Google releases August 2019 Android Security Bulletin and Google Device Images

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Google has released the August 2019 Android Security Bulletin, giving carriers and device makers a fresh set of patches to install.

Though Google puts out the Android security patches each month, the job of actually getting the fixes to end users falls on the telcos and/or device manufacturers themselves. Those partners vary in their ability to release the patches in a timely fashion.

15 issues are resolved in the August security patch dated August 1 2019, and 11 for August 5 2019. Vulnerabilities range from Moderate to Critical, with the most severe relating to the media framework and a remote attacker possibly executing arbitrary code through a crafted file.

The August 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.

  • 01-08-2019: Partial security patch level string. This security patch level string indicates that all issues associated with 01-08-2019 (and all previous security patch level strings) are addressed.
  • 05-08-2018: Complete security patch level string. This security patch level address all issues associated with the 05-08-2019 security patch level and all previous patch levels.

The most severe of these issues is a critical security vulnerability in the System component that could enable a remote attacker using a specially crafted PAC 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 August 5, 2019 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 Mitigation’s

This is a summary of the mitigation’s 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.

 
august 2019 android update - coinbase - Google releases August 2019 Android Security Bulletin and Google Device Images
  • 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.

Terminology

You will find different types of vulnerabilities listed. Possible types include:

  • RCE—Remote code execution
  • EoP—Elevation of privilege
  • ID—Information disclosure
  • DoS—Denial of service

01-08-2019 security patch level—Vulnerability details

Android runtime

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

CVE References Type Severity Updated AOSP versions
CVE-2019-2120 A-130821293 EoP High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9

Framework

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

CVE References Type Severity Updated AOSP versions
CVE-2019-2121 A-131105245 EoP High 9
CVE-2019-2122 A-127605586 EoP High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-2125 A-132275252 EoP Moderate 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9

Media framework

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

CVE References Type Severity Updated AOSP versions
CVE-2019-2126 A-127702368 RCE High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-2128 A-132647222 EoP High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-2129 A-124781927 ID High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9

System

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

CVE References Type Severity Updated AOSP versions
CVE-2019-2130 A-132073833 RCE Critical 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-2131 A-119115683 EoP High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-2132 A-130568701 EoP High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-2133 A-132082342 EoP High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-2134 A-132083376 EoP High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-2135 A-125900276 ID High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-2136 A-132650049 ID High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-2137 A-132438333 DoS High 9

 

05-08-2019 security patch level—Vulnerability details

Media framework

The vulnerability in this section could enable a local attacker to execute arbitrary code within the context of a privileged process.

CVE References Type Severity Updated AOSP versions
CVE-2019-2127 A-124899895 EoP High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9

Broadcom components

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.

CVE References Type Severity Component
CVE-2019-11516 A-132966035 RCE Critical Bluetooth

Qualcomm components

These vulnerabilities affect Qualcomm components and are described in further detail in the appropriate Qualcomm security bulletin or security alert. The severity assessment of these issues is provided directly by Qualcomm.

CVE References Type Severity Component
CVE-2019-10492 A-132170519
QC-CR#2389432
N/A Critical HLOS
CVE-2019-10509 A-132171185
QC-CR#2359039
N/A High BTHOST
CVE-2019-10510 A-132173563
QC-CR#2305025
N/A High BTHOST
CVE-2019-10499 A-134440231
QC-CR#2398099
N/A High MProc
CVE-2019-10538 A-132193791
QC-CR#2448763
N/A High WLAN

Qualcomm closed-source components

These vulnerabilities affect Qualcomm closed-source components and are described in further detail in the appropriate Qualcomm security bulletin or security alert. The severity assessment of these issues is provided directly by Qualcomm.

CVE References Type Severity Component
CVE-2019-10539 A-135126805 N/A Critical Closed-source component
CVE-2019-10540 A-135126805 N/A Critical Closed-source component
CVE-2019-10489 A-132108754 N/A High Closed-source component
CVE-2019-2294 A-132108952 N/A High Closed-source component

 

Full details of the August 2019 Android Security Bulletin are available here.

Rapid John has a quarter of a century in programming for Government and Corporate bodies and is proficient in most major programming languages.  He is constantly running around showing us his latest bit of code and telling us how fantastic it is. (John we know).

He is responsible for carrying out presentations to corporate and business customers and is a BlackBerry Elite.

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