AT&T U-verse Arris NVG599 Firmware Vulnerability: Unauthorized Root Access via Caserver HTTPS Service

CVE-2017-14116 · HIGH Severity

AV:N/AC:M/AU:N/C:C/I:C/A:C

The AT&T U-verse 9.2.2h0d83 firmware for the Arris NVG599 device, when IP Passthrough mode is not used, configures WAN access to a caserver https service with the tech account and an empty password, which allows remote attackers to obtain root privileges by establishing a session on port 49955 and then installing new software, such as BusyBox with "nc -l" support.

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