Google releases February 2019 Android Security Bulletin and Google Device Images

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Google has released the February 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

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.

  • 01-02-2019: Partial security patch level string. This security patch level string indicates that all issues associated with 01-02-2019 (and all previous security patch level strings) are addressed.
  • 05-02-2018: Complete security patch level string. This security patch level address all issues associated with the 05-02-2019 security patch level and all previous patch levels.

The most severe of these issues is a critical security vulnerability in Framework that could allow a remote attacker using a specially crafted PNG 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.

Google releases February 2019 Android Security Bulletin and Google Device Images

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 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.

  • 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

01-02-2019 security patch level—Vulnerability details

Framework

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

CVE References Type Severity Updated AOSP versions
CVE-2019-1986 A-117838472 RCE Critical 9
CVE-2019-1987 A-118143775 RCE Critical 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-1988 A-118372692 RCE Critical 8.0, 8.1, 9

Library

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-2017-17760 A-78029030 RCE High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2018-5268 A-78029634 RCE High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2018-5269 A-78029727 RCE High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2017-18009 A-78026242 ID Moderate 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 transmission to execute arbitrary code within the context of a privileged process.

CVE References Type Severity Updated AOSP versions
CVE-2019-1991 A-110166268 RCE Critical 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-1992 A-116222069 RCE Critical 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-1993 A-119819889 EoP High 8.0, 8.1, 9
CVE-2019-1994 A-117770924 EoP High 8.0, 8.1, 9
CVE-2019-1995 A-32589229 ID High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-1996 A-111451066 ID High 8.0, 8.1, 9
CVE-2019-1997 A-117508900 ID High 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9
CVE-2019-1998 A-116055338 DoS High 9

05-02-2019 security patch level—Vulnerability details

Kernel components

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 Component
CVE-2018-10879 A-116406063
Upstream kernel
EoP High ext4 filesystem
CVE-2019-1999 A-120025196 EoP High Binder driver
CVE-2019-2000 A-120025789 EoP High Binder driver
CVE-2019-2001 A-117422211 ID High iomem

NVIDIA components

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 a privileged process.

CVE References Type Severity Component
CVE-2018-6271 A-80198474 RCE Critical libnvomx
CVE-2018-6267 A-70857947 EoP High libnvomx
CVE-2018-6268 A-80433161 EoP High libnvomx
CVE-2016-6684 A-117423758 ID High kernel log

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-2018-11262 A-76424945
QC-CR#2221192
N/A Critical bootloader
CVE-2018-11280 A-109741776
QC-CR#2185061
N/A High Modem
CVE-2018-11275 A-74409078
QC-CR#2221256
N/A High Bootloader
CVE-2018-13900 A-119052051
QC-CR#2287499
N/A High Modem
CVE-2018-13905 A-119052050
QC-CR#2225202
N/A High Graphics

Qualcomm closed-source 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-2018-11289 A-109678453 N/A Critical Closed-source component
CVE-2018-11820 A-111089815 N/A Critical Closed-source component
CVE-2018-11938 A-112279482 N/A Critical Closed-source component
CVE-2018-11945 A-112278875 N/A Critical Closed-source component
CVE-2018-11268 A-109678259 N/A High Closed-source component
CVE-2018-11845 A-111088838 N/A High Closed-source component
CVE-2018-11864 A-111092944 N/A High Closed-source component
CVE-2018-11921 A-112278972 N/A High Closed-source component
CVE-2018-11931 A-112279521 N/A High Closed-source component
CVE-2018-11932 A-112279426 N/A High Closed-source component
CVE-2018-11935 A-112279483 N/A High Closed-source component
CVE-2018-11948 A-112279144 N/A High Closed-source component
CVE-2018-5839 A-112279544 N/A High Closed-source component
CVE-2018-13904 A-119050566 N/A High Closed-source component

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

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