Nortel Business Communications Manager DNS Query Port Entropy Weakness Lets Remote Users Spoof the System
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SecurityTracker Alert ID: 1020802 |
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SecurityTracker URL: http://securitytracker.com/id/1020802
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CVE Reference:
CVE-2008-1447
(Links to External Site)
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Date: Sep 3 2008
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Impact:
Modification of system information
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Vendor Confirmed: Yes Exploit Included: Yes
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Version(s): 4.0
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Description:
A vulnerability was reported in Nortel Business Communications Manager. A remote user can spoof the system.
The domain name system (DNS) service does not use sufficiently random UDP sockets to process queries. A remote user can send specially crafted DNS queries and responses to the target service to spoof responses and insert records into the DNS cache. This may cause traffic to be redirected to arbitrary IP addresses specified by the remote user.
Some demonstration exploit code is available at:
http://www.caughq.org/exploits/CAU-EX-2008-0002.txt
http://www.caughq.org/exploits/CAU-EX-2008-0003.txt
Dan Kaminsky of IOActive reported this vulnerability.
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Impact:
A remote user can spoof the DNS service, causing traffic to be redirected to arbitrary hosts.
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Solution:
No solution was available at the time of this entry.
The vendor is working on a fix.
The vendor's advisory is available at:
http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=762152
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Vendor URL: support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=762152 (Links to External Site)
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Cause:
Randomization error
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Underlying OS:
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Message History:
None.
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Source Message Contents
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Date: Wed, 3 Sep 2008 00:04:56 -0400
Subject: Nortel Business Communication Manager
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http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=762152
CVE-2008-1447
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