Google has released the July 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.
Google patched 33 security vulnerabilities in the Android system, framework, library, media framework, Qualcomm components, and Qualcomm closed-source components, all of them addressed in the 2019-07-01 and 2019-07-05 security patch levels.
While the CVE-2019-2106, CVE-2019-2107, and CVE-2019-2109 critical RCE flaws impact all Android 7.0 or later devices with Android 9.0 not being affected by the latter, the fourth CVE-2019-2111 security issue present in the Android system affects only devices running Android 9.0.
The rest of the 33 vulnerabilities patched in this security update are either elevation of privilege flaws, can lead to information disclosure, or haven’t yet been classified, and users should be safe against potential attacks after applying the latest Android security patch.
The July 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.
- 01-07-2019: Partial security patch level string. This security patch level string indicates that all issues associated with 01-07-2019 (and all previous security patch level strings) are addressed.
- 05-07-2018: Complete security patch level string. This security patch level address all issues associated with the 05-07-2019 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 July 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
01-07-2019 security patch level—Vulnerability details
Framework
The 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-2019-2104 | A-131356202 | ID | High | 8.0, 8.1, 9 |
Library
The 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-2019-2105 | A-116114182 | RCE | High | 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 a privileged process.
| CVE | References | Type | Severity | Updated AOSP versions |
|---|---|---|---|---|
| CVE-2019-2106 | A-130023983 | RCE | Critical | 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9 |
| CVE-2019-2107 | A-130024844 | RCE | Critical | 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9 |
| CVE-2019-2109 | A-130651570 | RCE | Critical | 7.0, 7.1.1, 7.1.2, 8.0, 8.1 |
System
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 | Updated AOSP versions |
|---|---|---|---|---|
| CVE-2019-2111 | A-122856181 | RCE | Critical | 9 |
| CVE-2019-2112 | A-117997080 | EoP | High | 8.0, 8.1, 9 |
| CVE-2019-2113 | A-122597079 | EoP | High | 9 |
| CVE-2019-2116 | A-117105007 | ID | High | 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9 |
| CVE-2019-2117 | A-124107808 | ID | High | 7.0, 7.1.1, 7.1.2, 8.0, 8.1, 9 |
| CVE-2019-2118 | A-130161842 | ID | High | 8.0, 8.1, 9 |
| CVE-2019-2119 | A-131622568 | ID | High | 8.0, 8.1, 9 |
05-06-2019 security patch level—Vulnerability details
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-2019-2308 | A-129852114 QC-CR#2338800 |
N/A | Critical | DSP_Services |
| CVE-2019-2330 | A-129850940 QC-CR#2379952 |
N/A | Critical | Kernel |
| CVE-2019-2276 | A-130890737 QC-CR#2335974 |
N/A | High | WLAN HOST |
| CVE-2019-2305 | A-78530292 QC-CR#2253984 |
N/A | High | WLAN Driver |
| CVE-2019-2278 | A-130567114 QC-CR#2345293 |
N/A | High | HLOS |
| CVE-2019-2307 | A-129850941 QC-CR#2337425 |
N/A | High | WLAN HOST |
| CVE-2019-2326 | A-129850483 QC-CR#2372306 |
N/A | High | Audio |
| CVE-2019-2328 | A-129851238 QC-CR#2375115 |
N/A | High | Audio |
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-2019-2254 | A-122473972 | N/A | Critical | Closed-source component |
| CVE-2019-2322 | A-129766496 | N/A | Critical | Closed-source component |
| CVE-2019-2327 | A-129766125 | N/A | Critical | Closed-source component |
| CVE-2019-2235 | A-122473271 | N/A | High | Closed-source component |
| CVE-2019-2236 | A-122474808 | N/A | High | Closed-source component |
| CVE-2019-2237 | A-122472479 | N/A | High | Closed-source component |
| CVE-2019-2238 | A-122473168 | N/A | High | Closed-source component |
| CVE-2019-2239 | A-122473304 | N/A | High | Closed-source component |
| CVE-2019-2240 | A-122473496 | N/A | High | Closed-source component |
| CVE-2019-2241 | A-122473989 | N/A | High | Closed-source component |
| CVE-2019-2253 | A-129766432 | N/A | High | Closed-source component |
| CVE-2019-2334 | A-129766099 | N/A | High | Closed-source component |
| CVE-2019-2346 | A-129766299 | N/A | High | Closed-source component |
Full details of the July 2019 Android Security Bulletin are available here.
