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Category:   Device (Router/Bridge/Hub)  >   Juniper Junos Vendors:   Juniper
Juniper JUNOS DNS Query Port Entropy Weakness Lets Remote Users Spoof the System
SecurityTracker Alert ID:  1020449
SecurityTracker URL:  http://securitytracker.com/id/1020449
CVE Reference:   CVE-2008-1447   (Links to External Site)
Date:  Jul 9 2008
Impact:   Modification of system information
Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in JUNOS. 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.

J-series routers running JUNOS Enhanced Services Software (junos-jsr) built prior to May 23, 2008 are affected.

Juniper switching products running JUNOS Enhanced Switching Software (junos-ex) built prior to May 23, 2008 are also affected.

Dan Kaminsky of IOActive reported this vulnerability.

Impact:   A remote user can spoof the DNS service, causing traffic to be redirected to arbitrary hosts.
Solution:   It is unclear if a fix is available or not.

The vendor's advisory is available at:

https://www.juniper.net/alerts/viewalert.jsp?actionBtn=Search&txtAlertNumber=PSN-2008-06-040&viewMode=view

Vendor URL:  www.juniper.net/alerts/viewalert.jsp?actionBtn=Search&txtAlertNumber=PSN-2008-06-040&viewMode=view (Links to External Site)
Cause:   Randomization error

Message History:   None.


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