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Advisories

TVU Networks Receiver/Transceiver Authentication Bypass via /tvu/Login

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severity
critical
date
Affecting

  • TVU Receiver / Transceiver < 7.9

CWE
  • CWE-288 Authentication Bypass Using an Alternate Path or Channel
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Dr. Henning Kopp of CODE WHITE
Description
TVU Networks Receiver/Transceiver devices running firmware before version 7.9 contain an authentication bypass vulnerability in the web management login endpoint POST /tvu/Login that allows remote unauthenticated attackers to obtain an administrative session by submitting an empty or absent UserName parameter. Attackers can send a crafted HTTP request directly, bypassing client-side JavaScript validation, to receive a valid session cookie regardless of the password value and gain full administrative control of the device's web management interface.

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