your experience of the site and the services we are able to offer.

These cookies allow us to count visits and traffic sources, so we can measure and improve the performance of our site.

We track anonymized user information to improve our website.
  • _ga
  • _gid
  • _gat

Decline all Services
Accept all Services