CVE-2024-21643
January 10, 2024
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.
Affected Packages
Microsoft.IdentityModel.Protocols.SignedHttpRequest (NUGET):
Affected version(s) Fix Suggestion:
Update to version 7.1.2Microsoft.IdentityModel.Protocols.SignedHttpRequest (NUGET):
Affected version(s) >=6.5.0 <6.34.0Fix Suggestion:
Update to version 6.34.0Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.6
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
LOW
Weakness Type (CWE)
Improper Control of Generation of Code ('Code Injection')
EPSS
Base Score:
0.63
