Unprivileged context A typical execution environment expected by unprivileged code. Trusted computing base TCB Functionality that's part of the kernel, runs in the same CPU context as the kernel such as device drivers , has direct access to kernel memory such as hardware components on the device , has the capability to load scripts into a kernel component for example, eBPF , the communication processors, or is one of a handful of user services that is considered kernel equivalent: apexd , bpfloader , init , ueventd , and vold.
Bootloader Chain A component that configures the device on boot and then passes control to the Android OS. This includes the Titan-M chip present in some Pixel devices. Severity The severity of a bug generally reflects the potential harm that could occur if a bug was successfully exploited.
Rating modifiers While the severity of security vulnerabilities is often easy to identify, ratings may change based on circumstances. Reason Effect Requires running as a privileged context to execute the attack -1 Severity Vulnerability-specific details limit the impact of the issue -1 Severity Biometric authentication bypass that requires biometric information directly from the device owner -1 Severity Compiler or platform configurations mitigate a vulnerability in the source code Moderate Severity if the underlying vulnerability is Moderate or higher Requires physical access to device internals and is still possible if the device is off or hasn't been unlocked since being powered on -1 Severity Requires physical access to device internals while the device is on and has previously been unlocked -2 Severity A local attack that requires the bootloader chain to be unlocked No higher than Low A local attack that requires Developer Mode or any persistent developer mode settings to be currently enabled on the device and isn't a bug in Developer Mode itself.
No higher than Low If no SELinux domain can conduct the operation under the Google-provided SEPolicy Negligible Security Impact Local versus Proximal versus Remote A remote attack vector indicates that the bug can be exploited without installing an app or without physical access to a device. Network security Android assumes that all networks are hostile and could be injecting attacks or spying on traffic. Biometric authentication Biometric authentication is a challenging space, and even the best systems can be fooled by a near-match see Android Developers Blog: Lockscreen and authentication improvements in Android Receiving Android updates Updates to the Android system are generally delivered to devices through OTA update packages.
Updating Google services In addition to providing patches for security bugs, the Android security team reviews security bugs to determine if there are other ways to protect users. A restricted execution environment where only the most minimal of permissions are provided.
A typical execution environment expected by unprivileged code. Functionality that's part of the kernel, runs in the same CPU context as the kernel such as device drivers , has direct access to kernel memory such as hardware components on the device , has the capability to load scripts into a kernel component for example, eBPF , the communication processors, or is one of a handful of user services that is considered kernel equivalent: apexd , bpfloader , init , ueventd , and vold.
A component that is designed to be protected from even a hostile kernel for example, TrustZone and Hypervisor. An optional hardware component designed to be protected from all other components on the device and from physical attack, as defined in Introduction to Secure Elements.
Unauthorized access to data secured by the SE Arbitrary code execution in the TEE or SE Remote arbitrary code execution in a privileged context, the bootloader chain, or the TCB Remote persistent denial of service permanent or requiring reflashing the entire operating system or a factory reset Remote bypass of user interaction requirements on package installation or equivalent behavior Remote bypass of user interaction requirements for any developer, security, or privacy settings Remote secure boot bypass Bypass of mechanisms designed to prevent safety-related software or hardware components from malfunctioning for example, thermal protections Remote access to sensitive credentials used for remote service authentication For example, account passwords or bearer tokens.
Trusty TEE. Verified Boot. Best Practices. Published October 4, Updated November 15, The Android Security Bulletin contains details of security vulnerabilities affecting Android devices. 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.
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.
Android runtime The vulnerability in this section could enable a local attacker with physical access to the device to execute arbitrary code in order to gain access to additional permissions. System The 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.
How do I determine if my device is updated to address these issues? Alongside various fixes for issues and errors, this release comes with the December security patch, which will release for Pixel phones two weeks later. Also, you can follow us on Google News for regular updates.
James is the lead content creator on Sammy Fans and mostly works on Samsung's firmware section. His first phone was the Samsung Galaxy S4 and continue to get new S series devices.
Most of the time, James tries to learn about new technologies and gadgets but he also sneaks a bit of free time to nearby rivers and nature.
Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Later on, the handset had received the latest One UI 3.
Meanwhile, the Korean tech giant will offer new security updates as well for system security improvements. Abner Li.
Alongside the new phones , Google today is launching Android 12 for current Pixel devices. In addition to Material You, revamped Quick Settings, and a slew of other Android 12 additions, it features the October security patch. Kernel components The most severe vulnerability in this section could result in arbitrary kernel code execution due to a use after free.
How do I determine if my device is updated to address these issues? Security patch levels of or later address all issues associated with the security patch level. Security patch levels of or later address all issues associated with the security patch level and all previous patch levels. Device manufacturers that include these updates should set the patch string level to: [ro.
Why does this bulletin have two security patch levels? Devices that use the 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 or newer must include all applicable patches in this and previous security bulletins. What do the entries in the Type column mean? What do the entries in the References column mean? Versions Version Date Notes 1. A [ 2 ]. A Upstream kernel.
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