ZTE ZXV10 W300 router contains hardcoded credentials

Overview

ZTE ZXV10 W300 router version 2.1.0, and possibly earlier versions, contains hardcoded credentials. (CWE-798)

Description

ZTE ZXV10 W300 router contains hardcoded credentials that are useable for the telnet service on the device. The username is “admin” and the password is “XXXXairocon” where “XXXX” is the last four characters of the device’s MAC address. The MAC address is obtainable over SNMP with community string public.

The vendor has provided a statement about this vulnerability.

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Impact

A remote unauthenticated attacker may be able to obtain the MAC address of the device and log into the telnet service of the device with hardcoded credentials.

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Solution

We are currently unaware of a practical solution to this problem. Please consider the following workaround.

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Restrict Access

Enable firewall rules so the telnet service of the device is not accessible to untrusted sources. Enable firewall rules that block SNMP on the device.

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Vendor Information

228886

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ZTE Corporation __ Affected

Notified: December 03, 2013 Updated: March 14, 2014

Status

Affected

Vendor Statement

'According to the vulnerability found in ZTE ZXV10 W300 router version 2.1.0, a mitigation measure has been adopted in the W300 general frame structure versions after 2011, which means the ZTE ZXV10 W300 router produced since 2011 has closed the telnet default function to avoid the information security

incident caused by such vulnerability. If any customer has a special requirement, please follow the instructions in our product manual to open the telnet function, but ZTE will not bear the legal liability for any security incident loss that might be the consequence of this operation. If you have any questions please contact us by calling our 24h service hotline +86-755-26770188.’

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

CVSS Metrics

Group	Score	Vector
Base	9.3	AV:N/AC:M/Au:N/C:C/I:C/A:C
Temporal	7.2	E:POC/RL:W/RC:UC
Environmental	5.4	CDP:ND/TD:M/CR:ND/IR:ND/AR:ND

References

• <http://cwe.mitre.org/data/definitions/798.html&gt;
• <http://wwwen.zte.com.cn/en/products/access/cpe/201302/t20130204_386351.html&gt;

Acknowledgements

Thanks to Cesar Neira for reporting this vulnerability.

This document was written by Jared Allar.

Other Information

CVE IDs:	CVE-2014-0329
Date Public:	2014-02-03 Date First Published: