CVE-2024-27086 – microsoft.identity.client

Package

Manager: nuget
Name: microsoft.identity.client
Vulnerable Version: >=4.48.0 <4.59.1 || >=4.60.0 <4.60.3

Severity

Level: Low

CVSS v3.1: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

EPSS: 0.00053 pctl0.16095

Details

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](https://www.nuget.org/packages/Microsoft.Identity.Client/) 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: ```xml <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](https://learn.microsoft.com/entra/msal/dotnet/) for latest guidance and best practices on configuring client applications using the library.

Metadata

Created: 2024-04-16T21:41:57Z
Modified: 2024-04-23T20:42:11Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/04/GHSA-x674-v45j-fwxw/GHSA-x674-v45j-fwxw.json
CWE IDs: ["CWE-863", "CWE-926"]
Alternative ID: GHSA-x674-v45j-fwxw
Finding: F014
Auto approve: 1