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You are here: Home / News / Bug di Perangkat Lunak WinRAR Populer Dapat Membiarkan Penyerang Meretas Komputer Anda

Bug di Perangkat Lunak WinRAR Populer Dapat Membiarkan Penyerang Meretas Komputer Anda

October 22, 2021 by Winnie the Pooh

Kelemahan keamanan baru telah diungkapkan dalam utilitas pengarsipan file trialware WinRAR untuk Windows yang dapat disalahgunakan oleh penyerang jarak jauh untuk mengeksekusi kode berbahaya pada sistem yang ditargetkan, menggarisbawahi bagaimana kerentanan dalam perangkat lunak tersebut dapat menjadi pintu gerbang untuk serangkaian daftar serangan.

Dilacak sebagai CVE-2021-35052, bug berdampak pada versi trial perangkat lunak yang menjalankan versi 5.70. “Kerentanan ini memungkinkan penyerang untuk mencegat dan memodifikasi permintaan yang dikirim ke pengguna aplikasi,” kata Igor Sak-Sakovskiy dari Positive Technologies dalam sebuah laporan. “Ini dapat digunakan untuk mencapai eksekusi kode jarak jauh (RCE) di komputer korban.”

Sak-Sakovskiy mencatat bahwa penyelidikan ke WinRAR dimulai setelah mengamati kesalahan JavaScript yang diberikan oleh MSHTML (alias Trident), mesin browser berpemilik untuk Internet Explorer yang sekarang telah berhenti di support dan yang digunakan di Office untuk merender konten web di dalam Word, Excel, dan PowerPoint dokumen, yang mengarah pada penemuan bahwa jendela kesalahan ditampilkan sekali setiap tiga kali saat aplikasi diluncurkan setelah masa uji coba berakhir.

Dengan mencegat kode respons yang dikirim ketika WinRAR memberi tahu pengguna tentang akhir periode uji coba gratis melalui “notifier.rarlab[.]com” dan memodifikasinya menjadi pesan pengalihan “301 Dipindahkan Secara Permanen”, Positive Technologies menemukan bahwa kode tersebut dapat disalahgunakan untuk men-cache pengalihan ke domain berbahaya yang dikendalikan penyerang untuk semua permintaan berikutnya.

Selain itu, penyerang yang sudah memiliki akses ke domain jaringan yang sama dapat melakukan serangan spoofing ARP untuk meluncurkan aplikasi dari jarak jauh, mengambil informasi host lokal, dan bahkan menjalankan kode berbahaya.

Selengkapnya: The Hacker News

Tagged With: Cybersecurity, RCE, Vulnerability, WinRAR

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