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Category:   Application (Generic)  >   BIND Vendors:   ISC (Internet Software Consortium)
BIND DNSSEC Validation Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1017573
SecurityTracker URL:  http://securitytracker.com/id/1017573
CVE Reference:   CVE-2007-0494   (Links to External Site)
Updated:  Jan 31 2007
Original Entry Date:  Jan 30 2007
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 9.0.x, 9.1.x, 9.2.0 - 9.2.7, 9.3.0 - 9.3.3, 9.4.x prior to 9.4.0rc2
Description:   A vulnerability was reported in BIND. A remote user can cause denial of service conditions.

A remote user can send specially crafted data to cause the target service to crash. A type * (ANY) DNS query that results in a response with multiple RRsets can trigger this flaw in the DNSSEC validation code.

The following versions are affected:

BIND 9.0.x
BIND 9.1.x
BIND 9.2.0, 9.2.1, 9.2.2, 9.2.3, 9.2.4, 9.2.5, 9.2.6, 9.2.7
BIND 9.3.0, 9.3.1, 9.3.2, 9.3.3
BIND 9.4.0a1, 9.4.0a2, 9.4.0a3, 9.4.0a4, 9.4.0a5, 9.4.0a6, 9.4.0b1, 9.4.0b2, 9.4.0b3, 9.4.0b4, 9.4.0rc1
BIND 9.5.0a1 (Bind Forum only)

Impact:   A remote user can cause the target name service to crash.
Solution:   The vendor has issued fixed versions (9.2.8, 9.3.4, and 9.4.0rc2).

The fix will be included in the upcoming BIND 9.5.0a2 release.

[Editor's note: This solution also addresses a separate BIND vulnerability that was previously reported in Alert ID 1017561.]

Vendor URL:  www.isc.org/ (Links to External Site)
Cause:   State error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Feb 6 2007 (Red Hat Issues Fix) BIND DNSSEC Validation Bug Lets Remote Users Deny Service
Red Hat has released a fix for Red Hat Enterprise Linux 2.1, 3, and 4.
Feb 12 2007 (FreeBSD Issues Fix) BIND DNSSEC Validation Bug Lets Remote Users Deny Service
FreeBSD has released a fix for named(8).
Mar 9 2007 (NetBSD Issues Fix) BIND DNSSEC Validation Bug Lets Remote Users Deny Service
NetBSD has released a fix.
Mar 14 2007 (Red Hat Issues Fix) BIND DNSSEC Validation Bug Lets Remote Users Deny Service
Red Hat has released a fix for Red Hat Enterprise Linux 5.
Apr 16 2007 (HP Issues Fix for Tru64 UNIX) BIND DNSSEC Validation Bug Lets Remote Users Deny Service
HP has issued a fix for HP Tru64 UNXI 4.0F PK8, 4.0G PK4, 5.1A PK6, 5.1B-3, and 5.1B-4.
May 24 2007 (Apple Issues Fix) BIND DNSSEC Validation Bug Lets Remote Users Deny Service
Apple has released a fix for Mac OS X.
May 31 2007 (IBM Issues Fix for AIX) BIND DNSSEC Validation Bug Lets Remote Users Deny Service
IBM has issued a fix for AIX 5.2 and 5.3.
Jun 12 2007 (HP Issues Fix for HP-UX) BIND DNSSEC Validation Bug Lets Remote Users Deny Service
HP has issued a fix for BIND on HP-UX 11.11 and 11.23.
Jun 18 2007 (Solaris Issues Fix) BIND DNSSEC Validation Bug Lets Remote Users Deny Service
Sun has issued a fix for Solaris 10.
Jan 29 2016 (HP Issues Fix for OpenVMS) BIND DNSSEC Validation Bug Lets Remote Users Deny Service
HP has issued a fix for OpenVMS.



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