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Videoconferencing

Data Microsoft Teams Seluruh Perusahaan Anda Bisa Dicuri Menggunakan ‘Evil GIF’

April 28, 2020 by Winnie the Pooh

Zoom bukan satu-satu nya platform yang rentan dari segi keamanan. Sebagaimana dibuktikan oleh kelemahan yang ditemukan dalam platform kolaborasi dan videoconferencing Microsoft Teams, seperti yang diungkapkan pada hari Senin.

Setidaknya selama tiga minggu dari akhir Februari hingga pertengahan Maret, GIF berbahaya bisa saja mencuri data pengguna dari akun Microsoft Teams, mungkin di seluruh perusahaan, dan mengambil kendali “seluruh daftar akun Teams di suatu organisasi,” peneliti keamanan cyber telah memperingatkan.

Kerentanan tersebut telah diperbaiki pada 20 April, artinya pengguna sekarang aman dari serangan ini. Tetapi ini menunjukkan bahwa bukan hanya Zoom yang rentan terhadap kerentanan yang dapat menempatkan pengguna dalam risiko. Alat konferensi video lain yang telah menjadi sangat populer di kalangan populasi dalam lockdown COVID-19 dapat dan akan ditargetkan juga.

Kerentanan mempengaruhi setiap versi Microsoft Teams untuk desktop dan web browser. Masalahnya terletak pada cara Microsoft menangani token otentikasi untuk melihat gambar dalam Teams. Token tersebut ditangani oleh Microsoft di servernya yang terletak di teams.microsoft.com atau subdomain apa pun di bawah alamat itu. CyberArk menemukan bahwa mungkin untuk membajak dua subdomain itu – aadsync-test.teams.microsoft.com dan data-dev.teams.microsoft.com – sebagai bagian dari serangan.

Mereka menemukan bahwa jika seorang peretas dapat memaksa target untuk mengunjungi subdomain yang dibajak, token otentikasi dapat diteruskan ke server penyerang. Mereka kemudian dapat membuat token lain – “skype” token – yang memberi mereka akses untuk mencuri data akun Teams korban.

Baca berita selengkapnya pada tautan di bawah ini:
Source: Forbes

Tagged With: Cybersecurity, Microsoft, Microsoft Teams, Security, Videoconferencing

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