Google releases July 2016 Android Security Bulletin and Nexus Images

Google has released the July 2016 Android Security Bulletin. Partners have had access to the warnings in this month’s bulletin since June 6, 2016 or earlier.

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.

Interestingly, this bulletin defines two security patch level strings to provide Android partners with the flexibility to move more quickly to fix a subset of vulnerabilities that are similar across all Android devices.

  • 2016-07-01: Partial security patch level string. This security patch level string indicates that all issues associated 2016-07-01 are addressed.
  • 2016-07-05: Complete security patch level string. This security patch level string indicates that all issues associated 2016-07-01 and 2016-07-05 are addressed.
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Alongside the bulletin, Google have released a security update to Nexus devices through an over-the-air (OTA) update. The Nexus firmware images have also been released to the Google Developer site. Source code patches for these issues will be released to the Android Open Source Project (AOSP) repository in the next 48 hours.

The table below contains a list of security vulnerabilities, the Common Vulnerability and Exposures ID (CVE), their assessed severity and whether or not Nexus 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 successfully bypassed.

Security patch levels of 2016-07-01 or later must address the following issues.
[table style=”table-striped”]

Issue CVE Severity Affects Nexus?
Remote code execution vulnerability in Mediaserver CVE-2016-2506, CVE-2016-2505, CVE-2016-2507, CVE-2016-2508, CVE-2016-3741, CVE-2016-3742, CVE-2016-3743 Critical Yes
Remote code execution vulnerability in OpenSSL & BoringSSL CVE-2016-2108 Critical Yes
Remote code execution vulnerability in Bluetooth CVE-2016-3744 High Yes
Elevation of privilege vulnerability in libpng CVE-2016-3751 High Yes
Elevation of privilege vulnerability in Mediaserver CVE-2016-3745, CVE-2016-3746, CVE-2016-3747 High Yes
Elevation of privilege vulnerability in sockets CVE-2016-3748 High Yes
Elevation of privilege vulnerability in LockSettingsService CVE-2016-3749 High Yes
Elevation of privilege vulnerability in Framework APIs CVE-2016-3750 High Yes
Elevation of privilege vulnerability in ChooserTarget service CVE-2016-3752 High Yes
Information disclosure vulnerability in Mediaserver CVE-2016-3753 High No*
Information disclosure vulnerability in OpenSSL CVE-2016-2107 High No*
Denial of service vulnerability in Mediaserver CVE-2016-3754, CVE-2016-3755, CVE-2016-3756 High Yes
Denial of service vulnerability in libc CVE-2016-3818 High No*
Elevation of privilege vulnerability in lsof CVE-2016-3757 Moderate Yes
Elevation of privilege vulnerability in DexClassLoader CVE-2016-3758 Moderate Yes
Elevation of privilege vulnerability in Framework APIs CVE-2016-3759 Moderate Yes
Elevation of privilege vulnerability in Bluetooth CVE-2016-3760 Moderate Yes
Elevation of privilege vulnerability in NFC CVE-2016-3761 Moderate Yes
Elevation of privilege vulnerability in sockets CVE-2016-3762 Moderate Yes
Information disclosure vulnerability in Proxy Auto-Config CVE-2016-3763 Moderate Yes
Information disclosure vulnerability in Mediaserver CVE-2016-3764, CVE-2016-3765 Moderate Yes
Denial of service vulnerability in Mediaserver CVE-2016-3766 Moderate Yes

[/table]

Security patch levels of 2016-07-05 or later must address all of the 2016-07-01 issues as well as the following issues.
[table style=”table-striped”]

