NetCommWireless NB604N ADSL2+ Wireless N300 Modem Router contains a stored cross-site scripting vulnerability

Overview

NetCommWireless NB604N ADSL2+ Wireless N300 Modem Router contains a stored cross-site scripting (XSS) vulnerability.

Description

CWE-79: Improper Neutralization of Input During Web Page Generation (‘Cross-site Scripting’)

NetCommWireless NB604N ADSL2+ Wireless N300 Modem Routers running software version GAN5.CZ56T-B-NC.AU-R4B010.EN contain a stored cross-site scripting (XSS) vulnerability. A remote attacker can perform a stored cross-site scripting (XSS) attack against an authenticated user through the web interface by manipulating single quotes in the WPA key variable (wlWpaPsk). The Wireless -> Security page (wlsecurity.html) contains an unsanitized parameter wlWpaPsk which, when submitted, is stored as the Javascript variable wpaPskKey.

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Impact

A remote attacker can perform a stored cross-site scripting (XSS) attack against an authenticated user through the web interface allowing them to run scripts with the permission of the authenticated user.

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Solution

Apply an Update
NetCommWireless has provided an updated firmware version, GAN5.CZ56T-B-NC.AU-R4B030.EN, for download on their support site.

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Vendor Information

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NetComm Wireless Limited Affected

Notified: September 05, 2014 Updated: October 06, 2014

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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

CVSS Metrics

Group	Score	Vector
Base	3.5	AV:N/AC:M/Au:S/C:P/I:N/A:N
Temporal	3.1	E:POC/RL:U/RC:ND
Environmental	2.3	CDP:ND/TD:M/CR:ND/IR:ND/AR:ND

References

• <http://cwe.mitre.org/data/definitions/79.html&gt;
• <http://support.netcommwireless.com/product/adsl/nb604n&gt;

Acknowledgements

Thanks to Katie Duczmal for reporting this vulnerability.

This document was written by Chris King.

Other Information

CVE IDs:	CVE-2014-4871
Date Public:	2014-10-06 Date First Published: