title: Nortel Application Gateway 2000 Password Disclosure Vulnerability program: Nortel Application Gateway 2000
vulnerable version: 6.3.1 and prior homepage: http://www.nortel.com/ag2000 found: 2008-11-14 by: David Matscheko / SEC Consult / www.sec-consult.com link: https://www.sec-consult.com/files/20090415-1_nortel_AG_password_disclosure.txt ==========================================================================
The Application Gateway delivers practical, converged voice and data applications on Nortel IP phones that enable organizations to benefit more fully from IP telephony. The prepackaged, easy-to-learn, easy-to-use Voice Office applications help increase productivity and enhance organizational communications - without requiring any integration work. For the hospitality sector, the Guest Services applications provide additional services/features, generate revenue from advertising on the phone screen, and reduce the cost of operations by enabling guests to self serve. Custom development tools are also available to end customers for delivery of customized content to IP phones.
The Nortel Application Gateway provides an administration interface "Nortel Administration Tool powered by Citrix". This interface responds with sensitive information to unauthorized users.
The "Nortel Administration Tool powered by Citrix" can be accessed under the URL "https://<server>:3001/". The subframe "https://<server>:3001/adminDownloads.htm" does not show any content in the browser view. However the HTML-source of this frame contains sensitive information like an administrative call server user account:
<div id="call_server_host" value="10.11.12.13"></div> [...] <div id="call_server_telnet_port" value="23"></div> [...] <div id="call_server_user" value="admin123"></div> <div id="call_server_pwd" value="hugo123"></div>
This vulnerability can be exploited with a web browser and plugins / web proxy.
January 2009: Vendor informed about vulnerability 2009-04-14: Patch available
The vendor has released a vulnerability fix which addresses the issue. In addition, the vendor has released a public security advisory containing update instructions. URL:
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EOF SEC Consult Vulnerability Lab / @2009