RCE in Azuread Azure-Activedirectory-Identitymodel-Extensions-For-Dotnet
CVE-2024-21643
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.
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.022 (80.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L.
Affected products
- Azuread Azure-activedirectory-identitymodel-extensions-for-dotnet — versions < 6.34.0, >= 7.0.0-preview, < 7.1.2
- Microsoft Identitymodel_extensions
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC, Mitigation)
Frequently asked questions
- What is CVE-2024-21643?
- CVE-2024-21643 is a high-severity vulnerability in Azuread Azure-Activedirectory-Identitymodel-Extensions-For-Dotnet, classified under Code Injection. CVSS score: 7.1/10. Published 2024-01-10.
- How severe is CVE-2024-21643?
- High severity. CVSS v3 base score is 7.1 out of 10.