CVE-2019-25651
HighSummary
Ubiquiti UniFi Network Controller w wersjach przed 5.10.12 (z wyjątkiem 5.6.42) oraz oprogramowanie układowe UAP, USW i USG przed określonymi wersjami wykorzystują szyfrowanie AES-CBC do komunikacji między urządzeniami a kontrolerem. Szyfrowanie to zawiera słabości kryptograficzne, które umożliwiają atakującym odzyskanie kluczy szyfrujących z przechwyconego ruchu.
Risk Assessment
Atakujący z dostępem do sąsiedniej sieci mogą przechwycić wystarczającą ilość zaszyfrowanego ruchu i wykorzystać luki w trybie AES-CBC, co pozwala na nieautoryzowane przejęcie kontroli nad urządzeniami sieciowymi. To stwarza poważne zagrożenie dla bezpieczeństwa sieci organizacji.
Recommendation
Zaleca się aktualizację Ubiquiti UniFi Network Controller oraz oprogramowania układowego urządzeń do najnowszych wersji, aby usunąć znane słabości kryptograficzne. Dodatkowo, warto rozważyć wdrożenie dodatkowych środków zabezpieczających, takich jak segmentacja sieci.
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Original NVD description (English source)
Ubiquiti UniFi Network Controller prior to 5.10.12 (excluding 5.6.42), UAP FW prior to 4.0.6, UAP-AC, UAP-AC v2, and UAP-AC Outdoor FW prior to 3.8.17, USW FW prior to 4.0.6, USG FW prior to 4.4.34 uses AES-CBC encryption for device-to-controller communication, which contains cryptographic weaknesses that allow attackers to recover encryption keys from captured traffic. Attackers with adjacent network access can capture sufficient encrypted traffic and exploit AES-CBC mode vulnerabilities to derive the encryption keys, enabling unauthorized control and management of network devices.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS