Dnsmasq DNS Query Port Entropy Weakness Lets Remote Users Spoof the System
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SecurityTracker Alert ID: 1020651
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SecurityTracker URL: http://securitytracker.com/id?1020651
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CVE Reference: CVE-2008-1447
(Links to External Site)
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Date: Aug 12 2008
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Impact: Modification of system information
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Fix Available: Yes
Exploit Included: Yes
Vendor Confirmed: Yes
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Version(s): prior to 2.43
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Description: A vulnerability was reported in Dnsmasq. 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.
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: The vendor has issued a fixed version (2.43), available at:
http://www.thekelleys.org.uk/dnsmasq/
The vendor's advisory is available at:
http://www.thekelleys.org.uk/dnsmasq/CHANGELOG
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Vendor URL: www.thekelleys.org.uk/dnsmasq/doc.html (Links to External Site)
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Cause: Randomization error
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Underlying OS: Linux (Any), UNIX (Any)
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Date: Tue, 12 Aug 2008 02:27:46 -0400
Subject: Dnsmasq
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CVE-2008-1447
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