Google releases February 2017 Android Security Bulletin and Google Device Images

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Google has released the February 2017 Android Security Bulletin. Partners have had access to the warnings in this month’s bulletin since January 3, 2017 or earlier.

The February 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.

2017-02-01: Partial security patch level string. This security patch level string indicates that all issues associated with 2017-02-01 (and all previous security patch level strings) are addressed.

2017-02-05: Complete security patch level string. This security patch level string indicates that all issues associated with 2017-02-01 and 2017-02-05 (and all previous security patch level strings) are addressed.

Supported Google devices will receive a single OTA update with the February 05, 2017 security patch level

The most severe of these issues is a Critical security vulnerability that could enable remote code execution on an affected device through multiple methods such as email, web browsing, and MMS when processing media files.

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 February 05, 2017 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.

Security patch levels of 2017-02-01 or later must address the following issues.

IssueCVESeverityAffects Google devices?
Remote code execution vulnerability in SurfaceflingerCVE-2017-0405CriticalYes
Remote code execution vulnerability in MediaserverCVE-2017-0406, CVE-2017-0407CriticalYes
Remote code execution vulnerability in libgdxCVE-2017-0408HighYes
Remote code execution vulnerability in libstagefrightCVE-2017-0409HighYes
Elevation of privilege vulnerability in Java.NetCVE-2016-5552HighYes
Elevation of privilege vulnerability in Framework APIsCVE-2017-0410, CVE-2017-0411, CVE-2017-0412HighYes
Elevation of privilege vulnerability in MediaserverCVE-2017-0415HighYes
Elevation of privilege vulnerability in AudioserverCVE-2017-0416, CVE-2017-0417, CVE-2017-0418, CVE-2017-0419HighYes
Information disclosure vulnerability in AOSP MailCVE-2017-0420HighYes
Information disclosure vulnerability in AOSP MessagingCVE-2017-0413, CVE-2017-0414HighYes
Information disclosure vulnerability in Framework APIsCVE-2017-0421HighYes
Denial of service vulnerability in Bionic DNSCVE-2017-0422HighYes
Elevation of privilege vulnerability in BluetoothCVE-2017-0423ModerateYes
Information disclosure vulnerability in AOSP MessagingCVE-2017-0424ModerateYes
Information disclosure vulnerability in AudioserverCVE-2017-0425ModerateYes
Information disclosure vulnerability in FilesystemCVE-2017-0426ModerateYes

 

Security patch levels of 2017-02-05 or later must address all of the 2017-01-01 issues, as well as the following issues.

IssueCVESeverityAffects Google devices?
Remote code execution vulnerability in Qualcomm crypto driverCVE-2016-8418CriticalNo*
Elevation of privilege vulnerability in kernel file systemCVE-2017-0427CriticalYes
Elevation of privilege vulnerability in NVIDIA GPU driverCVE-2017-0428, CVE-2017-0429CriticalYes
Elevation of privilege vulnerability in kernel networking subsystemCVE-2014-9914CriticalYes
Elevation of privilege vulnerability in Broadcom Wi-Fi driverCVE-2017-0430CriticalYes
Vulnerabilities in Qualcomm componentsCVE-2017-0431CriticalNo*
Elevation of privilege vulnerability in MediaTek driverCVE-2017-0432HighNo*
Elevation of privilege vulnerability in Synaptics touchscreen driverCVE-2017-0433, CVE-2017-0434HighYes
Elevation of privilege vulnerability in Qualcomm Secure Execution Environment Communicator driverCVE-2016-8480HighYes
Elevation of privilege vulnerability in Qualcomm sound driverCVE-2016-8481, CVE-2017-0435, CVE-2017-0436HighYes
Elevation of privilege vulnerability in Qualcomm Wi-Fi driverCVE-2017-0437, CVE-2017-0438, CVE-2017-0439, CVE-2016-8419, CVE-2016-8420, CVE-2016-8421, CVE-2017-0440, CVE-2017-0441, CVE-2017-0442, CVE-2017-0443, CVE-2016-8476HighYes
Elevation of privilege vulnerability in Realtek sound driverCVE-2017-0444HighYes
Elevation of privilege vulnerability in HTC touchscreen driverCVE-2017-0445, CVE-2017-0446, CVE-2017-0447HighYes
Information disclosure vulnerability in NVIDIA video driverCVE-2017-0448HighYes
Elevation of privilege vulnerability in Broadcom Wi-Fi driverCVE-2017-0449ModerateYes
Elevation of privilege vulnerability in AudioserverCVE-2017-0450ModerateYes
Elevation of privilege vulnerability in kernel file systemCVE-2016-10044ModerateYes
Information disclosure vulnerability in Qualcomm Secure Execution Environment CommunicatorCVE-2016-8414ModerateYes
Information disclosure vulnerability in Qualcomm sound driverCVE-2017-0451ModerateYes

 

Android and Google Service Mitigations

This is a summary of the mitigations provided by the Android security platform and service protections, such as SafetyNet. 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 with Verify Apps and SafetyNet, which are designed to warn users about Potentially Harmful Applications. Verify Apps is enabled by default on devices with Google Mobile Services and is especially important for users who install applications from outside of Google Play. Device rooting tools are prohibited within Google Play, but Verify Apps warns users when they attempt to install a detected rooting application—no matter where it comes from. Additionally, Verify Apps attempts to identify and block installation of known malicious applications that exploit a privilege escalation vulnerability. If such an application has already been installed, Verify Apps will notify the user and attempt to remove the detected application.
  • As appropriate, Google Hangouts and Messenger applications do not automatically pass media to processes such as Mediaserver.

Full details of the February 2017 Android Security Bulletin is available here.

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