Issue CVE Severity Affects Nexus?
Elevation of privilege vulnerability in Qualcomm GPU driver (Device specific) CVE-2016-2503, CVE-2016-2067 Critical Yes
Elevation of privilege vulnerability in MediaTek Wi-Fi driver (Device specific) CVE-2016-3767 Critical Yes
Elevation of privilege vulnerability in Qualcomm performance component (Device specific) CVE-2016-3768 Critical Yes
Elevation of privilege vulnerability in NVIDIA video driver (Device specific) CVE-2016-3769 Critical Yes
Elevation of privilege vulnerability in MediaTek drivers (Device specific) CVE-2016-3770, CVE-2016-3771, CVE-2016-3772, CVE-2016-3773, CVE-2016-3774 Critical Yes
Elevation of privilege vulnerability in kernel file system (Device specific) CVE-2016-3775 Critical Yes
Elevation of privilege vulnerability in USB driver (Device specific) CVE-2015-8816 Critical Yes
Elevation of privilege vulnerability in Qualcomm components (Device specific) CVE-2014-9794, CVE-2014-9795, CVE-2015-8892, CVE-2013-7457, CVE-2014-9781, CVE-2014-9786, CVE-2014-9788, CVE-2014-9779, CVE-2014-9780, CVE-2014-9789, CVE-2014-9793, CVE-2014-9782, CVE-2014-9783, CVE-2014-9785, CVE-2014-9787, CVE-2014-9784, CVE-2014-9777, CVE-2014-9778, CVE-2014-9790, CVE-2014-9792, CVE-2014-9797, CVE-2014-9791, CVE-2014-9796, CVE-2014-9800, CVE-2014-9799, CVE-2014-9801, CVE-2014-9802, CVE-2015-8891, CVE-2015-8888, CVE-2015-8889, CVE-2015-8890 High Yes
Elevation of privilege vulnerability in Qualcomm USB driver (Device specific) CVE-2016-2502 High Yes
Elevation of privilege vulnerability in Qualcomm Wi-Fi driver (Device specific) CVE-2016-3792 High Yes
Elevation of privilege vulnerability in Qualcomm camera driver (Device specific) CVE-2016-2501 High Yes
Elevation of privilege vulnerability in NVIDIA camera driver (Device specific) CVE-2016-3793, CVE-2016-3794 High Yes
Elevation of privilege vulnerability in MediaTek power driver (Device specific) CVE-2016-3795, CVE-2016-3796 High Yes
Elevation of privilege vulnerability in Qualcomm Wi-Fi driver (Device specific) CVE-2016-3797 High Yes
Elevation of privilege vulnerability in MediaTek hardware sensor driver (Device specific) CVE-2016-3798 High Yes
Elevation of privilege vulnerability in MediaTek video driver (Device specific) CVE-2016-3799, CVE-2016-3800 High Yes
Elevation of privilege vulnerability in MediaTek GPS driver (Device specific) CVE-2016-3801 High Yes
Elevation of privilege vulnerability in kernel file system (Device specific) CVE-2016-3802, CVE-2016-3803 High Yes
Elevation of privilege vulnerability in MediaTek power management driver (Device specific) CVE-2016-3804, CVE-2016-3805 High Yes
Elevation of privilege vulnerability in MediaTek display driver (Device specific) CVE-2016-3806 High Yes
Elevation of privilege vulnerability in serial peripheral interface driver (Device specific) CVE-2016-3807, CVE-2016-3808 High Yes
Elevation of privilege vulnerability in Qualcomm sound driver (Device specific) CVE-2016-2068 High Yes
Elevation of privilege vulnerability in kernel (Device specific) CVE-2014-9803 High Yes
Information disclosure vulnerability in networking component (Device specific) CVE-2016-3809 High Yes
Information disclosure vulnerability in MediaTek Wi-Fi driver (Device specific) CVE-2016-3810 High Yes
Elevation of privilege vulnerability in kernel video driver (Device specific) CVE-2016-3811 Moderate Yes
Information disclosure vulnerability in MediaTek video codec driver (Device specific) CVE-2016-3812 Moderate Yes
Information disclosure vulnerability in Qualcomm USB driver (Device specific) CVE-2016-3813 Moderate Yes
Information disclosure vulnerability in NVIDIA camera driver (Device specific) CVE-2016-3814, CVE-2016-3815 Moderate Yes
Information disclosure vulnerability in MediaTek display driver (Device specific) CVE-2016-3816 Moderate Yes
Information disclosure vulnerability in kernel teletype driver (Device specific) CVE-2016-0723 Moderate Yes
Denial of service vulnerability in Qualcomm bootloader (Device specific) CVE-2014-9798, CVE-2015-8893 Moderate Yes

[/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 July 2016 Android Security Bulletin is available here.