Vulnerability · Published Apr 16, 2024 · Assigned by GitHub_M
CVE-2024-27086MSAL.NET applications targeting Xamarin Android and .NET Android (MAUI) susceptible to local denial of service
Low 3.9
In plain English
A low-severity incorrect authorization in microsoft-authentication-library-for-dotnet from AzureAD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
The MSAL library enabled acquisition of security tokens to call protected APIs. MSAL.NET applications targeting Xamarin Android and .NET Android (e.g., MAUI) using the library from versions 4.48.0 to 4.60.0 are impacted by a low severity vulnerability. A malicious application running on a customer Android device can 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. MSAL.NET version 4.60.1 includes the fix. As a workaround, a developer may explicitly mark the MSAL.NET activity non-exported.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| NuGet | microsoft.identity.client | 4.59.1 | GHSA-x674-v45j-fwxw |
| NuGet | microsoft.identity.client | 4.60.3 | GHSA-x674-v45j-fwxw |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| AzureAD | microsoft-authentication-library-for-dotnet | >= 4.48.0, < 4.59.1>= 4.60.0, < 4.60.3 |
Weakness: CWE-926, CWE-863 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L