Google releases December 2016 Android Security Bulletin and Google Device Images

Google has released the December 2016 Android Security Bulletin. Partners have had access to the warnings in this month’s bulletin since November 07, 2016 or earlier.

The December 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.

2016-12-01: Partial security patch level string. This security patch level string indicates that all issues associated with 2016-12-01 (and all previous security patch level strings) are addressed.

2016-12-05: Complete security patch level string. This security patch level string indicates that all issues associated with 2016-12-01 and 2016-12-05 (and all previous security patch level strings) are addressed.

Supported Google devices will receive a single OTA update with the November 05, 2016 security patch level.

The most severe of these issues are Critical security vulnerabilities in device-specific code that could enable arbitrary code execution within the context of the kernel, leading to the possibility of a local permanent device compromise, which may require reflashing the operating system to repair the device.

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 December 05, 2016 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 2016-12-01 or later must address the following issues.
[table style=”table-striped”]

IssueCVESeverityAffects Google devices?
Remote code execution vulnerability in CURL/LIBCURLCVE-2016-5419, CVE-2016-5420, CVE-2016-5421HighYes
Elevation of privilege vulnerability in libziparchiveCVE-2016-6762HighYes
Denial of service vulnerability in TelephonyCVE-2016-6763HighYes
Denial of service vulnerability in MediaserverCVE-2016-6766, CVE-2016-6765, CVE-2016-6764, CVE-2016-6767HighYes
Remote Code Execution vulnerability in Framesequence libraryCVE-2016-6768HighYes
Elevation of privilege vulnerability in Smart LockCVE-2016-6769ModerateNo*
Elevation of privilege vulnerability in Framework APIsCVE-2016-6770ModerateYes
Elevation of privilege vulnerability in TelephonyCVE-2016-6771ModerateYes
Elevation of privilege vulnerability in Wi-FiCVE-2016-6772ModerateYes
Information disclosure vulnerability in MediaserverCVE-2016-6773ModerateYes
Information disclosure vulnerability in Package ManagerCVE-2016-6774ModerateYes

[/table]

Security patch levels of 2016-12-05 or later must address all of the 2016-11-01 issues, as well as the following issues.
[table style=”table-striped”]

IssueCVESeverityAffects Google devices?
Elevation of privilege vulnerability in kernel memory subsystemCVE-2016-4794, CVE-2016-5195CriticalYes
Elevation of privilege vulnerability in NVIDIA GPU driverCVE-2016-6775, CVE-2016-6776, CVE-2016-6777CriticalYes
Elevation of privilege vulnerability in kernelCVE-2015-8966CriticalNo*
Elevation of privilege vulnerability in NVIDIA video driverCVE-2016-6915, CVE-2016-6916, CVE-2016-6917CriticalYes
Elevation of privilege vulnerability in kernel ION driverCVE-2016-9120CriticalYes
Vulnerabilities in Qualcomm componentsCVE-2016-8411CriticalYes
Elevation of privilege vulnerability in kernel file systemCVE-2014-4014HighYes
Elevation of privilege vulnerability in kernelCVE-2015-8967HighYes
Elevation of privilege vulnerability in HTC sound codec driverCVE-2016-6778, CVE-2016-6779, CVE-2016-6780HighYes
Elevation of privilege vulnerability in MediaTek driverCVE-2016-6492, CVE-2016-6781, CVE-2016-6782, CVE-2016-6783, CVE-2016-6784, CVE-2016-6785HighNo*
Elevation of privilege vulnerability in Qualcomm media codecsCVE-2016-6761, CVE-2016-6760, CVE-2016-6759, CVE-2016-6758HighYes
Elevation of privilege vulnerability in Qualcomm camera driverCVE-2016-6755HighYes
Elevation of privilege vulnerability in kernel performance subsystemCVE-2016-6786, CVE-2016-6787HighYes
Elevation of privilege vulnerability in MediaTek I2C driverCVE-2016-6788HighNo*
Elevation of privilege vulnerability in NVIDIA libomx libraryCVE-2016-6789, CVE-2016-6790HighYes
Elevation of privilege vulnerability in Qualcomm sound driverCVE-2016-6791, CVE-2016-8391, CVE-2016-8392HighYes
Elevation of privilege vulnerability in kernel security subsystemCVE-2015-7872HighYes
Elevation of privilege vulnerability in Synaptics touchscreen driverCVE-2016-8393, CVE-2016-8394HighYes
Elevation of privilege vulnerability in Broadcom Wi-Fi driverCVE-2014-9909, CVE-2014-9910HighNo*
Information disclosure vulnerability in MediaTek video driverCVE-2016-8396HighNo*
Information disclosure vulnerability in NVIDIA video driverCVE-2016-8397HighYes
Denial of service vulnerability in GPSCVE-2016-5341HighYes
Denial of service vulnerability in NVIDIA camera driverCVE-2016-8395HighYes
Elevation of privilege vulnerability in kernel networking subsystemCVE-2016-8399ModerateYes
Information disclosure vulnerability in Qualcomm componentsCVE-2016-6756, CVE-2016-6757ModerateYes
Information disclosure vulnerability in NVIDIA librm libraryCVE-2016-8400ModerateYes
Information disclosure vulnerability in kernel componentsCVE-2016-8401, CVE-2016-8402, CVE-2016-8403, CVE-2016-8404, CVE-2016-8405, CVE-2016-8406, CVE-2016-8407ModerateYes
Information disclosure vulnerability in NVIDIA video driverCVE-2016-8408, CVE-2016-8409ModerateYes
Information disclosure vulnerability in Qualcomm sound driverCVE-2016-8410ModerateYes

[/table]

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 December 2016 Android Security Bulletin is available here.

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