CyberRota Analysis
AI-GeneratedCoreWCF versions prior to 1.9.1 are vulnerable to a security flaw in SPNEGO SecurityContextToken negotiation, which can allow an attacker to recover proof keys from RSTR messages. This vulnerability enables impersonation of authenticated Windows principals and the potential decryption or forgery of WS-SecureConversation traffic. Organizations using affected versions of CoreWCF in their Windows environments should prioritize upgrading to version 1.9.1 to mitigate this high-severity risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. In version 1.9.0, CoreWCF SPNEGO SecurityContextToken negotiation can expose the proof key recovered from the RSTR when TransportWithMessageCredential with Windows client credentials and session establishment are used, allowing an observer to impersonate the authenticated Windows principal and decrypt or forge WS-SecureConversation traffic. This issue is fixed in version 1.9.1.