PT-2024-18993 · Microsoft · Microsoft.Identitymodel

Brentschmaltz + 1 · Published 2024-01-09 · Updated 2024-01-19 · CVE-2024-21643

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

Name of the Vulnerable Software and Affected Versions Microsoft.IdentityModel versions prior to 6.34.0 Microsoft.IdentityModel versions prior to 7.1.2

Description The issue affects IdentityModel Extensions for .NET, which provide assemblies for web developers 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, allowing the possibility to make any remote or local HTTP GET request.

Recommendations For Microsoft.IdentityModel versions prior to 6.34.0, update to 6.34.0 or higher. For Microsoft.IdentityModel versions prior to 7.1.2, update to 7.1.2 or higher.

Exploit

Fix

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2024-21643

GHSA-RV9J-C866-GP5H

Affected Products

Microsoft.Identitymodel

References · 13

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/21xxx/CVE-2024-21643.json · Exploit
• 🔥 https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/wiki/jkucve · Exploit
• https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/security/advisories/GHSA-rv9j-c866-gp5h · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-21643 · Security Note
• https://osv.dev/vulnerability/CVE-2024-21643 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-rv9j-c866-gp5h · Vendor Advisory
• https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases/tag/7.1.2 · Note
• https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet · Note
• https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases/tag/6.34.0 · Note
• https://t.me/cvenotify/66871 · Telegram Post
• https://t.me/cvenotify/68096 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1744972537212121302 · Twitter Post
• https://twitter.com/CVEnew/status/1744936909288149105 · Twitter Post