MSAL.NET applications targeting Xamarin Android and .NET Android (MAUI) susceptible to local denial of service
[!IMPORTANT] ONLY applications targeting Xamarin Android and .NET Android (MAUI) are impacted. All others can safely dismiss this CVE.
Impact
MSAL.NET applications targeting Xamarin Android and .NET Android (e.g., MAUI) using the library from versions 4.48.0 to 4.60.3 (inclusive, except 4.59.1 and 4.60.3) are impacted by a low severity vulnerability.
A malicious application running on a customer Android device can (1) inject HTML/JavaScript in an embedded web view exported by affected applications, or (2) cause local denial of service against applications that were built using MSAL.NET for authentication on the same device (i.e., prevent the user of the legitimate application from logging in) due to incorrect activity export configuration.
Patches
MSAL.NET version 4.60.3 includes the fix. We recommend all users of MSAL.NET that are building public client applications for Android update to the latest version.
Workarounds
We recommend developers update to the latest version of MSAL.NET. If that is not possible, a developer may explicitly mark the MSAL.NET activity non-exported:
<activity android:name="microsoft.identity.client.AuthenticationAgentActivity" android:configChanges="orientation|screenSize" android:exported="false">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="msalYOUR_CLIENT_ID" android:host="auth" />
</intent-filter>
</activity>References
Refer to MSAL.NET documentation for latest guidance and best practices on configuring client applications using the library.
Software afectado
Haz clic en una tecnología para ver todas sus vulnerabilidades.
| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| .NET (NuGet) | Microsoft.Identity.Client | >= 4.48.0, < 4.59.1, >= 4.60.0, < 4.60.3 | 4.59.1, 4.60.3 |
Referencias
- https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/security/advisories/GHSA-x674-v45j-fwxw
- https://nvd.nist.gov/vuln/detail/CVE-2024-27086
- https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/commit/413e319472ccf48c86647f19fa2aa49ff6038488
- https://github.com/AzureAD/microsoft-authentication-library-for-dotnet
- https://learn.microsoft.com/en-us/entra/msal/dotnet
- https://www.nuget.org/packages/Microsoft.Identity.Client
- Vector CVSS
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L- Debilidad (CWE)
CWE-863, CWE-926- Plataforma
- .NET (NuGet)
- Paquete
Microsoft.Identity.Client- Publicada
- 16.04.2024
- Actualizado
- 11.10.2026 11:23
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-x674-v45j-fwxw - CC BY 4.0
Historial de vulnerabilidades: Microsoft.Identity.Client
Todas las vulnerabilidades publicadas de este paquete (.NET (NuGet)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 2
- Primera → última
- 04.2024 06.2024
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Media 1
- Baja 1
Divulgaciones por año
- 2024: 2
- 2025: 0
- 2026: 0
-
MSAL.NET applications targeting Xamarin Android and .NET Android (MAUI) susceptible to local denial of service esta entrada
Identifica las vulnerabilidades de tu aplicación
Con la integración de DockRay y el inventario de software activado, DockRay compara las versiones notificadas de los componentes con las vulnerabilidades conocidas y avisa de las coincidencias confirmadas. La cobertura depende de la tecnología compatible y de los avisos disponibles.