CVE-2022-20470: Privilege Escalation in com.android.server.appwidget.AppWidgetServiceImpl#bindRemoteViewsService
Summary
CVE-2022-20470: In bindRemoteViewsService of AppWidgetServiceImpl.java, there is a possible way to bypass background activity launch due to improper input validation. Affects platform/frameworks/base across 5 version ranges.
>= 10:0, < 10:2022-12-01
>= 11:0, < 11:2022-12-01
>= 12:0, < 12:2022-12-01
>= 12L:0, < 12L:2022-12-01
>= 13:0, < 13:2022-12-01
Fixed in 10:2022-12-01. How to fix ↓
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Background
The package under scrutiny is com.android.server.appwidget.AppWidgetServiceImpl, which is a component of the Android framework. This package is responsible for managing app widgets on the Android platform. App widgets are small applications that can be embedded within other applications or displayed on the user's home screen. They provide users with quick access to frequently used features or information. AppWidgetServiceImpl handles the binding of remote views services for app widgets. Remote views services allow app widgets to display dynamic content and interact with the user. This package is vulnerable to a privilege escalation issue in the bindRemoteViewsService method.
Vulnerability Detail
The vulnerability in com.android.server.appwidget.AppWidgetServiceImpl#bindRemoteViewsService allows for a bypass of background activity launch due to improper input validation. This can lead to local escalation of privilege without requiring additional execution privileges. Exploitation of this vulnerability does not require user interaction. The impact of this vulnerability is that an attacker with access to the affected device can potentially gain elevated privileges and perform unauthorized actions. The vulnerability affects Android versions 10, 11, 12, 12L, and 13.
How To Fix
Minimum fixed version
10:2022-12-01
This is the first release that contains the fix.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
In conclusion, the com.android.server.appwidget.AppWidgetServiceImpl package in the Android framework is vulnerable to a privilege escalation issue in the bindRemoteViewsService method. This vulnerability can be mitigated by updating the Android framework to a version that includes the fix. It is recommended to update to Android versions 10, 11, 12, 12L, or 13 to address this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is that an attacker with access to the affected device can potentially gain elevated privileges and perform unauthorized actions.
No, exploitation of this vulnerability does not require user interaction.
This vulnerability affects Android versions 10, 11, 12, 12L, and 13.
Yes, the fix for this vulnerability was implemented in the Android framework starting from version 10 (API level 29) and up to version 13 (API level 33). Updating the Android framework to a version that includes the fix will mitigate the privilege escalation vulnerability.
No specific workaround is mentioned for this vulnerability.
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