Google releases May 2018 Android Security Bulletin and Google Device Images

Google has released the May 2018 Android Security Bulletin. Partners have had access to the warnings in this month’s bulletin for at least a month.

The May 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.

2018-05-01: Partial security patch level string. This security patch level string indicates that all issues associated with 2018-05-01 (and all previous security patch level strings) are addressed. 2018-05-05: Complete security patch level string. This security patch level address all issues associated with the 2018-05-05 security patch level and all previous patch levels.

The most severe of these issues is a critical security vulnerability in Media framework that could enable a remote attacker using a specially crafted file 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 May 5, 2018 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 Mitigations

This is a summary of the mitigations 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. 2018-05-01 security patch level—Vulnerability details Android runtime

The most severe vulnerability in this section could enable a remote attacker to access data normally accessible only to locally installed applications with permissions.

CVE References Type Severity Updated AOSP versions CVE-2017-13309 A-73251618 ID High 8.1 Framework

The most severe vulnerability in this section could enable a local malicious application to bypass user interaction requirements in order to gain access to additional permissions.

CVE References Type Severity Updated AOSP versions CVE-2017-13310 A-71992105 EoP High 6.0, 6.0.1, 7.0, 7.1.1, 7.1.2, 8.0, 8.1 CVE-2017-13311 A-73252178 EoP High 7.0, 7.1.1, 7.1.2, 8.0, 8.1 Media framework

The most severe vulnerability in this section could enable a local malicious application to bypass user interaction requirements in order to gain access to additional permissions.

CVE References Type Severity Updated AOSP versions CVE-2017-13312 A-73085795 EoP High 8.0 CVE-2017-13313 A-74114680 DoS High 6.0, 6.0.1, 7.0, 7.1.1, 7.1.2, 8.0, 8.1 System

The most severe vulnerability in this section could enable a local malicious application to bypass user interaction requirements in order to gain access to additional permissions.

CVE References Type Severity Updated AOSP versions CVE-2017-13314 A-63000005 EoP High 7.0, 7.1.1, 7.1.2, 8.0, 8.1 CVE-2017-13315 A-70721937 EoP High 6.0, 6.0.1, 7.0, 7.1.1, 7.1.2, 8.0, 8.1 2018-05-05 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.

CVE References Type Severity Component CVE-2017-16643 A-69916367 Upstream kernel ID High USB driver CVE-2017-5754 A-69856074 ID High Memory mapping NVIDIA components

The most severe vulnerability in this section could enable a local malicious application to execute arbitrary code within the context of the TEE.

CVE References Type Severity Component CVE-2017-6289 A-72830049 EoP Critical TEE CVE-2017-5715 A-71686116 ID High TLK CVE-2017-6293 A-69377364 EoP High NVIDIA Tegra X1 TZ Qualcomm components

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

CVE References Type Severity Component CVE-2018-3580 A-72957507 QC-CR#2149187 RCE Critical WLAN CVE-2018-5841 A-72957293 QC-CR#2073502 EoP High DCC CVE-2018-5850 A-72957135 QC-CR#2141458 EoP High WLAN CVE-2018-5846 A-71501683 QC-CR#2120063 EoP High Radio internet packet accelerator CVE-2018-5845 A-71501680 QC-CR#2119081 EoP High GPU CVE-2018-5840 A-71501678 QC-CR#2052024 EoP High GPU CVE-2017-18154 A-62872238 QC-CR#2109325 EoP High Libgralloc CVE-2018-3578 A-72956999 QC-CR#2145573 EoP High WLAN CVE-2018-3565 A-72957234 QC-CR#2138555 EoP High WLAN CVE-2017-13077 A-77481464 EoP High WLAN CVE-2018-3562 A-72957526 QC-CR#2147955 DoS High WLAN

 

Full details of the April 2018 Android Security Bulletin are available here.