CVE-2025-5344 Overview
CVE-2025-5344 affects Bluebird Android-based devices that ship with a pre-loaded kiosk application. The application exposes an unsecured Android Interface Definition Language (AIDL) service named com.bluebird.kiosk.launcher.IpartnerKioskRemoteService. A local attacker with code execution on the device can bind to this service and invoke privileged operations without authentication. The exposed methods allow modification of global system settings and the device wallpaper image. The flaw is tracked under CWE-926: Improper Export of Android Application Components and affects all firmware versions before 1.1.2.
Critical Impact
Any local application installed on a vulnerable Bluebird device can bind to the exported kiosk service and alter system-wide configuration without holding privileged permissions.
Affected Products
- Bluebird mobile devices running the pre-loaded kiosk launcher application
- All firmware/application versions prior to 1.1.2
- The com.bluebird.kiosk.launcher package exposing IpartnerKioskRemoteService
Discovery Timeline
- 2025-07-17 - CVE-2025-5344 published to the National Vulnerability Database
- 2026-06-17 - Last updated in the NVD database
Technical Details for CVE-2025-5344
Vulnerability Analysis
The kiosk launcher application registers an AIDL-backed remote service that other processes on the device can bind to over Android's Binder inter-process communication channel. The service is declared in a way that does not enforce a signature-level permission, custom permission check, or caller identity validation. As a result, any installed application or local shell process can connect to the service. Once bound, the caller can invoke remote methods that change global device settings and replace the wallpaper image. The vulnerability falls under improper export of Android application components.
Root Cause
The root cause is the export of com.bluebird.kiosk.launcher.IpartnerKioskRemoteService without restrictive android:permission enforcement in the application manifest. AIDL methods operate on behalf of the kiosk launcher, which holds elevated privileges to manipulate device-wide configuration. Binder transactions reach those privileged code paths without verifying the caller's UID, package signature, or required permission. This is a classic confused deputy pattern in which a privileged component performs actions requested by an unprivileged caller.
Attack Vector
Exploitation requires local access in the form of an application installed on the device or shell-level access. The attacker constructs an Intent targeting the kiosk service component and calls bindService() to obtain a proxy to the remote interface. Through the returned AIDL stub, the attacker invokes the methods that modify Settings.Global values and the system wallpaper. No user interaction or additional privileges are required. See the CERT Poland CVE-2025-5344 advisory for the disclosure details.
Detection Methods for CVE-2025-5344
Indicators of Compromise
- Unexpected changes to Android global settings values on managed Bluebird devices, such as modifications to network, accessibility, or developer settings.
- Wallpaper image replacement that did not originate from administrator policy or end-user action.
- Installed third-party packages that declare bindService calls targeting com.bluebird.kiosk.launcher.
Detection Strategies
- Inventory installed packages on Bluebird fleet devices and flag any that reference the com.bluebird.kiosk.launcher.IpartnerKioskRemoteService component.
- Use mobile device management (MDM) telemetry to track the kiosk launcher version and alert when devices run versions earlier than 1.1.2.
- Review application manifests for components binding to the exposed AIDL interface during application vetting.
Monitoring Recommendations
- Monitor MDM logs for unexplained shifts in global settings or wallpaper state across the device fleet.
- Audit sideloaded application installs on kiosk devices, since exploitation requires a local attacker process.
- Correlate device configuration drift with recent package installations to identify potentially malicious callers.
How to Mitigate CVE-2025-5344
Immediate Actions Required
- Update the Bluebird kiosk launcher application to version 1.1.2 or later on every affected device.
- Restrict installation of unsigned or untrusted applications on Bluebird devices through MDM policy.
- Audit existing devices for unexpected packages that may already be invoking the vulnerable service.
Patch Information
The vendor addresses the issue in kiosk launcher version 1.1.2. The fix is described in the CERT Poland advisory for CVE-2025-5344, which coordinated the disclosure. Administrators should confirm that the updated package is deployed across all Bluebird endpoints and verify the version through device management tooling.
Workarounds
- Enforce strict application allow-listing on Bluebird devices to block any package that is not approved by the administrator.
- Disable installation from unknown sources and sideloading via Android Debug Bridge (ADB) on production devices.
- Operate devices in a locked-down kiosk profile that prevents end users from installing additional applications until the patch is applied.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
