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Vulnerability Twitter Hapus Kartu Kredit dari Semua Akun

Seperti sosial media lainnya, twitter membayar setiap individual yang dapat menemukan kelemahan pada layanan situs mereka dengan biaya sebesar $140 atau lebih untuk setiap kelemahan yang ditemukan di bawah program barunya Bug Bounty.

Seorang peneliti security dari Mesir Ahmed Mohamed Hassan Aboul-Ela yang telah banyak dihargai oleh perusahaan besar seperti google. Microsoft dan Apple, telah menemukan Vulnerability yang cukup serius dari layanan iklan twitter yang memungkinkan dia menghapus kartu kredit dari akun twitter.

Vulnerability yang pertama, Awalnya Abolul-Ela menemukan dua Vulnerability yang berbeda pada ads.twitter.com, namun kedua kelemahan tersebut memiliki dampak dan efek yang sama, kelemahan pertama berada pada fungsi delete kartu kredit dalam halaman metode pembayaran. https://ads.twitter.com/accounts/[account id]/payment_methods. Dengan memilih fungsi Delete this card, sebuah permintaan ajax POST request dikirim ke server. Parameter POST request yang dikirim adalah nama akun dan ID akun twitter. Respon halaman “403 forbidden” tetapi sebenarnya, kartu kredit telah terhapus dari akun twitter.

“Yang harus saya lakukan adalah mengubah dua parameter untuk ID akun twiiter dan kartu kredit saya yang lain, lalu membalas lagi request dan saya tiba-tiba menemukan kartu kredit telah terhapus dari akun twitter yang lainnya tanpa interaksi yang diperlukan.” Tulis Aboul-Ela.

Vulnerability yang kedua, Aboul menemukan kelemahan lain yang serupa pada ads.twitter.com, namun menurut dia dampak vulnerability ini lebih tinggi dari yang sebelumnya.

Ketika dia mencoba menambahkan kartu kredit yang tidak valid ke akun twitternya, ditampilkan pesan kesalahan “We were unable to approve the card you entered” dan menyediakan tombol “dismiss”, mengklik pada tombol, kartu kredit hilang dari akunnya.

“Saya pikir itu memiliki efek yang sama dari menghapus, jadi saya mencoba untuk menambahkan kartu kredit yang tidak valid lagi dan mencegat request” katanya.

Tidak seperti Vulnerability pertama, parameter akun tidak , hanya ID kartu kredit yang digunakan. Dia memodifikasi ID kartu kredit di URL dan body untuk ID kartu kredit dari akun twitter lain dan kemudian menjawab request tersebut.

Lalu apa yang terjadi? Coba tebak sendiri.


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