Vulnerability · Published Jan 10, 2024 · Assigned by GitHub_M

CVE-2024-21643Microsoft.IdentityModel.Protocols.SignedHttpRequest remote code execution vulnerability

High 7.1

In plain English

A high-severity code injection in azure-activedirectory-identitymodel-extensions-for-dotnet from AzureAD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.2% (higher than 83% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.1High

Exploit odds (30 days)2.2%top 17.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
NuGet	microsoft.identitymodel.protocols.signedhttprequest	6.34.0	GHSA-rv9j-c866-gp5h
NuGet	microsoft.identitymodel.protocols.signedhttprequest	7.1.2	GHSA-rv9j-c866-gp5h

Affected products (as reported)

Vendor	Product	Versions
AzureAD	azure-activedirectory-identitymodel-extensions-for-dotnet	< 6.34.0>= 7.0.0-preview, < 7.1.2

Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

In plain English

Official description

Affected packages & fixed versions

Affected products (as reported)

References