Privilege Context Switching Error Affecting duende.accesstokenmanagement.openidconnect package, versions [3.0.0,3.0.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DOTNET-DUENDEACCESSTOKENMANAGEMENTOPENIDCONNECT-8353098
- published8 Nov 2024
- disclosed7 Nov 2024
- creditNate Laff
Introduced: 7 Nov 2024
CVE-2024-51987 (opens in a new tab)How to fix?
Upgrade Duende.AccessTokenManagement.OpenIdConnect to version 3.0.1 or higher.
Overview
Duende.AccessTokenManagement.OpenIdConnect is a .NET library that manages OpenId Connect access tokens in ASP.NET Core applications.
Affected versions of this package are vulnerable to Privilege Context Switching Error due to the improper handling of token refresh in pooled HttpClient instances. An attacker can gain unauthorized access to another user's access token by exploiting the reuse of HttpClient instances across different users.
Workaround
This vulnerability can be mitigated by using the HttpConext.GetUserAccessTokenAsync extension method or the IUserTokenManagementService.GetAccessTokenAsync method instead of AddUserAccessTokenHttpClient.