CVE-2024-21643

Microsoft.IdentityModel.Protocols.SignedHttpRequest remote code execution vulnerability

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Las extensiones IdentityModel para .NET proporcionan ensamblados para desarrolladores web que deseen utilizar proveedores de identidad federados para establecer la identidad de la persona que llama. Cualquiera que aproveche el protocolo `SignedHttpRequest` o `SignedHttpRequestValidator` es vulnerable. Microsoft.IdentityModel confía en el reclamo `jku` de forma predeterminada para el protocolo `SignedHttpRequest`. Esto plantea la posibilidad de realizar cualquier solicitud `HTTP GET` remota o local. La vulnerabilidad se ha solucionado en Microsoft.IdentityModel.Protocols.SignedHttpRequest. Los usuarios deben actualizar todas sus versiones de Microsoft.IdentityModel a 7.1.2 (para 7x) o superior, 6.34.0 (para 6x) o superior.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

Low

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-12-29 CVE Reserved
2024-01-10 CVE Published
2024-08-01 CVE Updated
2024-11-16 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-94: Improper Control of Generation of Code ('Code Injection')

CAPEC

References (4)

URL	Tag	Source
https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases/tag/6.34.0	Release Notes
https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases/tag/7.1.2	Release Notes
https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/wiki/jkucve	Mitigation

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/security/advisories/GHSA-rv9j-c866-gp5h	2024-01-19

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Microsoft Search vendor "Microsoft"		Identitymodel Extensions Search vendor "Microsoft" for product "Identitymodel Extensions"				< 6.34.0 Search vendor "Microsoft" for product "Identitymodel Extensions" and version " < 6.34.0"		.net		Affected
Microsoft Search vendor "Microsoft"		Identitymodel Extensions Search vendor "Microsoft" for product "Identitymodel Extensions"				>= 7.0.0 < 7.1.2 Search vendor "Microsoft" for product "Identitymodel Extensions" and version " >= 7.0.0 < 7.1.2"		.net		Affected