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Category:   Application (Generic)  >   BIND Vendors:   ISC (Internet Software Consortium)
(NetBSD Issues Fix) ISC BIND Response Policy Zones DNAME/CNAME Processing Flaw Lets Remote Users Deny Service
SecurityTracker Alert ID:  1025850
SecurityTracker URL:  http://securitytracker.com/id/1025850
CVE Reference:   CVE-2011-2465   (Links to External Site)
Date:  Jul 27 2011
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 9.8.0, 9.8.0-P1, 9.8.0-P2, 9.8.1b1
Description:   A vulnerability was reported in ISC BIND. A remote user can cause denial of service conditions.

A remote user can send specially crafted data to cause the target 'named' service to exit.

Servers that have recursion enabled and that use Response Policy Zones (RPZ) where the RPZ zone contains a specific rule/action pattern are affected. RPZ zones containing DNAME records and certain kinds of CNAME records are affected.

Bryce Moore from TELUS Security Labs reported this vulnerability.

Impact:   A remote user can cause the target DNS server to exit.
Solution:   NetBSD has issued a fix.

The NetBSD advisory is available at:

http://ftp.NetBSD.org/pub/NetBSD/security/advisories/NetBSD-SA2011-006.txt.asc

Vendor URL:  www.isc.org/software/bind/advisories/cve-2011-2465 (Links to External Site)
Cause:   State error
Underlying OS:  UNIX (NetBSD)
Underlying OS Comments:  4.0, 5.0, 5.1

Message History:   This archive entry is a follow-up to the message listed below.
Jul 5 2011 ISC BIND Response Policy Zones DNAME/CNAME Processing Flaw Lets Remote Users Deny Service



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