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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2009.0441 -- [Win] NuPoint Messenger server: Access Confidential Data 7 May 2009 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: NuPoint Messenger server Publisher: US-CERT Operating System: Windows Impact: Access Confidential Data Access: Remote/Unauthenticated Original Bulletin: http://www.kb.cert.org/vuls/id/576996 - --------------------------BEGIN INCLUDED TEXT-------------------- Vulnerability Note VU#576996 NuPoint Messenger server transmits authentication credentials in plain text Overview NuPoint Messenger is a unified communications product that connects to a Microsoft Exchange server. When communicating with the mail server the NuPoint Messenger server transmits Exchange usernames and passwords in cleartext. I. Description The NuPoint Messenger server can connect to a Microsoft Exchange server via the IMAP or MAPI protocols. During the authentication process, the NuPoint server will send user domain authentication credentials in cleartext to the Exchange server. Older versions of the NuPoint Messenger product may transmit the NuPoint server's root password without encryption instead of individual usernames and passwords. Administrators are encouraged review the "NuPoint communication with MS Exchange" document for more information. II. Impact An attacker with access to network data may be able to obtain domain (Exchange) usernames and passwords. III. Solution There is no solution to this issue. Administrators are encourgaed to review the below workarounds to mitigate the impact of this vulnerability. Encrypt connections between NuPoint and Exchange Servers * If the MAPI protocol is enabled, connections from the NuPoint server will be encrypted. * Using IPSec or some other VPN technology to encrypt the connection between the NuPoint and Exchange server will mitigate this vulnerability. Restrict access The NuPoint Messenger server should not use IMAP to connect to remote Exchange servers. If IMAP is enabled, the NuPoint server should be directly connected to the same isolated network as the Exchange server that it is communicating with. Systems Affected Vendor Status Date Notified Date Updated Mitel Networks, Inc. Vulnerable 2009-04-30 2009-05-05 References http://www.mitel.com/resources/NuPoint_and_Exchange.pdf http://en.wikipedia.org/w/index.php?title=Messaging_Application_Programming_Interface&oldid=276195526 Credit Simon Laurin of Simon Laurin Services-Conseils inc. reported this issue and provided valuable feedback. Mitel provided technical information that was used in this report. This document was written by Ryan Giobbi. Other Information Date Public: 2008-12-04 Date First Published: 2009-05-06 Date Last Updated: 2009-05-06 CERT Advisory: CVE-ID(s): NVD-ID(s): US-CERT Technical Alerts: Metric: 1.80 Document Revision: 23 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iD8DBQFKAiJ1NVH5XJJInbgRAi3iAJ4qcxMXpNu7jK87eBBXbeOEjl8mvACfRtdb Xl5/DmKfchjyyhQCdDKICVg= =oB64 -----END PGP SIGNATURE-----