CVE-2026-24902
HighSummary
TrustTunnel to otwartoźródłowy protokół VPN, który w wersjach przed 0.9.114 zawierał lukę typu server-side request forgery oraz możliwość obejścia ograniczeń sieci prywatnej. W pliku `tcp_forwarder.rs` ochrona SSRF była stosowana tylko w jednej ścieżce, co pozwalało na połączenia z lokalnymi i prywatnymi adresami IP bez odpowiednich sprawdzeń.
Risk Assessment
Organizacje mogą być narażone na ataki, które wykorzystują tę lukę do nieautoryzowanego dostępu do zasobów w sieci prywatnej. Potencjalne zagrożenie obejmuje możliwość dotarcia do wrażliwych danych lub usług, które powinny być chronione.
Recommendation
Zaleca się aktualizację TrustTunnel do wersji 0.9.114 lub nowszej, aby usunąć tę lukę. Dodatkowo, warto przeprowadzić audyt konfiguracji sieciowej w celu zminimalizowania ryzyka związanych z SSRF.
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Original NVD description (English source)
TrustTunnel is an open-source VPN protocol with a server-side request forgery and and private network restriction bypass in versions prior to 0.9.114. In `tcp_forwarder.rs`, SSRF protection for `allow_private_network_connections = false` was only applied in the `TcpDestination::HostName(peer)` path. The `TcpDestination::Address(peer) => peer` path proceeded to `TcpStream::connect()` without equivalent checks (for example `is_global_ip`, `is_loopback`), allowing loopback/private targets to be reached by supplying a numeric IP. The vulnerability is fixed in version 0.9.114.

