Knowledge Base ISC Main Website Ask a Question/Contact ISC
CVE-2002-0400: DoS internal consistency check (DoS_findtype)
Author: Cathy Almond Reference Number: AA-00950 Views: 1745 Created: 2013-05-29 14:02 Last Updated: 2013-05-30 10:29 0 Rating/ Voters

A logic error can cause server failure, disabling name service.

Posting date: 
04 Jun 2002
Program Impacted: 
Versions affected: 
9.0 - 9.2.0


BIND 9 before 9.2.1 allows remote attackers to cause a denial of service (shutdown) via a malformed DNS packet that triggers an error condition that is not properly handled when the rdataset parameter to the dns_message_findtype() function in message.c is not NULL, aka DoS_findtype.



Active exploits:

None known at this time.


Upgrade to BIND 9.2.1 or later.

Related Documents:

See our BIND Security Matrix for a complete listing of Security Vulnerabilities and versions affected.

If you'd like more information on our Forum or product support please visit

Do you still have questions?  Questions regarding this advisory should go to

Note: ISC patches only currently supported versions. When possible we indicate EOL versions affected.

ISC Security Vulnerability Disclosure Policy:  Details of our current security advisory policy and practice can be found here:

This Knowledge Base article is the complete and official security advisory document.

Legal Disclaimer:
Internet Systems Consortium (ISC) is providing this notice on an "AS IS" basis. No warranty or guarantee of any kind is expressed in this notice and none should be implied. ISC expressly excludes and disclaims any warranties regarding this notice or materials referred to in this notice, including, without limitation, any implied warranty of merchantability, fitness for a particular purpose, absence of hidden defects, or of non-infringement. Your use or reliance on this notice or materials referred to in this notice is at your own risk. ISC may change this notice at any time.  A stand-alone copy or paraphrase of the text of this document that omits the document URL is an uncontrolled copy. Uncontrolled copies may lack important information, be out of date, or contain factual errors.

© 2001-2014 Internet Systems Consortium

  • Please help us to improve the content of our knowledge base by letting us know how we can improve this article or by submitting suggestions for other articles you'd like to see created. Information on how to obtain further help on our products or services can be found on our main website.' If you have a technical question or problem on which you'd like help, we recommend searching our community mailing list archives and/or posting your question there (you will need to register there first for your posts to be accepted). The bind-users and the dhcp-users lists particularly have a long-standing and active membership.
Info Submit Feedback on this Article
Nickname: Your Email: Subject: Comment:
Enter the code below:
Quick Jump Menu