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Grafana Labs

Grafana memperbaiki kerentanan zero-day setelah eksploitasi tersebar di Twitter

December 8, 2021 by Eevee

Solusi analitik sumber terbuka dan visualisasi interaktif Grafana menerima pembaruan darurat hari ini untuk memperbaiki kerentanan zero-day yang memungkinkan akses jarak jauh ke file lokal.

Masalah ini mulai dipublikasikan awal minggu ini, sebelum Grafana Labs meluncurkan pembaruan untuk versi 8.0.0-beta1 yang terpengaruh hingga 8.3.0.

Sebelumnya, Grafana 8.3.1, 8.2.7, 8.1.8, dan 8.0.7 dirilis untuk memperbaiki kerentanan jalur traversal yang dapat memungkinkan penyerang untuk menavigasi di luar folder Grafana dan mengakses lokasi terbatas di server dari jarak jauh, seperti /etc/sandi/.

Grafana Labs menjelaskan bahwa masalahnya ada pada URL untuk plug-in yang diinstal, yang rentan terhadap serangan path traversal.

Karena semua instalasi Grafana memiliki satu set plugin yang diinstal secara default, jalur URL yang rentan ada di setiap instance aplikasi.

Namun laporan kedua menunjukkan bahwa informasi tentang masalah ini mulai menyebar, konfirmasi datang ketika berita tentang bug muncul di ruang publik.

Tidak butuh waktu lama untuk detail teknis bersama dengan proof-of-concepts (PoC) untuk mengeksploitasi bug agar tersedia di Twitter dan GitHub.

Sumber : Martin HSU

Karena bug yang dilaporkan secara pribadi telah menjadi zero-day yang bocor, Grafana Labs terpaksa menerbitkan perbaikannya:

  • 2021-12-06: Laporan kedua tentang kerentanan diterima
  • 2021-12-07: Kami menerima informasi bahwa kerentanan telah bocor ke publik, mengubahnya menjadi 0day
  • 2021-12-07: Keputusan dibuat untuk rilis secepat mungkin
  • 2021-12-07: Rilis pribadi dengan masa tenggang 2 jam yang dikurangi, bukan jangka waktu 1 minggu yang biasa
  • 2021-12-07: Rilis publik

Dilacak sebagai CVE-2021-43798, cacat tersebut menerima skor keparahan 7,5 dan masih dapat dieksploitasi di server lokal yang belum diperbarui.

Instance Grafana Cloud belum terpengaruh, kata pengembang hari ini.

Menurut laporan publik, ada ribuan server Grafana yang terekspos di internet publik. Jika memperbarui instance yang rentan tidak mungkin dilakukan secara tepat waktu, disarankan untuk membuat server tidak dapat diakses dari web publik.

Sumber : Bleeping Computer

Tagged With: Bug, CVE-2021-43798, GitHub, Grafana Labs, kerentanan, Twitter, URL, Zero Day

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