Vulnerability Description
IdentityModel Extensions for .NET provide assemblies for web developers that wish to use federated identity providers for establishing the caller's identity. Anyone leveraging the `SignedHttpRequest`protocol or the `SignedHttpRequestValidator`is vulnerable. Microsoft.IdentityModel trusts the `jku`claim by default for the `SignedHttpRequest`protocol. This raises the possibility to make any remote or local `HTTP GET` request. The vulnerability has been fixed in Microsoft.IdentityModel.Protocols.SignedHttpRequest. Users should update all their Microsoft.IdentityModel versions to 7.1.2 (for 7x) or higher, 6.34.0 (for 6x) or higher.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Identitymodel Extensions | < 6.34.0 |
Related Weaknesses (CWE)
References
- https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-doRelease Notes
- https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-doRelease Notes
- https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-doVendor Advisory
- https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-doMitigationThird Party Advisory
- https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-doRelease Notes
- https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-doRelease Notes
- https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-doVendor Advisory
- https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-doMitigationThird Party Advisory
FAQ
What is CVE-2024-21643?
CVE-2024-21643 is a vulnerability with a CVSS score of 7.1 (HIGH). IdentityModel Extensions for .NET provide assemblies for web developers that wish to use federated identity providers for establishing the caller's identity. Anyone leveraging the `SignedHttpRequest`p...
How severe is CVE-2024-21643?
CVE-2024-21643 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-21643?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Identitymodel Extensions.