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Eclypsium

Gigabyte Systems Mengalami Kerentanan Firmware Kritis yang Membahayakan Jutaan Perangkat

June 1, 2023 by Eevee

Pada April 2023, peneliti keamanan cyber menemukan perilaku mencurigakan dalam sistem Gigabyte yang memungkinkan perangkat-perangkatnya terinfeksi oleh eksekutor Windows melalui firmware UEFI. Eksekutor tersebut dapat mengunduh pembaruan dalam format yang tidak aman.

Eclypsium, perusahaan keamanan firmware, berhasil mendeteksi anomali ini dan menginformasikan masalah ini kepada Gigabyte, yang telah mengakui dan menangani masalah tersebut.

John Loucaides, wakil presiden senior strategi di Eclypsium, menjelaskan bahwa sebagian besar firmware Gigabyte mengandung eksekutor biner Windows Native yang tertanam di dalam firmware UEFI. Eksekutor tersebut akan dieksekusi saat perangkat dinyalakan, mirip dengan serangan agen ganda LoJack. Melalui metode yang tidak aman, eksekutor ini dapat mengunduh dan menjalankan biner tambahan.

Eclypsium juga menemukan bahwa aplikasi berbasis .NET yang ada dalam firmware tersebut dapat mengunduh dan menjalankan pembaruan dari server Gigabyte melalui protokol HTTP biasa. Hal ini membuka kemungkinan serangan oleh pihak yang tidak bertanggung jawab melalui router yang terinfeksi.

Kerentanan ini dapat mempengaruhi sekitar 7 juta perangkat Gigabyte, dengan sekitar 364 sistem terkena dampak secara kasar. Ancaman ini serius karena malware yang disisipkan dalam firmware dapat bertahan bahkan jika perangkat dihapus dan sistem operasi diinstal ulang.

Untuk melindungi diri, disarankan agar pengguna menerapkan pembaruan firmware terbaru dan memeriksa fitur “APP Center Download & Install” dalam Pengaturan UEFI/BIOS untuk menonaktifkannya. Selain itu, pengguna juga disarankan untuk mengatur kata sandi BIOS guna mencegah perubahan yang tidak sah.

Sumber: The Hackernews

Tagged With: Eclypsium, eksekutor Windows, firmware UEFI, Gigabyte, keamanan perangkat, serangan cyber

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