CVE-2024-0022 - Local Information Disclosure Vulnerability in CompanionDeviceManagerService

A recently discovered vulnerability, CVE-2024-0022, affects the CompanionDeviceManagerService that operates within Android operating systems. This vulnerability exposes sensitive information due to improper input validation when launching NotificationAccessConfirmationActivity of another user profile. Exploitation can occur without any additional privileges, and user interaction is not necessary for a successful attack.

This article aims to provide an in-depth understanding of the CVE-2024-0022 vulnerability, including an overview of the affected code snippet, original references, and exploitation details. The potential impact of this vulnerability and steps to mitigate the risk are also discussed.

Vulnerability Details

CVE-2024-0022 affects multiple functions in CompanionDeviceManagerService.java, which is part of the Android framework. The vulnerability occurs due to incorrect input validation, allowing for unsanctioned access to NotificationAccessConfirmationActivity of another user profile. This can lead to local information disclosure, potentially exposing sensitive data and compromising privacy.

The vulnerability is particularly concerning as it does not require additional execution privileges. As a result, an attacker can exploit the vulnerability with ease, accessing user information without provoking suspicion.

The problematic code is present in the following functions within CompanionDeviceManagerService.java

private void launchConfirmationActivity(Context context,
                                       ComponentName activityToLaunch,
                                       ArrayList<AssociationRequest> requests) {
  ...
}

private void launchNotificationAccessConfirmationActivity(Context context,
                                                          ComponentName activityToLaunch,
                                                          String callingPackageName) {
  ...
}

In both of these functions, there is a lack of proper input validation for the provided activityToLaunch parameter. This can allow an attacker to launch NotificationAccessConfirmationActivity of another user profile without proper authorization.

Original References

This vulnerability was first disclosed by Android Open Source Project (AOSP) and has been assigned the following ID: ANDROID-162458602. Details about this vulnerability can be found at the AOSP security bulletin:

- AOSP Security Bulletin: https://source.android.com/security/bulletin/
- CVE-ID: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-0022

Exploit Details

Due to the flawed input validation, an attacker can exploit the vulnerability by injecting code to manipulate the activityToLaunch parameter in the respective functions. Since user interaction is not needed for exploitation, the attacker can stealthily gather sensitive information from other user profiles without leaving a trace.

Mitigation and Discussion

To mitigate the risk of CVE-2024-0022, it is essential to apply proper input validation checks within the affected CompanionDeviceManagerService.java functions. This will limit attackers' ability to manipulate the activityToLaunch parameter and prevent unauthorized access to user profiles.

Additionally, keeping on top of security updates and patching systems is a foundational component of cybersecurity practice. Users and administrators should ensure that Android devices stay up to date with the latest firmware and security patches provided by Google and device manufacturers.

Conclusion

CVE-2024-0022 is a critical vulnerability that poses a considerable risk to user privacy and sensitive data on Android devices. By understanding and addressing this vulnerability, users and developers can take necessary measures to prevent potential information theft and protect their privacy. Monitoring and applying Android security updates is always a critical component of a secure device ecosystem.

Timeline

Published on: 05/07/2024 21:15:08 UTC
Last modified on: 05/08/2024 13:15:00 UTC