User Impersonation Affecting cie.aspnetcore.authentication package, versions [,2.1.0)
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-CIEASPNETCOREAUTHENTICATION-8732923
- published19 Feb 2025
- disclosed18 Feb 2025
- creditAbdel Adim, Paolo Cavaglià, fromveeko
Introduced: 18 Feb 2025
CVE-2025-24895 (opens in a new tab)How to fix?
Upgrade CIE.AspNetCore.Authentication to version 2.1.0 or higher.
Overview
Affected versions of this package are vulnerable to User Impersonation due to improper validation of SAML response signatures which allows an attacker to inject a malicious, signed XML element as the first signature, bypassing proper verification and enabling impersonation of any SPID or CIE user.