CyberRota Analysis
AI-GeneratedCentrifugo versions prior to 6.9.0 are vulnerable to a critical authentication and authorization bypass due to improper handling of client-controlled headers, allowing remote clients to spoof trusted headers such as x-trusted-user. This vulnerability can lead to unauthorized access and manipulation of real-time messaging operations, posing significant risks to applications relying on Centrifugo for secure communication. Organizations using Centrifugo should prioritize upgrading to version 6.9.0 to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Centrifugo is an open-source scalable real-time messaging server. Prior to 6.9.0, Centrifugo copies the client-controlled protocol.ConnectRequest.headers map through OnClientConnecting in internal/client/handler.go, ConnectEvent.Headers, and SetEmulatedHeadersToContext. The requestHeaders path in internal/proxy/http.go, the requestMetadata path in internal/proxy/grpc.go, and the Consume path in internal/unigrpc/grpc.go can forward an allowlisted value as a trusted backend header or metadata value. A remote client can spoof a header such as x-trusted-user for connect, refresh, subscribe, publish, RPC, and related proxy calls when the backend relies on that header for authentication or authorization. The unidirectional gRPC transport has no transport-level HTTP header that can override the emulated value. This issue is fixed in version 6.9.0.