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Virgin Media

Alamt IP Pengguna VPN terekspos oleh kerentanan zero-day di router Virgin Media

September 21, 2021 by Winnie the Pooh

Kerentanan zero-day di router Virgin Media Super Hub 3 memungkinkan penyerang membuka kedok alamat IP pengguna VPN yang sebenarnya, ungkap peneliti keamanan.

Fidus Information Security, konsultan penetration testing Inggris, telah menerbitkan rincian kerentanan keamanan hampir dua tahun setelah pertama kali memperingatkan Virgin Media, sebuah perusahaan telekomunikasi Inggris, yang merujuk Fidus ke Liberty Global, perusahaan induknya.

Tim R&D Fidus mengatakan awalnya menunda pengungkapan selama 12 bulan atas permintaan vendor, tetapi upaya selanjutnya untuk menghubungi Virgin Media dan Liberty Global kemudian gagal mendapatkan tanggapan.

Namun, Virgin Media telah mengatakan kepada The Daily Swig bahwa saat ini sedang mengerjakan “perbaikan teknis” untuk “masalah edge-case, yang berpotensi berdampak hanya pada sebagian kecil pelanggan” yang menggunakan VPN.

Para peneliti dapat memasang serangan rebinding DNS yang mengungkapkan alamat IP pengguna VPN “dengan hanya [pengguna] mengunjungi halaman web [berbahaya] selama beberapa detik”, tulis posting blog yang dirancang oleh Fidus pada bulan Maret tetapi akhirnya diterbitkan minggu lalu.

Serangan rebinding DNS menyalahgunakan browser korban dengan menjadikannya sebagai proxy untuk menyerang jaringan pribadi.

Para peneliti berhasil menghilangkan anonimitas perangkat yang alamat IP-nya ditutupi oleh sebagian besar “VPN terkemuka di pasar”, kata tim R&D Fidus kepada The Daily Swig.

Namun, beberapa penyedia VPN menangkis serangan tersebut dengan memblokir akses ke alamat IP lokal secara default.

Selengkapnya: Portswigger

Tagged With: Cybersecurity, Virgin Media, VPN, Zero Day

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