Zyxel Router Command Injection

critical Nessus Plugin ID 241345

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Synopsis

The router is affected by a command injection vulnerability.

Description

Firmware version of the Zyxel TCLinux device is affected by command injection vulnerability:

- The ZyXEL three router models - ZyXEL P660HN-T1A v1, ZyXEL P660HN-T1A v2 and Billion 5200W-T - router distributed by TrueOnline has a command injection vulnerability in the Remote System Log forwarding function, which is accessible by an unauthenticated user. The vulnerability is in the ViewLog.asp page and can be exploited through the remote_host parameter. (CVE-2017-18368)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

See Vendor Advisory.

Plugin Details

Severity: Critical

ID: 241345

File Name: zyxel_usg_CVE-2017-18368.nasl

Version: 1.2

Type: remote

Family: CGI abuses

Published: 7/4/2025

Updated: 7/4/2025

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2017-18368

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: x-cpe:/h:zyxel

Required KB Items: Settings/ParanoidReport, www/zyxel_router

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/18/2017

Vulnerability Publication Date: 12/26/2016

CISA Known Exploited Vulnerability Due Dates: 8/28/2023

Exploitable With

Metasploit (TrueOnline / ZyXEL P660HN-T v1 Router Unauthenticated Command Injection)

Reference Information

CVE: CVE-2017-18368

Detections

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